diff --git a/code/modules/tgs/core/_definitions.dm b/code/modules/tgs/core/_definitions.dm
index ebf6d17c..e8a041cd 100644
--- a/code/modules/tgs/core/_definitions.dm
+++ b/code/modules/tgs/core/_definitions.dm
@@ -1,2 +1,10 @@
-#define TGS_UNIMPLEMENTED "___unimplemented"
-#define TGS_VERSION_PARAMETER "server_service_version"
+#if DM_VERSION < 510
+#error The TGS DMAPI does not support BYOND versions < 510!
+#endif
+
+#define TGS_UNIMPLEMENTED "___unimplemented"
+#define TGS_VERSION_PARAMETER "server_service_version"
+
+#ifndef TGS_DEBUG_LOG
+#define TGS_DEBUG_LOG(message)
+#endif
diff --git a/code/modules/tgs/core/core.dm b/code/modules/tgs/core/core.dm
index 61f1e71d..b5029c57 100644
--- a/code/modules/tgs/core/core.dm
+++ b/code/modules/tgs/core/core.dm
@@ -1,144 +1,168 @@
-/world/TgsNew(datum/tgs_event_handler/event_handler)
-	var/tgs_version = world.params[TGS_VERSION_PARAMETER]
-	if(!tgs_version)
-		return
-
-	var/path = SelectTgsApi(tgs_version)
-	if(!path)
-		TGS_ERROR_LOG("Found unsupported API version: [tgs_version]. If this is a valid version please report this, backporting is done on demand.")
-
-	TGS_INFO_LOG("Activating API for version [tgs_version]")
-	var/datum/tgs_api/new_api = new path
-
-	var/result = new_api.OnWorldNew(event_handler ? event_handler : new /datum/tgs_event_handler/tgs_default)
-	if(result && result != TGS_UNIMPLEMENTED)
-		TGS_WRITE_GLOBAL(tgs, new_api)
-	else
-		TGS_ERROR_LOG("Failed to activate API!")
-
-/world/proc/SelectTgsApi(tgs_version)
-	//remove the old 3.0 header
-	tgs_version = replacetext(tgs_version, "/tg/station 13 Server v", "")
-
-	var/list/version_bits = splittext(tgs_version, ".")
-
-	var/super = text2num(version_bits[1])
-	var/major = text2num(version_bits[2])
-	var/minor = text2num(version_bits[3])
-	var/patch = text2num(version_bits[4])
-
-	switch(super)
-		if(3)
-			switch(major)
-				if(2)
-					return /datum/tgs_api/v3210
-
-	if(super != null && major != null && minor != null && patch != null && tgs_version > TgsMaximumAPIVersion())
-		TGS_ERROR_LOG("Detected unknown API version! Defaulting to latest. Update the DMAPI to fix this problem.")
-		return /datum/tgs_api/latest
-
-/world/TgsMaximumAPIVersion()
-	return "4.0.0.0"
-
-/world/TgsMinimumAPIVersion()
-	return "3.2.0.0"
-
-/world/TgsInitializationComplete()
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		api.OnInitializationComplete()
-
-/world/proc/TgsTopic(T)
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		var/result = api.OnTopic(T)
-		if(result != TGS_UNIMPLEMENTED)
-			return result
-
-/world/TgsRevision()
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		var/result = api.Revision()
-		if(result != TGS_UNIMPLEMENTED)
-			return result
-
-/world/TgsReboot()
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		api.OnReboot()
-
-/world/TgsAvailable()
-	return TGS_READ_GLOBAL(tgs) != null
-
-/world/TgsVersion()
-	return world.params[TGS_VERSION_PARAMETER]
-
-/world/TgsInstanceName()
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		var/result = api.InstanceName()
-		if(result != TGS_UNIMPLEMENTED)
-			return result
-
-/world/TgsTestMerges()
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		var/result = api.TestMerges()
-		if(result != TGS_UNIMPLEMENTED)
-			return result
-	return list()
-
-/world/TgsEndProcess()
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		api.EndProcess()
-
-/world/TgsChatChannelInfo()
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		var/result = api.ChatChannelInfo()
-		if(result != TGS_UNIMPLEMENTED)
-			return result
-	return list()
-
-/world/TgsChatBroadcast(message, list/channels)
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		api.ChatBroadcast(message, channels)
-
-/world/TgsTargetedChatBroadcast(message, admin_only)
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		api.ChatTargetedBroadcast(message, admin_only)
-
-/world/TgsChatPrivateMessage(message, datum/tgs_chat_user/user)
-	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
-	if(api)
-		api.ChatPrivateMessage(message, user)
-
-/*
-The MIT License
-
-Copyright (c) 2017 Jordan Brown
-
-Permission is hereby granted, free of charge,
-to any person obtaining a copy of this software and
-associated documentation files (the "Software"), to
-deal in the Software without restriction, including
-without limitation the rights to use, copy, modify,
-merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom
-the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice
-shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
-ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
+/world/TgsNew(datum/tgs_event_handler/event_handler, minimum_required_security_level = TGS_SECURITY_ULTRASAFE)
+	var/current_api = TGS_READ_GLOBAL(tgs)
+	if(current_api)
+		TGS_ERROR_LOG("API datum already set (\ref[current_api] ([current_api]))! Was TgsNew() called more than once?")
+		return
+
+	if(!(minimum_required_security_level in list(TGS_SECURITY_ULTRASAFE, TGS_SECURITY_SAFE, TGS_SECURITY_TRUSTED)))
+		TGS_ERROR_LOG("Invalid minimum_required_security_level: [minimum_required_security_level]!")
+		return
+
+#ifdef TGS_V3_API
+	if(minimum_required_security_level != TGS_SECURITY_TRUSTED)
+		TGS_WARNING_LOG("V3 DMAPI requires trusted security!")
+		minimum_required_security_level = TGS_SECURITY_TRUSTED
+#endif
+	var/raw_parameter = world.params[TGS_VERSION_PARAMETER]
+	if(!raw_parameter)
+		return
+
+	var/datum/tgs_version/version = new(raw_parameter)
+	if(!version.Valid(FALSE))
+		TGS_ERROR_LOG("Failed to validate DMAPI version parameter: [raw_parameter]!")
+		return
+
+	var/api_datum
+	switch(version.suite)
+		if(3)
+#ifndef TGS_V3_API
+			TGS_ERROR_LOG("Detected V3 API but TGS_V3_API isn't defined!")
+			return
+#else
+			switch(version.minor)
+				if(2)
+					api_datum = /datum/tgs_api/v3210
+#endif
+		if(4)
+			switch(version.minor)
+				if(0)
+					api_datum = /datum/tgs_api/v4
+		if(5)
+			api_datum = /datum/tgs_api/v5
+
+	var/datum/tgs_version/max_api_version = TgsMaximumApiVersion();
+	if(version.suite != null && version.minor != null && version.patch != null && version.deprecated_patch != null && version.deprefixed_parameter > max_api_version.deprefixed_parameter)
+		TGS_ERROR_LOG("Detected unknown Interop API version! Defaulting to latest. Update the DMAPI to fix this problem.")
+		api_datum = /datum/tgs_api/latest
+
+	if(!api_datum)
+		TGS_ERROR_LOG("Found unsupported Interop API version: [raw_parameter]. If this is a valid version please report this, backporting is done on demand.")
+		return
+
+	TGS_INFO_LOG("Activating API for version [version.deprefixed_parameter]")
+
+	if(event_handler && !istype(event_handler))
+		TGS_ERROR_LOG("Invalid parameter for event_handler: [event_handler]")
+		event_handler = null
+
+	var/datum/tgs_api/new_api = new api_datum(event_handler, version)
+
+	TGS_WRITE_GLOBAL(tgs, new_api)
+
+	var/result = new_api.OnWorldNew(minimum_required_security_level)
+	if(!result || result == TGS_UNIMPLEMENTED)
+		TGS_WRITE_GLOBAL(tgs, null)
+		TGS_ERROR_LOG("Failed to activate API!")
+
+/world/TgsMaximumApiVersion()
+	return new /datum/tgs_version("5.x.x")
+
+/world/TgsMinimumApiVersion()
+	return new /datum/tgs_version("3.2.x")
+
+/world/TgsInitializationComplete()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		api.OnInitializationComplete()
+
+/world/proc/TgsTopic(T)
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		var/result = api.OnTopic(T)
+		if(result != TGS_UNIMPLEMENTED)
+			return result
+
+/world/TgsRevision()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		var/result = api.Revision()
+		if(result != TGS_UNIMPLEMENTED)
+			return result
+
+/world/TgsReboot()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		api.OnReboot()
+
+/world/TgsAvailable()
+	return TGS_READ_GLOBAL(tgs) != null
+
+/world/TgsVersion()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		return api.version
+
+/world/TgsApiVersion()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		return api.ApiVersion()
+
+/world/TgsEngine()
+#ifdef OPENDREAM
+	return TGS_ENGINE_TYPE_OPENDREAM
+#else
+	return TGS_ENGINE_TYPE_BYOND
+#endif
+
+/world/TgsInstanceName()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		var/result = api.InstanceName()
+		if(result != TGS_UNIMPLEMENTED)
+			return result
+
+/world/TgsTestMerges()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		var/result = api.TestMerges()
+		if(result != TGS_UNIMPLEMENTED)
+			return result
+	return list()
+
+/world/TgsEndProcess()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		api.EndProcess()
+
+/world/TgsChatChannelInfo()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		var/result = api.ChatChannelInfo()
+		if(result != TGS_UNIMPLEMENTED)
+			return result
+	return list()
+
+/world/TgsChatBroadcast(message, list/channels)
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		api.ChatBroadcast(message, channels)
+
+/world/TgsTargetedChatBroadcast(message, admin_only)
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		api.ChatTargetedBroadcast(message, admin_only)
+
+/world/TgsChatPrivateMessage(message, datum/tgs_chat_user/user)
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		api.ChatPrivateMessage(message, user)
+
+/world/TgsSecurityLevel()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		return api.SecurityLevel()
+
+/world/TgsVisibility()
+	var/datum/tgs_api/api = TGS_READ_GLOBAL(tgs)
+	if(api)
+		return api.Visibility()
diff --git a/code/modules/tgs/core/datum.dm b/code/modules/tgs/core/datum.dm
index 6af39a75..d2c7a6d3 100644
--- a/code/modules/tgs/core/datum.dm
+++ b/code/modules/tgs/core/datum.dm
@@ -1,74 +1,71 @@
-TGS_DEFINE_AND_SET_GLOBAL(tgs, null)
-
-/datum/tgs_api
-
-/datum/tgs_api/latest
-	parent_type = /datum/tgs_api/v3210
-
-TGS_PROTECT_DATUM(/datum/tgs_api)
-
-/datum/tgs_api/proc/ApiVersion()
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/OnWorldNew(datum/tgs_event_handler/event_handler)
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/OnInitializationComplete()
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/OnTopic(T)
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/OnReboot()
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/InstanceName()
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/TestMerges()
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/EndProcess()
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/Revision()
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/ChatChannelInfo()
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/ChatBroadcast(message, list/channels)
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/ChatTargetedBroadcast(message, admin_only)
-	return TGS_UNIMPLEMENTED
-
-/datum/tgs_api/proc/ChatPrivateMessage(message, admin_only)
-	return TGS_UNIMPLEMENTED
-
-/*
-The MIT License
-
-Copyright (c) 2017 Jordan Brown
-
-Permission is hereby granted, free of charge,
-to any person obtaining a copy of this software and
-associated documentation files (the "Software"), to
-deal in the Software without restriction, including
-without limitation the rights to use, copy, modify,
-merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom
-the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice
-shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
-ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
+TGS_DEFINE_AND_SET_GLOBAL(tgs, null)
+
+/datum/tgs_api
+	var/datum/tgs_version/version
+	var/datum/tgs_event_handler/event_handler
+
+	var/list/warned_deprecated_command_runs
+
+/datum/tgs_api/New(datum/tgs_event_handler/event_handler, datum/tgs_version/version)
+	. = ..()
+	src.event_handler = event_handler
+	src.version = version
+
+/datum/tgs_api/proc/TerminateWorld()
+	while(TRUE)
+		TGS_DEBUG_LOG("About to terminate world. Tick: [world.time], sleep_offline: [world.sleep_offline]")
+		world.sleep_offline = FALSE // https://www.byond.com/forum/post/2894866
+		del(world)
+		world.sleep_offline = FALSE // just in case, this is BYOND after all...
+		sleep(1)
+		TGS_DEBUG_LOG("BYOND DIDN'T TERMINATE THE WORLD!!! TICK IS: [world.time], sleep_offline: [world.sleep_offline]")
+
+/datum/tgs_api/latest
+	parent_type = /datum/tgs_api/v5
+
+TGS_PROTECT_DATUM(/datum/tgs_api)
+
+/datum/tgs_api/proc/ApiVersion()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/OnWorldNew(datum/tgs_event_handler/event_handler)
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/OnInitializationComplete()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/OnTopic(T)
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/OnReboot()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/InstanceName()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/TestMerges()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/EndProcess()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/Revision()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/ChatChannelInfo()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/ChatBroadcast(message, list/channels)
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/ChatTargetedBroadcast(message, admin_only)
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/ChatPrivateMessage(message, datum/tgs_chat_user/user)
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/SecurityLevel()
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/proc/Visibility()
+	return TGS_UNIMPLEMENTED
diff --git a/code/modules/tgs/core/tgs_version.dm b/code/modules/tgs/core/tgs_version.dm
new file mode 100644
index 00000000..6d19cdb2
--- /dev/null
+++ b/code/modules/tgs/core/tgs_version.dm
@@ -0,0 +1,28 @@
+/datum/tgs_version/New(raw_parameter)
+	src.raw_parameter = raw_parameter
+	deprefixed_parameter = replacetext(raw_parameter, "/tg/station 13 Server v", "")
+	var/list/version_bits = splittext(deprefixed_parameter, ".")
+
+	suite = text2num(version_bits[1])
+	if(version_bits.len > 1)
+		minor = text2num(version_bits[2])
+		if(version_bits.len > 2)
+			patch = text2num(version_bits[3])
+			if(version_bits.len == 4)
+				deprecated_patch = text2num(version_bits[4])
+
+/datum/tgs_version/proc/Valid(allow_wildcards = FALSE)
+	if(suite == null)
+		return FALSE
+	if(allow_wildcards)
+		return TRUE
+	return !Wildcard()
+
+/datum/tgs_version/Wildcard()
+	return minor == null || patch == null
+
+/datum/tgs_version/Equals(datum/tgs_version/other_version)
+	if(!istype(other_version))
+		return FALSE
+
+	return suite == other_version.suite && minor == other_version.minor && patch == other_version.patch && deprecated_patch == other_version.deprecated_patch
diff --git a/code/modules/tgs/includes.dm b/code/modules/tgs/includes.dm
index 7ca906c8..a8c84bb7 100644
--- a/code/modules/tgs/includes.dm
+++ b/code/modules/tgs/includes.dm
@@ -1,6 +1,21 @@
-#include "core\_definitions.dm"
-#include "core\core.dm"
-#include "core\datum.dm"
-#include "core\default_event_handler.dm"
-#include "v3210\api.dm"
-#include "v3210\commands.dm"
+#include "core\_definitions.dm"
+#include "core\core.dm"
+#include "core\datum.dm"
+#include "core\tgs_version.dm"
+
+#ifdef TGS_V3_API
+#include "v3210\api.dm"
+#include "v3210\commands.dm"
+#endif
+
+#include "v4\api.dm"
+#include "v4\commands.dm"
+
+#include "v5\_defines.dm"
+#include "v5\api.dm"
+#include "v5\bridge.dm"
+#include "v5\chunking.dm"
+#include "v5\commands.dm"
+#include "v5\serializers.dm"
+#include "v5\topic.dm"
+#include "v5\undefs.dm"
diff --git a/code/modules/tgs/v3210/README.md b/code/modules/tgs/v3210/README.md
new file mode 100644
index 00000000..c50faf75
--- /dev/null
+++ b/code/modules/tgs/v3210/README.md
@@ -0,0 +1,6 @@
+# DMAPI V3
+
+This DMAPI implements bridge using file output which TGS monitors for.
+
+- [api.dm](./api.dm) contains the bulk of the API code.
+- [commands.dm](./commands.dm) contains functions relating to `/datum/tgs_chat_command`s.
diff --git a/code/modules/tgs/v3210/api.dm b/code/modules/tgs/v3210/api.dm
index 2a95f786..5f1cb320 100644
--- a/code/modules/tgs/v3210/api.dm
+++ b/code/modules/tgs/v3210/api.dm
@@ -1,248 +1,244 @@
-#define REBOOT_MODE_NORMAL 0
-#define REBOOT_MODE_HARD 1
-#define REBOOT_MODE_SHUTDOWN 2
-
-#define SERVICE_WORLD_PARAM "server_service"
-#define SERVICE_INSTANCE_PARAM "server_instance"
-#define SERVICE_PR_TEST_JSON "prtestjob.json"
-#define SERVICE_INTERFACE_DLL "TGDreamDaemonBridge.dll"
-#define SERVICE_INTERFACE_FUNCTION "DDEntryPoint"
-
-#define SERVICE_CMD_HARD_REBOOT "hard_reboot"
-#define SERVICE_CMD_GRACEFUL_SHUTDOWN "graceful_shutdown"
-#define SERVICE_CMD_WORLD_ANNOUNCE "world_announce"
-#define SERVICE_CMD_LIST_CUSTOM "list_custom_commands"
-#define SERVICE_CMD_API_COMPATIBLE "api_compat"
-#define SERVICE_CMD_PLAYER_COUNT "client_count"
-
-#define SERVICE_CMD_PARAM_KEY "serviceCommsKey"
-#define SERVICE_CMD_PARAM_COMMAND "command"
-#define SERVICE_CMD_PARAM_SENDER "sender"
-#define SERVICE_CMD_PARAM_CUSTOM "custom"
-
-#define SERVICE_REQUEST_KILL_PROCESS "killme"
-#define SERVICE_REQUEST_IRC_BROADCAST "irc"
-#define SERVICE_REQUEST_IRC_ADMIN_CHANNEL_MESSAGE "send2irc"
-#define SERVICE_REQUEST_WORLD_REBOOT "worldreboot"
-#define SERVICE_REQUEST_API_VERSION "api_ver"
-
-#define SERVICE_RETURN_SUCCESS "SUCCESS"
-
-/datum/tgs_api/v3210
-	var/reboot_mode = REBOOT_MODE_NORMAL
-	var/comms_key
-	var/instance_name
-	var/originmastercommit
-	var/commit
-	var/list/cached_custom_tgs_chat_commands
-	var/warned_revison = FALSE
-	var/warned_custom_commands = FALSE
-
-/datum/tgs_api/v3210/ApiVersion()
-	return "3.2.1.0"
-
-/datum/tgs_api/v3210/proc/trim_left(text)
-	for (var/i = 1 to length(text))
-		if (text2ascii(text, i) > 32)
-			return copytext(text, i)
-	return ""
-
-/datum/tgs_api/v3210/proc/trim_right(text)
-	for (var/i = length(text), i > 0, i--)
-		if (text2ascii(text, i) > 32)
-			return copytext(text, 1, i + 1)
-	return ""
-
-/datum/tgs_api/v3210/proc/file2list(filename)
-	return splittext(trim_left(trim_right(file2text(filename))), "\n")
-
-/datum/tgs_api/v3210/OnWorldNew(datum/tgs_event_handler/event_handler)	//don't use event handling in this version
-	. = FALSE
-	comms_key = world.params[SERVICE_WORLD_PARAM]
-	instance_name = world.params[SERVICE_INSTANCE_PARAM]
-	if(!instance_name)
-		instance_name = "TG Station Server"	//maybe just upgraded
-
-	var/list/logs = file2list(".git/logs/HEAD")
-	if(logs.len)
-		logs = splittext(logs[logs.len - 1], " ")
-		commit = logs[2]
-	logs = file2list(".git/logs/refs/remotes/origin/master")
-	if(logs.len)
-		originmastercommit = splittext(logs[logs.len - 1], " ")[2]
-
-	if(world.system_type != MS_WINDOWS)
-		TGS_ERROR_LOG("This API version is only supported on Windows. Not running on Windows. Aborting initialization!")
-		return
-	ListServiceCustomCommands(TRUE)
-	ExportService("[SERVICE_REQUEST_API_VERSION] [ApiVersion()]", TRUE)
-	return TRUE
-
-//nothing to do for v3
-/datum/tgs_api/v3210/OnInitializationComplete()
-	return
-
-/datum/tgs_api/v3210/InstanceName()
-	return world.params[SERVICE_INSTANCE_PARAM]
-
-/datum/tgs_api/v3210/proc/ExportService(command, skip_compat_check = FALSE)
-	. = FALSE
-	if(skip_compat_check && !fexists(SERVICE_INTERFACE_DLL))
-		TGS_ERROR_LOG("Service parameter present but no interface DLL detected. This is symptomatic of running a service less than version 3.1! Please upgrade.")
-		return
-	call(SERVICE_INTERFACE_DLL, SERVICE_INTERFACE_FUNCTION)(instance_name, command)	//trust no retval
-	return TRUE
-
-/datum/tgs_api/v3210/OnTopic(T)
-	var/list/params = params2list(T)
-	var/their_sCK = params[SERVICE_CMD_PARAM_KEY]
-	if(!their_sCK)
-		return FALSE	//continue world/Topic
-
-	if(their_sCK != comms_key)
-		return "Invalid comms key!";
-
-	var/command = params[SERVICE_CMD_PARAM_COMMAND]
-	if(!command)
-		return "No command!"
-
-	switch(command)
-		if(SERVICE_CMD_API_COMPATIBLE)
-			return SERVICE_RETURN_SUCCESS
-		if(SERVICE_CMD_HARD_REBOOT)
-			if(reboot_mode != REBOOT_MODE_HARD)
-				reboot_mode = REBOOT_MODE_HARD
-				TGS_INFO_LOG("Hard reboot requested by service")
-				TGS_NOTIFY_ADMINS("The world will hard reboot at the end of the game. Requested by TGS.")
-		if(SERVICE_CMD_GRACEFUL_SHUTDOWN)
-			if(reboot_mode != REBOOT_MODE_SHUTDOWN)
-				reboot_mode = REBOOT_MODE_SHUTDOWN
-				TGS_INFO_LOG("Shutdown requested by service")
-				TGS_NOTIFY_ADMINS("The world will shutdown at the end of the game. Requested by TGS.")
-		if(SERVICE_CMD_WORLD_ANNOUNCE)
-			var/msg = params["message"]
-			if(!istext(msg) || !msg)
-				return "No message set!"
-			TGS_WORLD_ANNOUNCE(msg)
-			return SERVICE_RETURN_SUCCESS
-		if(SERVICE_CMD_PLAYER_COUNT)
-			return "[TGS_CLIENT_COUNT]"
-		if(SERVICE_CMD_LIST_CUSTOM)
-			return json_encode(ListServiceCustomCommands(FALSE))
-		else
-			var/custom_command_result = HandleServiceCustomCommand(lowertext(command), params[SERVICE_CMD_PARAM_SENDER], params[SERVICE_CMD_PARAM_CUSTOM])
-			if(custom_command_result)
-				return istext(custom_command_result) ? custom_command_result : SERVICE_RETURN_SUCCESS
-	return "Unknown command: [command]"
-
-/datum/tgs_api/v3210/OnReboot()
-	switch(reboot_mode)
-		if(REBOOT_MODE_HARD)
-			TGS_WORLD_ANNOUNCE("Hard reboot triggered, you will automatically reconnect...")
-			EndProcess()
-		if(REBOOT_MODE_SHUTDOWN)
-			TGS_WORLD_ANNOUNCE("The server is shutting down...")
-			EndProcess()
-		else
-			ExportService(SERVICE_REQUEST_WORLD_REBOOT) //just let em know
-
-/datum/tgs_api/v3210/TestMerges()
-	//do the best we can here as the datum can't be completed using the v3 api
-	. = list()
-	if(!fexists(SERVICE_PR_TEST_JSON))
-		return
-	var/list/json = json_decode(file2text(SERVICE_PR_TEST_JSON))
-	if(!json)
-		return
-	for(var/I in json)
-		var/datum/tgs_revision_information/test_merge/tm = new
-		tm.number = text2num(I)
-		var/list/entry = json[I]
-		tm.pull_request_commit = entry["commit"]
-		tm.author = entry["author"]
-		tm.title = entry["title"]
-		. += tm
-
-/datum/tgs_api/v3210/Revision()
-	if(!warned_revison)
-		TGS_ERROR_LOG("Use of TgsRevision on [ApiVersion()] origin_commit only points to master!")
-		warned_revison = TRUE
-	var/datum/tgs_revision_information/ri = new
-	ri.commit = commit
-	ri.origin_commit = originmastercommit
-
-/datum/tgs_api/v3210/EndProcess()
-	sleep(world.tick_lag)	//flush the buffers
-	ExportService(SERVICE_REQUEST_KILL_PROCESS)
-
-/datum/tgs_api/v3210/ChatChannelInfo()
-	return list()
-
-/datum/tgs_api/v3210/ChatBroadcast(message, list/channels)
-	if(channels)
-		return TGS_UNIMPLEMENTED
-	ChatTargetedBroadcast(message, TRUE)
-	ChatTargetedBroadcast(message, FALSE)
-
-/datum/tgs_api/v3210/ChatTargetedBroadcast(message, admin_only)
-	ExportService("[admin_only ? SERVICE_REQUEST_IRC_ADMIN_CHANNEL_MESSAGE : SERVICE_REQUEST_IRC_BROADCAST] [message]")
-
-/datum/tgs_api/v3210/ChatPrivateMessage(message, admin_only)
-	return TGS_UNIMPLEMENTED
-
-#undef REBOOT_MODE_NORMAL
-#undef REBOOT_MODE_HARD
-#undef REBOOT_MODE_SHUTDOWN
-
-#undef SERVICE_WORLD_PARAM
-#undef SERVICE_INSTANCE_PARAM
-#undef SERVICE_PR_TEST_JSON
-#undef SERVICE_INTERFACE_DLL
-#undef SERVICE_INTERFACE_FUNCTION
-
-#undef SERVICE_CMD_HARD_REBOOT
-#undef SERVICE_CMD_GRACEFUL_SHUTDOWN
-#undef SERVICE_CMD_WORLD_ANNOUNCE
-#undef SERVICE_CMD_LIST_CUSTOM
-#undef SERVICE_CMD_API_COMPATIBLE
-#undef SERVICE_CMD_PLAYER_COUNT
-
-#undef SERVICE_CMD_PARAM_KEY
-#undef SERVICE_CMD_PARAM_COMMAND
-#undef SERVICE_CMD_PARAM_SENDER
-#undef SERVICE_CMD_PARAM_CUSTOM
-
-#undef SERVICE_REQUEST_KILL_PROCESS
-#undef SERVICE_REQUEST_IRC_BROADCAST
-#undef SERVICE_REQUEST_IRC_ADMIN_CHANNEL_MESSAGE
-#undef SERVICE_REQUEST_WORLD_REBOOT
-#undef SERVICE_REQUEST_API_VERSION
-
-#undef SERVICE_RETURN_SUCCESS
-
-/*
-The MIT License
-
-Copyright (c) 2017 Jordan Brown
-
-Permission is hereby granted, free of charge,
-to any person obtaining a copy of this software and
-associated documentation files (the "Software"), to
-deal in the Software without restriction, including
-without limitation the rights to use, copy, modify,
-merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom
-the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice
-shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
-ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
+#define REBOOT_MODE_NORMAL 0
+#define REBOOT_MODE_HARD 1
+#define REBOOT_MODE_SHUTDOWN 2
+
+#define SERVICE_WORLD_PARAM "server_service"
+#define SERVICE_INSTANCE_PARAM "server_instance"
+#define SERVICE_PR_TEST_JSON "prtestjob.json"
+#define SERVICE_INTERFACE_DLL "TGDreamDaemonBridge.dll"
+#define SERVICE_INTERFACE_FUNCTION "DDEntryPoint"
+
+#define SERVICE_CMD_HARD_REBOOT "hard_reboot"
+#define SERVICE_CMD_GRACEFUL_SHUTDOWN "graceful_shutdown"
+#define SERVICE_CMD_WORLD_ANNOUNCE "world_announce"
+#define SERVICE_CMD_LIST_CUSTOM "list_custom_commands"
+#define SERVICE_CMD_API_COMPATIBLE "api_compat"
+#define SERVICE_CMD_PLAYER_COUNT "client_count"
+
+#define SERVICE_CMD_PARAM_KEY "serviceCommsKey"
+#define SERVICE_CMD_PARAM_COMMAND "command"
+#define SERVICE_CMD_PARAM_SENDER "sender"
+#define SERVICE_CMD_PARAM_CUSTOM "custom"
+
+#define SERVICE_REQUEST_KILL_PROCESS "killme"
+#define SERVICE_REQUEST_IRC_BROADCAST "irc"
+#define SERVICE_REQUEST_IRC_ADMIN_CHANNEL_MESSAGE "send2irc"
+#define SERVICE_REQUEST_WORLD_REBOOT "worldreboot"
+#define SERVICE_REQUEST_API_VERSION "api_ver"
+
+#define SERVICE_RETURN_SUCCESS "SUCCESS"
+
+#define TGS_FILE2LIST(filename) (splittext(trim_left(trim_right(file2text(filename))), "\n"))
+
+/datum/tgs_api/v3210
+	var/reboot_mode = REBOOT_MODE_NORMAL
+	var/comms_key
+	var/instance_name
+	var/originmastercommit
+	var/commit
+	var/list/cached_custom_tgs_chat_commands
+	var/warned_revison = FALSE
+	var/warned_custom_commands = FALSE
+
+/datum/tgs_api/v3210/ApiVersion()
+	return new /datum/tgs_version("3.2.1.3")
+
+/datum/tgs_api/v3210/proc/trim_left(text)
+	for (var/i = 1 to length(text))
+		if (text2ascii(text, i) > 32)
+			return copytext(text, i)
+	return ""
+
+/datum/tgs_api/v3210/proc/trim_right(text)
+	for (var/i = length(text), i > 0, i--)
+		if (text2ascii(text, i) > 32)
+			return copytext(text, 1, i + 1)
+	return ""
+
+/datum/tgs_api/v3210/OnWorldNew(minimum_required_security_level)
+	. = FALSE
+
+	comms_key = world.params[SERVICE_WORLD_PARAM]
+	instance_name = world.params[SERVICE_INSTANCE_PARAM]
+	if(!instance_name)
+		instance_name = "TG Station Server" //maybe just upgraded
+
+	var/list/logs = TGS_FILE2LIST(".git/logs/HEAD")
+	if(logs.len)
+		logs = splittext(logs[logs.len], " ")
+		if (logs.len >= 2)
+			commit = logs[2]
+		else
+			TGS_ERROR_LOG("Error parsing commit logs")
+
+	logs = TGS_FILE2LIST(".git/logs/refs/remotes/origin/master")
+	if(logs.len)
+		logs = splittext(logs[logs.len], " ")
+		if (logs.len >= 2)
+			originmastercommit = logs[2]
+		else
+			TGS_ERROR_LOG("Error parsing origin commmit logs")
+
+	if(world.system_type != MS_WINDOWS)
+		TGS_ERROR_LOG("This API version is only supported on Windows. Not running on Windows. Aborting initialization!")
+		return
+	ListServiceCustomCommands(TRUE)
+	var/datum/tgs_version/api_version = ApiVersion()
+	ExportService("[SERVICE_REQUEST_API_VERSION] [api_version.deprefixed_parameter]", TRUE)
+	return TRUE
+
+//nothing to do for v3
+/datum/tgs_api/v3210/OnInitializationComplete()
+	return
+
+/datum/tgs_api/v3210/InstanceName()
+	return world.params[SERVICE_INSTANCE_PARAM]
+
+/datum/tgs_api/v3210/proc/ExportService(command, skip_compat_check = FALSE)
+	. = FALSE
+	if(skip_compat_check && !fexists(SERVICE_INTERFACE_DLL))
+		TGS_ERROR_LOG("Service parameter present but no interface DLL detected. This is symptomatic of running a service less than version 3.1! Please upgrade.")
+		return
+	#if DM_VERSION >= 515
+	call_ext(SERVICE_INTERFACE_DLL, SERVICE_INTERFACE_FUNCTION)(instance_name, command) //trust no retval
+	#else
+	call(SERVICE_INTERFACE_DLL, SERVICE_INTERFACE_FUNCTION)(instance_name, command) //trust no retval
+	#endif
+	return TRUE
+
+/datum/tgs_api/v3210/OnTopic(T)
+	var/list/params = params2list(T)
+	var/their_sCK = params[SERVICE_CMD_PARAM_KEY]
+	if(!their_sCK)
+		return FALSE //continue world/Topic
+
+	if(their_sCK != comms_key)
+		return "Invalid comms key!";
+
+	var/command = params[SERVICE_CMD_PARAM_COMMAND]
+	if(!command)
+		return "No command!"
+
+	switch(command)
+		if(SERVICE_CMD_API_COMPATIBLE)
+			return SERVICE_RETURN_SUCCESS
+		if(SERVICE_CMD_HARD_REBOOT)
+			if(reboot_mode != REBOOT_MODE_HARD)
+				reboot_mode = REBOOT_MODE_HARD
+				TGS_INFO_LOG("Hard reboot requested by service")
+				TGS_NOTIFY_ADMINS("The world will hard reboot at the end of the game. Requested by TGS.")
+		if(SERVICE_CMD_GRACEFUL_SHUTDOWN)
+			if(reboot_mode != REBOOT_MODE_SHUTDOWN)
+				reboot_mode = REBOOT_MODE_SHUTDOWN
+				TGS_INFO_LOG("Shutdown requested by service")
+				TGS_NOTIFY_ADMINS("The world will shutdown at the end of the game. Requested by TGS.")
+		if(SERVICE_CMD_WORLD_ANNOUNCE)
+			var/msg = params["message"]
+			if(!istext(msg) || !msg)
+				return "No message set!"
+			TGS_WORLD_ANNOUNCE(msg)
+			return SERVICE_RETURN_SUCCESS
+		if(SERVICE_CMD_PLAYER_COUNT)
+			return "[TGS_CLIENT_COUNT]"
+		if(SERVICE_CMD_LIST_CUSTOM)
+			return json_encode(ListServiceCustomCommands(FALSE))
+		else
+			var/custom_command_result = HandleServiceCustomCommand(lowertext(command), params[SERVICE_CMD_PARAM_SENDER], params[SERVICE_CMD_PARAM_CUSTOM])
+			if(custom_command_result)
+				return istext(custom_command_result) ? custom_command_result : SERVICE_RETURN_SUCCESS
+	return "Unknown command: [command]"
+
+/datum/tgs_api/v3210/OnReboot()
+	switch(reboot_mode)
+		if(REBOOT_MODE_HARD)
+			TGS_WORLD_ANNOUNCE("Hard reboot triggered, you will automatically reconnect...")
+			EndProcess()
+		if(REBOOT_MODE_SHUTDOWN)
+			TGS_WORLD_ANNOUNCE("The server is shutting down...")
+			EndProcess()
+		else
+			ExportService(SERVICE_REQUEST_WORLD_REBOOT) //just let em know
+
+/datum/tgs_api/v3210/TestMerges()
+	//do the best we can here as the datum can't be completed using the v3 api
+	. = list()
+	if(!fexists(SERVICE_PR_TEST_JSON))
+		return
+	var/list/json = json_decode(file2text(SERVICE_PR_TEST_JSON))
+	if(!json)
+		return
+	for(var/I in json)
+		var/datum/tgs_revision_information/test_merge/tm = new
+		tm.number = text2num(I)
+		var/list/entry = json[I]
+		tm.head_commit = entry["commit"]
+		tm.author = entry["author"]
+		tm.title = entry["title"]
+		. += tm
+
+/datum/tgs_api/v3210/Revision()
+	if(!warned_revison)
+		var/datum/tgs_version/api_version = ApiVersion()
+		TGS_WARNING_LOG("Use of TgsRevision on [api_version.deprefixed_parameter] origin_commit only points to master!")
+		warned_revison = TRUE
+	var/datum/tgs_revision_information/ri = new
+	ri.commit = commit
+	ri.origin_commit = originmastercommit
+	return ri
+
+/datum/tgs_api/v3210/EndProcess()
+	sleep(world.tick_lag) //flush the buffers
+	ExportService(SERVICE_REQUEST_KILL_PROCESS)
+
+/datum/tgs_api/v3210/ChatChannelInfo()
+	return list() // :omegalul:
+
+/datum/tgs_api/v3210/ChatBroadcast(datum/tgs_message_content/message, list/channels)
+	if(channels)
+		return TGS_UNIMPLEMENTED
+	message = UpgradeDeprecatedChatMessage(message)
+	ChatTargetedBroadcast(message, TRUE)
+	ChatTargetedBroadcast(message, FALSE)
+
+/datum/tgs_api/v3210/ChatTargetedBroadcast(datum/tgs_message_content/message, admin_only)
+	message = UpgradeDeprecatedChatMessage(message)
+	ExportService("[admin_only ? SERVICE_REQUEST_IRC_ADMIN_CHANNEL_MESSAGE : SERVICE_REQUEST_IRC_BROADCAST] [message.text]")
+
+/datum/tgs_api/v3210/ChatPrivateMessage(message, datum/tgs_chat_user/user)
+	UpgradeDeprecatedChatMessage(message)
+	return TGS_UNIMPLEMENTED
+
+/datum/tgs_api/v3210/SecurityLevel()
+	return TGS_SECURITY_TRUSTED
+
+#undef REBOOT_MODE_NORMAL
+#undef REBOOT_MODE_HARD
+#undef REBOOT_MODE_SHUTDOWN
+
+#undef SERVICE_WORLD_PARAM
+#undef SERVICE_INSTANCE_PARAM
+#undef SERVICE_PR_TEST_JSON
+#undef SERVICE_INTERFACE_DLL
+#undef SERVICE_INTERFACE_FUNCTION
+
+#undef SERVICE_CMD_HARD_REBOOT
+#undef SERVICE_CMD_GRACEFUL_SHUTDOWN
+#undef SERVICE_CMD_WORLD_ANNOUNCE
+#undef SERVICE_CMD_LIST_CUSTOM
+#undef SERVICE_CMD_API_COMPATIBLE
+#undef SERVICE_CMD_PLAYER_COUNT
+
+#undef SERVICE_CMD_PARAM_KEY
+#undef SERVICE_CMD_PARAM_COMMAND
+#undef SERVICE_CMD_PARAM_SENDER
+#undef SERVICE_CMD_PARAM_CUSTOM
+
+#undef SERVICE_REQUEST_KILL_PROCESS
+#undef SERVICE_REQUEST_IRC_BROADCAST
+#undef SERVICE_REQUEST_IRC_ADMIN_CHANNEL_MESSAGE
+#undef SERVICE_REQUEST_WORLD_REBOOT
+#undef SERVICE_REQUEST_API_VERSION
+
+#undef SERVICE_RETURN_SUCCESS
+
+#undef TGS_FILE2LIST
diff --git a/code/modules/tgs/v3210/commands.dm b/code/modules/tgs/v3210/commands.dm
index 50466319..6961eea4 100644
--- a/code/modules/tgs/v3210/commands.dm
+++ b/code/modules/tgs/v3210/commands.dm
@@ -1,78 +1,58 @@
-#define SERVICE_JSON_PARAM_HELPTEXT "help_text"
-#define SERVICE_JSON_PARAM_ADMINONLY "admin_only"
-#define SERVICE_JSON_PARAM_REQUIREDPARAMETERS "required_parameters"
-
-/datum/tgs_api/v3210/proc/ListServiceCustomCommands(warnings_only)
-	if(!warnings_only)
-		. = list()
-	var/list/command_name_types = list()
-	var/list/warned_command_names = warnings_only ? list() : null
-	var/warned_about_the_dangers_of_robutussin = !warnings_only
-	for(var/I in typesof(/datum/tgs_chat_command) - /datum/tgs_chat_command)
-		if(!warned_about_the_dangers_of_robutussin)
-			TGS_ERROR_LOG("Custom chat commands in [ApiVersion()] lacks the /datum/tgs_chat_user/sender.channel field!")
-			warned_about_the_dangers_of_robutussin = TRUE
-		var/datum/tgs_chat_command/stc = I
-		var/command_name = initial(stc.name)
-		if(!command_name || findtext(command_name, " ") || findtext(command_name, "'") || findtext(command_name, "\""))
-			if(warnings_only && !warned_command_names[command_name])
-				TGS_ERROR_LOG("Custom command [command_name] can't be used as it is empty or contains illegal characters!")
-				warned_command_names[command_name] = TRUE
-			continue
-		
-		if(command_name_types[command_name])
-			if(warnings_only)
-				TGS_ERROR_LOG("Custom commands [command_name_types[command_name]] and [stc] have the same name, only [command_name_types[command_name]] will be available!")
-			continue
-		command_name_types[stc] = command_name
-
-		if(!warnings_only)
-			.[command_name] = list(SERVICE_JSON_PARAM_HELPTEXT = initial(stc.help_text), SERVICE_JSON_PARAM_ADMINONLY = initial(stc.admin_only), SERVICE_JSON_PARAM_REQUIREDPARAMETERS = 0)
-
-/datum/tgs_api/v3210/proc/HandleServiceCustomCommand(command, sender, params)
-	if(!cached_custom_tgs_chat_commands)
-		cached_custom_tgs_chat_commands = list()
-		for(var/I in typesof(/datum/tgs_chat_command) - /datum/tgs_chat_command)
-			var/datum/tgs_chat_command/stc = I
-			cached_custom_tgs_chat_commands[lowertext(initial(stc.name))] = stc
-
-	var/command_type = cached_custom_tgs_chat_commands[command]
-	if(!command_type)
-		return FALSE
-	var/datum/tgs_chat_command/stc = new command_type
-	var/datum/tgs_chat_user/user = new
-	user.friendly_name = sender
-	user.mention = sender
-	return stc.Run(user, params) || TRUE
-
-/*
-
-#undef SERVICE_JSON_PARAM_HELPTEXT
-#undef SERVICE_JSON_PARAM_ADMINONLY
-#undef SERVICE_JSON_PARAM_REQUIREDPARAMETERS
-
-The MIT License
-
-Copyright (c) 2017 Jordan Brown
-
-Permission is hereby granted, free of charge, 
-to any person obtaining a copy of this software and 
-associated documentation files (the "Software"), to 
-deal in the Software without restriction, including 
-without limitation the rights to use, copy, modify, 
-merge, publish, distribute, sublicense, and/or sell 
-copies of the Software, and to permit persons to whom 
-the Software is furnished to do so, 
-subject to the following conditions:
-
-The above copyright notice and this permission notice 
-shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 
-OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
-IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR 
-ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
-TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
-SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
+#define SERVICE_JSON_PARAM_HELPTEXT "help_text"
+#define SERVICE_JSON_PARAM_ADMINONLY "admin_only"
+#define SERVICE_JSON_PARAM_REQUIREDPARAMETERS "required_parameters"
+
+/datum/tgs_api/v3210/proc/ListServiceCustomCommands(warnings_only)
+	if(!warnings_only)
+		. = list()
+	var/list/command_name_types = list()
+	var/list/warned_command_names = warnings_only ? list() : null
+	var/warned_about_the_dangers_of_robutussin = !warnings_only
+	for(var/I in typesof(/datum/tgs_chat_command) - /datum/tgs_chat_command)
+		if(!warned_about_the_dangers_of_robutussin)
+			TGS_WARNING_LOG("Custom chat commands in [ApiVersion()] lacks the /datum/tgs_chat_user/sender.channel field!")
+			warned_about_the_dangers_of_robutussin = TRUE
+		var/datum/tgs_chat_command/stc = I
+		if(stc.ignore_type == I)
+			continue
+
+		var/command_name = initial(stc.name)
+		if(!command_name || findtext(command_name, " ") || findtext(command_name, "'") || findtext(command_name, "\""))
+			if(warnings_only && !warned_command_names[command_name])
+				TGS_ERROR_LOG("Custom command [command_name] can't be used as it is empty or contains illegal characters!")
+				warned_command_names[command_name] = TRUE
+			continue
+
+		if(command_name_types[command_name])
+			if(warnings_only)
+				TGS_ERROR_LOG("Custom commands [command_name_types[command_name]] and [stc] have the same name, only [command_name_types[command_name]] will be available!")
+			continue
+		command_name_types[stc] = command_name
+
+		if(!warnings_only)
+			.[command_name] = list(SERVICE_JSON_PARAM_HELPTEXT = initial(stc.help_text), SERVICE_JSON_PARAM_ADMINONLY = initial(stc.admin_only), SERVICE_JSON_PARAM_REQUIREDPARAMETERS = 0)
+
+/datum/tgs_api/v3210/proc/HandleServiceCustomCommand(command, sender, params)
+	if(!cached_custom_tgs_chat_commands)
+		cached_custom_tgs_chat_commands = list()
+		for(var/I in typesof(/datum/tgs_chat_command) - /datum/tgs_chat_command)
+			var/datum/tgs_chat_command/stc = I
+			cached_custom_tgs_chat_commands[lowertext(initial(stc.name))] = stc
+
+	var/command_type = cached_custom_tgs_chat_commands[command]
+	if(!command_type)
+		return FALSE
+	var/datum/tgs_chat_command/stc = new command_type
+	var/datum/tgs_chat_user/user = new
+	user.friendly_name = sender
+
+	// Discord hack, fix the mention if it's only numbers (fuck you IRC trolls)
+	var/regex/discord_id_regex = regex("^\[0-9\]+$")
+	if(findtext(sender, discord_id_regex))
+		sender = "<@[sender]>"
+
+	user.mention = sender
+	var/datum/tgs_message_content/result = stc.Run(user, params)
+	result = UpgradeDeprecatedCommandResponse(result, command)
+
+	return result ? result.text : TRUE
diff --git a/code/modules/tgs/v4/api.dm b/code/modules/tgs/v4/api.dm
new file mode 100644
index 00000000..6dbb9a7d
--- /dev/null
+++ b/code/modules/tgs/v4/api.dm
@@ -0,0 +1,322 @@
+#define TGS4_PARAM_INFO_JSON "tgs_json"
+
+#define TGS4_INTEROP_ACCESS_IDENTIFIER "tgs_tok"
+
+#define TGS4_RESPONSE_SUCCESS "tgs_succ"
+
+#define TGS4_TOPIC_CHANGE_PORT "tgs_port"
+#define TGS4_TOPIC_CHANGE_REBOOT_MODE "tgs_rmode"
+#define TGS4_TOPIC_CHAT_COMMAND "tgs_chat_comm"
+#define TGS4_TOPIC_EVENT "tgs_event"
+#define TGS4_TOPIC_INTEROP_RESPONSE "tgs_interop"
+
+#define TGS4_COMM_NEW_PORT "tgs_new_port"
+#define TGS4_COMM_VALIDATE "tgs_validate"
+#define TGS4_COMM_SERVER_PRIMED "tgs_prime"
+#define TGS4_COMM_WORLD_REBOOT "tgs_reboot"
+#define TGS4_COMM_END_PROCESS "tgs_kill"
+#define TGS4_COMM_CHAT "tgs_chat_send"
+
+#define TGS4_PARAMETER_COMMAND "tgs_com"
+#define TGS4_PARAMETER_DATA "tgs_data"
+
+#define TGS4_PORT_CRITFAIL_MESSAGE " Must exit to let watchdog reboot..."
+
+#define EXPORT_TIMEOUT_DS 200
+
+/datum/tgs_api/v4
+	var/access_identifier
+	var/instance_name
+	var/json_path
+	var/chat_channels_json_path
+	var/chat_commands_json_path
+	var/server_commands_json_path
+	var/reboot_mode = TGS_REBOOT_MODE_NORMAL
+	var/security_level
+
+	var/requesting_new_port = FALSE
+
+	var/list/intercepted_message_queue
+
+	var/list/custom_commands
+
+	var/list/cached_test_merges
+	var/datum/tgs_revision_information/cached_revision
+
+	var/export_lock = FALSE
+	var/list/last_interop_response
+
+/datum/tgs_api/v4/ApiVersion()
+	return new /datum/tgs_version("4.0.0.0")
+
+/datum/tgs_api/v4/OnWorldNew(minimum_required_security_level)
+	if(minimum_required_security_level == TGS_SECURITY_ULTRASAFE)
+		TGS_WARNING_LOG("V4 DMAPI requires safe security!")
+		minimum_required_security_level = TGS_SECURITY_SAFE
+
+	json_path = world.params[TGS4_PARAM_INFO_JSON]
+	if(!json_path)
+		TGS_ERROR_LOG("Missing [TGS4_PARAM_INFO_JSON] world parameter!")
+		return
+	var/json_file = file2text(json_path)
+	if(!json_file)
+		TGS_ERROR_LOG("Missing specified json file: [json_path]")
+		return
+	var/cached_json = json_decode(json_file)
+	if(!cached_json)
+		TGS_ERROR_LOG("Failed to decode info json: [json_file]")
+		return
+
+	access_identifier = cached_json["accessIdentifier"]
+	server_commands_json_path = cached_json["serverCommandsJson"]
+
+	if(cached_json["apiValidateOnly"])
+		TGS_INFO_LOG("Validating API and exiting...")
+		Export(TGS4_COMM_VALIDATE, list(TGS4_PARAMETER_DATA = "[minimum_required_security_level]"))
+		TerminateWorld()
+
+	security_level = cached_json["securityLevel"]
+	chat_channels_json_path = cached_json["chatChannelsJson"]
+	chat_commands_json_path = cached_json["chatCommandsJson"]
+	instance_name = cached_json["instanceName"]
+
+	ListCustomCommands()
+
+	var/list/revisionData = cached_json["revision"]
+	if(revisionData)
+		cached_revision = new
+		cached_revision.commit = revisionData["commitSha"]
+		cached_revision.origin_commit = revisionData["originCommitSha"]
+
+	cached_test_merges = list()
+	var/list/json = cached_json["testMerges"]
+	for(var/entry in json)
+		var/datum/tgs_revision_information/test_merge/tm = new
+		tm.timestamp = text2num(entry["timeMerged"])
+
+		var/list/revInfo = entry["revision"]
+		if(revInfo)
+			tm.commit = revInfo["commitSha"]
+			tm.origin_commit = revInfo["originCommitSha"]
+
+		tm.title = entry["titleAtMerge"]
+		tm.body = entry["bodyAtMerge"]
+		tm.url = entry["url"]
+		tm.author = entry["author"]
+		tm.number = entry["number"]
+		tm.head_commit = entry["pullRequestRevision"]
+		tm.comment = entry["comment"]
+
+		cached_test_merges += tm
+
+	return TRUE
+
+/datum/tgs_api/v4/OnInitializationComplete()
+	Export(TGS4_COMM_SERVER_PRIMED)
+
+/datum/tgs_api/v4/OnTopic(T)
+	var/list/params = params2list(T)
+	var/their_sCK = params[TGS4_INTEROP_ACCESS_IDENTIFIER]
+	if(!their_sCK)
+		return FALSE //continue world/Topic
+
+	if(their_sCK != access_identifier)
+		return "Invalid comms key!";
+
+	var/command = params[TGS4_PARAMETER_COMMAND]
+	if(!command)
+		return "No command!"
+
+	. = TGS4_RESPONSE_SUCCESS
+
+	switch(command)
+		if(TGS4_TOPIC_CHAT_COMMAND)
+			var/result = HandleCustomCommand(params[TGS4_PARAMETER_DATA])
+			if(result == null)
+				result = "Error running chat command!"
+			return result
+		if(TGS4_TOPIC_EVENT)
+			intercepted_message_queue = list()
+			var/list/event_notification = json_decode(params[TGS4_PARAMETER_DATA])
+			var/list/event_parameters = event_notification["Parameters"]
+
+			var/list/event_call = list(event_notification["Type"])
+			if(event_parameters)
+				event_call += event_parameters
+
+			if(event_handler != null)
+				event_handler.HandleEvent(arglist(event_call))
+
+			. = json_encode(intercepted_message_queue)
+			intercepted_message_queue = null
+			return
+		if(TGS4_TOPIC_INTEROP_RESPONSE)
+			last_interop_response = json_decode(params[TGS4_PARAMETER_DATA])
+			return
+		if(TGS4_TOPIC_CHANGE_PORT)
+			var/new_port = text2num(params[TGS4_PARAMETER_DATA])
+			if (!(new_port > 0))
+				return "Invalid port: [new_port]"
+
+			//the topic still completes, miraculously
+			//I honestly didn't believe byond could do it
+			if(event_handler != null)
+				event_handler.HandleEvent(TGS_EVENT_PORT_SWAP, new_port)
+			if(!world.OpenPort(new_port))
+				return "Port change failed!"
+			return
+		if(TGS4_TOPIC_CHANGE_REBOOT_MODE)
+			var/new_reboot_mode = text2num(params[TGS4_PARAMETER_DATA])
+			if(event_handler != null)
+				event_handler.HandleEvent(TGS_EVENT_REBOOT_MODE_CHANGE, reboot_mode, new_reboot_mode)
+			reboot_mode = new_reboot_mode
+			return
+
+	return "Unknown command: [command]"
+
+/datum/tgs_api/v4/proc/Export(command, list/data, override_requesting_new_port = FALSE)
+	if(!data)
+		data = list()
+	data[TGS4_PARAMETER_COMMAND] = command
+	var/json = json_encode(data)
+
+	while(requesting_new_port && !override_requesting_new_port)
+		sleep(1)
+
+	//we need some port open at this point to facilitate return communication
+	if(!world.port)
+		requesting_new_port = TRUE
+		if(!world.OpenPort(0)) //open any port
+			TGS_ERROR_LOG("Unable to open random port to retrieve new port![TGS4_PORT_CRITFAIL_MESSAGE]")
+			TerminateWorld()
+
+		//request a new port
+		export_lock = FALSE
+		var/list/new_port_json = Export(TGS4_COMM_NEW_PORT, list(TGS4_PARAMETER_DATA = "[world.port]"), TRUE) //stringify this on purpose
+
+		if(!new_port_json)
+			TGS_ERROR_LOG("No new port response from server![TGS4_PORT_CRITFAIL_MESSAGE]")
+			TerminateWorld()
+
+		var/new_port = new_port_json[TGS4_PARAMETER_DATA]
+		if(!isnum(new_port) || new_port <= 0)
+			TGS_ERROR_LOG("Malformed new port json ([json_encode(new_port_json)])![TGS4_PORT_CRITFAIL_MESSAGE]")
+			TerminateWorld()
+
+		if(new_port != world.port && !world.OpenPort(new_port))
+			TGS_ERROR_LOG("Unable to open port [new_port]![TGS4_PORT_CRITFAIL_MESSAGE]")
+			TerminateWorld()
+		requesting_new_port = FALSE
+
+	while(export_lock)
+		sleep(1)
+	export_lock = TRUE
+
+	last_interop_response = null
+	fdel(server_commands_json_path)
+	text2file(json, server_commands_json_path)
+
+	for(var/I = 0; I < EXPORT_TIMEOUT_DS && !last_interop_response; ++I)
+		sleep(1)
+
+	if(!last_interop_response)
+		TGS_ERROR_LOG("Failed to get export result for: [json]")
+	else
+		. = last_interop_response
+
+	export_lock = FALSE
+
+/datum/tgs_api/v4/OnReboot()
+	var/list/result = Export(TGS4_COMM_WORLD_REBOOT)
+	if(!result)
+		return
+
+	//okay so the standard TGS4 proceedure is: right before rebooting change the port to whatever was sent to us in the above json's data parameter
+
+	var/port = result[TGS4_PARAMETER_DATA]
+	if(!isnum(port))
+		return //this is valid, server may just want use to reboot
+
+	if(port == 0)
+		//to byond 0 means any port and "none" means close vOv
+		port = "none"
+
+	if(!world.OpenPort(port))
+		TGS_ERROR_LOG("Unable to set port to [port]!")
+
+/datum/tgs_api/v4/InstanceName()
+	return instance_name
+
+/datum/tgs_api/v4/TestMerges()
+	return cached_test_merges.Copy()
+
+/datum/tgs_api/v4/EndProcess()
+	Export(TGS4_COMM_END_PROCESS)
+
+/datum/tgs_api/v4/Revision()
+	return cached_revision
+
+/datum/tgs_api/v4/ChatBroadcast(datum/tgs_message_content/message, list/channels)
+	var/list/ids
+	if(length(channels))
+		ids = list()
+		for(var/I in channels)
+			var/datum/tgs_chat_channel/channel = I
+			ids += channel.id
+
+	message = UpgradeDeprecatedChatMessage(message)
+
+	if (!length(channels))
+		return
+
+	message = list("message" = message.text, "channelIds" = ids)
+	if(intercepted_message_queue)
+		intercepted_message_queue += list(message)
+	else
+		Export(TGS4_COMM_CHAT, message)
+
+/datum/tgs_api/v4/ChatTargetedBroadcast(datum/tgs_message_content/message, admin_only)
+	var/list/channels = list()
+	for(var/I in ChatChannelInfo())
+		var/datum/tgs_chat_channel/channel = I
+		if (!channel.is_private_channel && ((channel.is_admin_channel && admin_only) || (!channel.is_admin_channel && !admin_only)))
+			channels += channel.id
+
+	message = UpgradeDeprecatedChatMessage(message)
+
+	if (!length(channels))
+		return
+
+	message = list("message" = message.text, "channelIds" = channels)
+	if(intercepted_message_queue)
+		intercepted_message_queue += list(message)
+	else
+		Export(TGS4_COMM_CHAT, message)
+
+/datum/tgs_api/v4/ChatPrivateMessage(datum/tgs_message_content/message, datum/tgs_chat_user/user)
+	message = UpgradeDeprecatedChatMessage(message)
+	message = list("message" = message.text, "channelIds" = list(user.channel.id))
+	if(intercepted_message_queue)
+		intercepted_message_queue += list(message)
+	else
+		Export(TGS4_COMM_CHAT, message)
+
+/datum/tgs_api/v4/ChatChannelInfo()
+	. = list()
+	//no caching cause tgs may change this
+	var/list/json = json_decode(file2text(chat_channels_json_path))
+	for(var/I in json)
+		. += DecodeChannel(I)
+
+/datum/tgs_api/v4/proc/DecodeChannel(channel_json)
+	var/datum/tgs_chat_channel/channel = new
+	channel.id = channel_json["id"]
+	channel.friendly_name = channel_json["friendlyName"]
+	channel.connection_name = channel_json["connectionName"]
+	channel.is_admin_channel = channel_json["isAdminChannel"]
+	channel.is_private_channel = channel_json["isPrivateChannel"]
+	channel.custom_tag = channel_json["tag"]
+	return channel
+
+/datum/tgs_api/v4/SecurityLevel()
+	return security_level
diff --git a/code/modules/tgs/v4/commands.dm b/code/modules/tgs/v4/commands.dm
new file mode 100644
index 00000000..e9ff27d4
--- /dev/null
+++ b/code/modules/tgs/v4/commands.dm
@@ -0,0 +1,44 @@
+/datum/tgs_api/v4/proc/ListCustomCommands()
+	var/results = list()
+	custom_commands = list()
+	for(var/I in typesof(/datum/tgs_chat_command) - /datum/tgs_chat_command)
+		var/datum/tgs_chat_command/stc = new I
+		if(stc.ignore_type == I)
+			continue
+
+		var/command_name = stc.name
+		if(!command_name || findtext(command_name, " ") || findtext(command_name, "'") || findtext(command_name, "\""))
+			TGS_ERROR_LOG("Custom command [command_name] ([I]) can't be used as it is empty or contains illegal characters!")
+			continue
+
+		if(results[command_name])
+			var/datum/other = custom_commands[command_name]
+			TGS_ERROR_LOG("Custom commands [other.type] and [I] have the same name (\"[command_name]\"), only [other.type] will be available!")
+			continue
+		results += list(list("name" = command_name, "help_text" = stc.help_text, "admin_only" = stc.admin_only))
+		custom_commands[command_name] = stc
+
+	var/commands_file = chat_commands_json_path
+	if(!commands_file)
+		return
+	text2file(json_encode(results), commands_file)
+
+/datum/tgs_api/v4/proc/HandleCustomCommand(command_json)
+	var/list/data = json_decode(command_json)
+	var/command = data["command"]
+	var/user = data["user"]
+	var/params = data["params"]
+
+	var/datum/tgs_chat_user/u = new
+	u.id = user["id"]
+	u.friendly_name = user["friendlyName"]
+	u.mention = user["mention"]
+	u.channel = DecodeChannel(user["channel"])
+
+	var/datum/tgs_chat_command/sc = custom_commands[command]
+	if(sc)
+		var/datum/tgs_message_content/result = sc.Run(u, params)
+		result = UpgradeDeprecatedCommandResponse(result, command)
+
+		return result ? result.text : TRUE
+	return "Unknown command: [command]!"
diff --git a/code/modules/tgs/v5/__interop_version.dm b/code/modules/tgs/v5/__interop_version.dm
new file mode 100644
index 00000000..cafe74bb
--- /dev/null
+++ b/code/modules/tgs/v5/__interop_version.dm
@@ -0,0 +1 @@
+"5.8.0"
diff --git a/code/modules/tgs/v5/_defines.dm b/code/modules/tgs/v5/_defines.dm
new file mode 100644
index 00000000..de8b1389
--- /dev/null
+++ b/code/modules/tgs/v5/_defines.dm
@@ -0,0 +1,118 @@
+#define DMAPI5_PARAM_SERVER_PORT "tgs_port"
+#define DMAPI5_PARAM_ACCESS_IDENTIFIER "tgs_key"
+
+#define DMAPI5_BRIDGE_DATA "data"
+#define DMAPI5_TOPIC_DATA "tgs_data"
+
+#define DMAPI5_BRIDGE_REQUEST_LIMIT 8198
+#define DMAPI5_TOPIC_REQUEST_LIMIT 65528
+#define DMAPI5_TOPIC_RESPONSE_LIMIT 65529
+
+#define DMAPI5_BRIDGE_COMMAND_STARTUP 1
+#define DMAPI5_BRIDGE_COMMAND_PRIME 2
+#define DMAPI5_BRIDGE_COMMAND_REBOOT 3
+#define DMAPI5_BRIDGE_COMMAND_KILL 4
+#define DMAPI5_BRIDGE_COMMAND_CHAT_SEND 5
+#define DMAPI5_BRIDGE_COMMAND_CHUNK 6
+
+#define DMAPI5_PARAMETER_ACCESS_IDENTIFIER "accessIdentifier"
+#define DMAPI5_PARAMETER_CUSTOM_COMMANDS "customCommands"
+#define DMAPI5_PARAMETER_TOPIC_PORT "topicPort"
+
+#define DMAPI5_CHUNK "chunk"
+#define DMAPI5_CHUNK_PAYLOAD "payload"
+#define DMAPI5_CHUNK_TOTAL "totalChunks"
+#define DMAPI5_CHUNK_SEQUENCE_ID "sequenceId"
+#define DMAPI5_CHUNK_PAYLOAD_ID "payloadId"
+
+#define DMAPI5_MISSING_CHUNKS "missingChunks"
+
+#define DMAPI5_RESPONSE_ERROR_MESSAGE "errorMessage"
+
+#define DMAPI5_BRIDGE_PARAMETER_COMMAND_TYPE "commandType"
+#define DMAPI5_BRIDGE_PARAMETER_CURRENT_PORT "currentPort"
+#define DMAPI5_BRIDGE_PARAMETER_VERSION "version"
+#define DMAPI5_BRIDGE_PARAMETER_CHAT_MESSAGE "chatMessage"
+#define DMAPI5_BRIDGE_PARAMETER_MINIMUM_SECURITY_LEVEL "minimumSecurityLevel"
+
+#define DMAPI5_BRIDGE_RESPONSE_NEW_PORT "newPort"
+#define DMAPI5_BRIDGE_RESPONSE_RUNTIME_INFORMATION "runtimeInformation"
+
+#define DMAPI5_CHAT_MESSAGE_CHANNEL_IDS "channelIds"
+
+#define DMAPI5_RUNTIME_INFORMATION_ACCESS_IDENTIFIER "accessIdentifier"
+#define DMAPI5_RUNTIME_INFORMATION_SERVER_VERSION "serverVersion"
+#define DMAPI5_RUNTIME_INFORMATION_SERVER_PORT "serverPort"
+#define DMAPI5_RUNTIME_INFORMATION_API_VALIDATE_ONLY "apiValidateOnly"
+#define DMAPI5_RUNTIME_INFORMATION_INSTANCE_NAME "instanceName"
+#define DMAPI5_RUNTIME_INFORMATION_REVISION "revision"
+#define DMAPI5_RUNTIME_INFORMATION_TEST_MERGES "testMerges"
+#define DMAPI5_RUNTIME_INFORMATION_SECURITY_LEVEL "securityLevel"
+#define DMAPI5_RUNTIME_INFORMATION_VISIBILITY "visibility"
+
+#define DMAPI5_CHAT_UPDATE_CHANNELS "channels"
+
+#define DMAPI5_TEST_MERGE_TIME_MERGED "timeMerged"
+#define DMAPI5_TEST_MERGE_REVISION "revision"
+#define DMAPI5_TEST_MERGE_TITLE_AT_MERGE "titleAtMerge"
+#define DMAPI5_TEST_MERGE_BODY_AT_MERGE "bodyAtMerge"
+#define DMAPI5_TEST_MERGE_URL "url"
+#define DMAPI5_TEST_MERGE_AUTHOR "author"
+#define DMAPI5_TEST_MERGE_NUMBER "number"
+#define DMAPI5_TEST_MERGE_PULL_REQUEST_REVISION "pullRequestRevision"
+#define DMAPI5_TEST_MERGE_COMMENT "comment"
+
+#define DMAPI5_CHAT_COMMAND_NAME "name"
+#define DMAPI5_CHAT_COMMAND_PARAMS "params"
+#define DMAPI5_CHAT_COMMAND_USER "user"
+
+#define DMAPI5_EVENT_NOTIFICATION_TYPE "type"
+#define DMAPI5_EVENT_NOTIFICATION_PARAMETERS "parameters"
+
+#define DMAPI5_TOPIC_COMMAND_CHAT_COMMAND 0
+#define DMAPI5_TOPIC_COMMAND_EVENT_NOTIFICATION 1
+#define DMAPI5_TOPIC_COMMAND_CHANGE_PORT 2
+#define DMAPI5_TOPIC_COMMAND_CHANGE_REBOOT_STATE 3
+#define DMAPI5_TOPIC_COMMAND_INSTANCE_RENAMED 4
+#define DMAPI5_TOPIC_COMMAND_CHAT_CHANNELS_UPDATE 5
+#define DMAPI5_TOPIC_COMMAND_SERVER_PORT_UPDATE 6
+#define DMAPI5_TOPIC_COMMAND_HEALTHCHECK 7
+#define DMAPI5_TOPIC_COMMAND_WATCHDOG_REATTACH 8
+#define DMAPI5_TOPIC_COMMAND_SEND_CHUNK 9
+#define DMAPI5_TOPIC_COMMAND_RECEIVE_CHUNK 10
+#define DMAPI5_TOPIC_COMMAND_RECEIVE_BROADCAST 11
+
+#define DMAPI5_TOPIC_PARAMETER_COMMAND_TYPE "commandType"
+#define DMAPI5_TOPIC_PARAMETER_CHAT_COMMAND "chatCommand"
+#define DMAPI5_TOPIC_PARAMETER_EVENT_NOTIFICATION "eventNotification"
+#define DMAPI5_TOPIC_PARAMETER_NEW_PORT "newPort"
+#define DMAPI5_TOPIC_PARAMETER_NEW_REBOOT_STATE "newRebootState"
+#define DMAPI5_TOPIC_PARAMETER_NEW_INSTANCE_NAME "newInstanceName"
+#define DMAPI5_TOPIC_PARAMETER_CHAT_UPDATE "chatUpdate"
+#define DMAPI5_TOPIC_PARAMETER_NEW_SERVER_VERSION "newServerVersion"
+#define DMAPI5_TOPIC_PARAMETER_BROADCAST_MESSAGE "broadcastMessage"
+
+#define DMAPI5_TOPIC_RESPONSE_COMMAND_RESPONSE "commandResponse"
+#define DMAPI5_TOPIC_RESPONSE_COMMAND_RESPONSE_MESSAGE "commandResponseMessage"
+#define DMAPI5_TOPIC_RESPONSE_CHAT_RESPONSES "chatResponses"
+
+#define DMAPI5_REVISION_INFORMATION_COMMIT_SHA "commitSha"
+#define DMAPI5_REVISION_INFORMATION_TIMESTAMP "timestamp"
+#define DMAPI5_REVISION_INFORMATION_ORIGIN_COMMIT_SHA "originCommitSha"
+
+#define DMAPI5_CHAT_USER_ID "id"
+#define DMAPI5_CHAT_USER_FRIENDLY_NAME "friendlyName"
+#define DMAPI5_CHAT_USER_MENTION "mention"
+#define DMAPI5_CHAT_USER_CHANNEL "channel"
+
+#define DMAPI5_CHAT_CHANNEL_ID "id"
+#define DMAPI5_CHAT_CHANNEL_FRIENDLY_NAME "friendlyName"
+#define DMAPI5_CHAT_CHANNEL_CONNECTION_NAME "connectionName"
+#define DMAPI5_CHAT_CHANNEL_IS_ADMIN_CHANNEL "isAdminChannel"
+#define DMAPI5_CHAT_CHANNEL_IS_PRIVATE_CHANNEL "isPrivateChannel"
+#define DMAPI5_CHAT_CHANNEL_TAG "tag"
+#define DMAPI5_CHAT_CHANNEL_EMBEDS_SUPPORTED "embedsSupported"
+
+#define DMAPI5_CUSTOM_CHAT_COMMAND_NAME "name"
+#define DMAPI5_CUSTOM_CHAT_COMMAND_HELP_TEXT "helpText"
+#define DMAPI5_CUSTOM_CHAT_COMMAND_ADMIN_ONLY "adminOnly"
diff --git a/code/modules/tgs/v5/api.dm b/code/modules/tgs/v5/api.dm
new file mode 100644
index 00000000..25e00aed
--- /dev/null
+++ b/code/modules/tgs/v5/api.dm
@@ -0,0 +1,281 @@
+/datum/tgs_api/v5
+	var/server_port
+	var/access_identifier
+
+	var/instance_name
+	var/security_level
+	var/visibility
+
+	var/reboot_mode = TGS_REBOOT_MODE_NORMAL
+
+	/// List of chat messages list()s that attempted to be sent during a topic call. To be bundled in the result of the call
+	var/list/intercepted_message_queue
+
+	/// List of chat messages list()s that attempted to be sent during a topic call. To be bundled in the result of the call
+	var/list/offline_message_queue
+
+	var/list/custom_commands
+
+	var/list/test_merges
+	var/datum/tgs_revision_information/revision
+	var/list/chat_channels
+
+	var/initialized = FALSE
+	var/initial_bridge_request_received = FALSE
+	var/datum/tgs_version/interop_version
+
+	var/chunked_requests = 0
+	var/list/chunked_topics = list()
+
+	var/detached = FALSE
+
+/datum/tgs_api/v5/New()
+	. = ..()
+	interop_version = version
+	TGS_DEBUG_LOG("V5 API created: [json_encode(args)]")
+
+/datum/tgs_api/v5/ApiVersion()
+	return new /datum/tgs_version(
+		#include "__interop_version.dm"
+	)
+
+/datum/tgs_api/v5/OnWorldNew(minimum_required_security_level)
+	TGS_DEBUG_LOG("OnWorldNew()")
+	server_port = world.params[DMAPI5_PARAM_SERVER_PORT]
+	access_identifier = world.params[DMAPI5_PARAM_ACCESS_IDENTIFIER]
+
+	var/datum/tgs_version/api_version = ApiVersion()
+	version = null // we want this to be the TGS version, not the interop version
+	var/list/bridge_response = Bridge(DMAPI5_BRIDGE_COMMAND_STARTUP, list(DMAPI5_BRIDGE_PARAMETER_MINIMUM_SECURITY_LEVEL = minimum_required_security_level, DMAPI5_BRIDGE_PARAMETER_VERSION = api_version.raw_parameter, DMAPI5_PARAMETER_CUSTOM_COMMANDS = ListCustomCommands(), DMAPI5_PARAMETER_TOPIC_PORT = GetTopicPort()))
+	if(!istype(bridge_response))
+		TGS_ERROR_LOG("Failed initial bridge request!")
+		return FALSE
+
+	var/list/runtime_information = bridge_response[DMAPI5_BRIDGE_RESPONSE_RUNTIME_INFORMATION]
+	if(!istype(runtime_information))
+		TGS_ERROR_LOG("Failed to decode runtime information from bridge response: [json_encode(bridge_response)]!")
+		return FALSE
+
+	if(runtime_information[DMAPI5_RUNTIME_INFORMATION_API_VALIDATE_ONLY])
+		TGS_INFO_LOG("DMAPI validation, exiting...")
+		TerminateWorld()
+
+	initial_bridge_request_received = TRUE
+	version = new /datum/tgs_version(runtime_information[DMAPI5_RUNTIME_INFORMATION_SERVER_VERSION]) // reassigning this because it can change if TGS updates
+	security_level = runtime_information[DMAPI5_RUNTIME_INFORMATION_SECURITY_LEVEL]
+	visibility = runtime_information[DMAPI5_RUNTIME_INFORMATION_VISIBILITY]
+	instance_name = runtime_information[DMAPI5_RUNTIME_INFORMATION_INSTANCE_NAME]
+
+	var/list/revisionData = runtime_information[DMAPI5_RUNTIME_INFORMATION_REVISION]
+	if(istype(revisionData))
+		revision = new
+		revision.commit = revisionData[DMAPI5_REVISION_INFORMATION_COMMIT_SHA]
+		revision.timestamp = revisionData[DMAPI5_REVISION_INFORMATION_TIMESTAMP]
+		revision.origin_commit = revisionData[DMAPI5_REVISION_INFORMATION_ORIGIN_COMMIT_SHA]
+	else
+		TGS_ERROR_LOG("Failed to decode [DMAPI5_RUNTIME_INFORMATION_REVISION] from runtime information!")
+
+	test_merges = list()
+	var/list/test_merge_json = runtime_information[DMAPI5_RUNTIME_INFORMATION_TEST_MERGES]
+	if(istype(test_merge_json))
+		for(var/entry in test_merge_json)
+			var/datum/tgs_revision_information/test_merge/tm = new
+			tm.number = entry[DMAPI5_TEST_MERGE_NUMBER]
+
+			var/list/revInfo = entry[DMAPI5_TEST_MERGE_REVISION]
+			if(revInfo)
+				tm.commit = revisionData[DMAPI5_REVISION_INFORMATION_COMMIT_SHA]
+				tm.origin_commit = revisionData[DMAPI5_REVISION_INFORMATION_ORIGIN_COMMIT_SHA]
+				tm.timestamp = entry[DMAPI5_REVISION_INFORMATION_TIMESTAMP]
+			else
+				TGS_WARNING_LOG("Failed to decode [DMAPI5_TEST_MERGE_REVISION] from test merge #[tm.number]!")
+
+			if(!tm.timestamp)
+				tm.timestamp = entry[DMAPI5_TEST_MERGE_TIME_MERGED]
+
+			tm.title = entry[DMAPI5_TEST_MERGE_TITLE_AT_MERGE]
+			tm.body = entry[DMAPI5_TEST_MERGE_BODY_AT_MERGE]
+			tm.url = entry[DMAPI5_TEST_MERGE_URL]
+			tm.author = entry[DMAPI5_TEST_MERGE_AUTHOR]
+			tm.head_commit = entry[DMAPI5_TEST_MERGE_PULL_REQUEST_REVISION]
+			tm.comment = entry[DMAPI5_TEST_MERGE_COMMENT]
+
+			test_merges += tm
+	else
+		TGS_WARNING_LOG("Failed to decode [DMAPI5_RUNTIME_INFORMATION_TEST_MERGES] from runtime information!")
+
+	chat_channels = list()
+	DecodeChannels(runtime_information)
+
+	initialized = TRUE
+	return TRUE
+
+/datum/tgs_api/v5/proc/GetTopicPort()
+#if defined(OPENDREAM) && defined(OPENDREAM_TOPIC_PORT_EXISTS)
+	return "[world.opendream_topic_port]"
+#else
+	return null
+#endif
+
+/datum/tgs_api/v5/proc/RequireInitialBridgeResponse()
+	TGS_DEBUG_LOG("RequireInitialBridgeResponse()")
+	var/logged = FALSE
+	while(!initial_bridge_request_received)
+		if(!logged)
+			TGS_DEBUG_LOG("RequireInitialBridgeResponse: Starting sleep")
+			logged = TRUE
+
+		sleep(1)
+
+	TGS_DEBUG_LOG("RequireInitialBridgeResponse: Passed")
+
+/datum/tgs_api/v5/OnInitializationComplete()
+	Bridge(DMAPI5_BRIDGE_COMMAND_PRIME)
+
+/datum/tgs_api/v5/OnTopic(T)
+	TGS_DEBUG_LOG("OnTopic()")
+	RequireInitialBridgeResponse()
+	TGS_DEBUG_LOG("OnTopic passed bridge request gate")
+	var/list/params = params2list(T)
+	var/json = params[DMAPI5_TOPIC_DATA]
+	if(!json)
+		TGS_DEBUG_LOG("No \"[DMAPI5_TOPIC_DATA]\" entry found, ignoring...")
+		return FALSE // continue to /world/Topic
+
+	if(!initialized)
+		TGS_WARNING_LOG("Missed topic due to not being initialized: [json]")
+		return TRUE // too early to handle, but it's still our responsibility
+
+	return ProcessTopicJson(json, TRUE)
+
+/datum/tgs_api/v5/OnReboot()
+	var/list/result = Bridge(DMAPI5_BRIDGE_COMMAND_REBOOT)
+	if(!result)
+		return
+
+	//okay so the standard TGS proceedure is: right before rebooting change the port to whatever was sent to us in the above json's data parameter
+
+	var/port = result[DMAPI5_BRIDGE_RESPONSE_NEW_PORT]
+	if(!isnum(port))
+		return //this is valid, server may just want use to reboot
+
+	if(port == 0)
+		//to byond 0 means any port and "none" means close vOv
+		port = "none"
+
+	if(!world.OpenPort(port))
+		TGS_ERROR_LOG("Unable to set port to [port]!")
+
+/datum/tgs_api/v5/InstanceName()
+	RequireInitialBridgeResponse()
+	return instance_name
+
+/datum/tgs_api/v5/TestMerges()
+	RequireInitialBridgeResponse()
+	return test_merges.Copy()
+
+/datum/tgs_api/v5/EndProcess()
+	Bridge(DMAPI5_BRIDGE_COMMAND_KILL)
+
+/datum/tgs_api/v5/Revision()
+	RequireInitialBridgeResponse()
+	return revision
+
+// Common proc b/c it's used by the V3/V4 APIs
+/datum/tgs_api/proc/UpgradeDeprecatedChatMessage(datum/tgs_message_content/message)
+	if(!istext(message))
+		return message
+
+	TGS_WARNING_LOG("Received legacy string when a [/datum/tgs_message_content] was expected. Please audit all calls to TgsChatBroadcast, TgsChatTargetedBroadcast, and TgsChatPrivateMessage to ensure they use the new /datum.")
+	return new /datum/tgs_message_content(message)
+
+/datum/tgs_api/v5/ChatBroadcast(datum/tgs_message_content/message2, list/channels)
+	if(!length(channels))
+		channels = ChatChannelInfo()
+
+	var/list/ids = list()
+	for(var/I in channels)
+		var/datum/tgs_chat_channel/channel = I
+		ids += channel.id
+
+	SendChatMessageRaw(message2, ids)
+
+/datum/tgs_api/v5/ChatTargetedBroadcast(datum/tgs_message_content/message2, admin_only)
+	var/list/channels = list()
+	for(var/I in ChatChannelInfo())
+		var/datum/tgs_chat_channel/channel = I
+		if (!channel.is_private_channel && ((channel.is_admin_channel && admin_only) || (!channel.is_admin_channel && !admin_only)))
+			channels += channel.id
+
+	SendChatMessageRaw(message2, channels)
+
+/datum/tgs_api/v5/ChatPrivateMessage(datum/tgs_message_content/message2, datum/tgs_chat_user/user)
+	SendChatMessageRaw(message2, list(user.channel.id))
+
+/datum/tgs_api/v5/proc/SendChatMessageRaw(datum/tgs_message_content/message2, list/channel_ids)
+	message2 = UpgradeDeprecatedChatMessage(message2)
+
+	if (!length(channel_ids))
+		return
+
+	var/list/data = message2._interop_serialize()
+	data[DMAPI5_CHAT_MESSAGE_CHANNEL_IDS] = channel_ids
+	if(intercepted_message_queue)
+		intercepted_message_queue += list(data)
+		return
+
+	if(offline_message_queue)
+		offline_message_queue += list(data)
+		return
+
+	if(detached)
+		offline_message_queue = list(data)
+
+		WaitForReattach(FALSE)
+
+		data = offline_message_queue
+		offline_message_queue = null
+
+		for(var/queued_message in data)
+			SendChatDataRaw(queued_message)
+	else
+		SendChatDataRaw(data)
+
+/datum/tgs_api/v5/proc/SendChatDataRaw(list/data)
+	Bridge(DMAPI5_BRIDGE_COMMAND_CHAT_SEND, list(DMAPI5_BRIDGE_PARAMETER_CHAT_MESSAGE = data))
+
+/datum/tgs_api/v5/ChatChannelInfo()
+	RequireInitialBridgeResponse()
+	WaitForReattach(TRUE)
+	return chat_channels.Copy()
+
+/datum/tgs_api/v5/proc/DecodeChannels(chat_update_json)
+	TGS_DEBUG_LOG("DecodeChannels()")
+	var/list/chat_channels_json = chat_update_json[DMAPI5_CHAT_UPDATE_CHANNELS]
+	if(istype(chat_channels_json))
+		chat_channels.Cut()
+		for(var/channel_json in chat_channels_json)
+			var/datum/tgs_chat_channel/channel = DecodeChannel(channel_json)
+			if(channel)
+				chat_channels += channel
+	else
+		TGS_WARNING_LOG("Failed to decode [DMAPI5_CHAT_UPDATE_CHANNELS] from channel update!")
+
+/datum/tgs_api/v5/proc/DecodeChannel(channel_json)
+	var/datum/tgs_chat_channel/channel = new
+	channel.id = channel_json[DMAPI5_CHAT_CHANNEL_ID]
+	channel.friendly_name = channel_json[DMAPI5_CHAT_CHANNEL_FRIENDLY_NAME]
+	channel.connection_name = channel_json[DMAPI5_CHAT_CHANNEL_CONNECTION_NAME]
+	channel.is_admin_channel = channel_json[DMAPI5_CHAT_CHANNEL_IS_ADMIN_CHANNEL]
+	channel.is_private_channel = channel_json[DMAPI5_CHAT_CHANNEL_IS_PRIVATE_CHANNEL]
+	channel.custom_tag = channel_json[DMAPI5_CHAT_CHANNEL_TAG]
+	channel.embeds_supported = channel_json[DMAPI5_CHAT_CHANNEL_EMBEDS_SUPPORTED]
+	return channel
+
+/datum/tgs_api/v5/SecurityLevel()
+	RequireInitialBridgeResponse()
+	return security_level
+
+/datum/tgs_api/v5/Visibility()
+	RequireInitialBridgeResponse()
+	return visibility
diff --git a/code/modules/tgs/v5/bridge.dm b/code/modules/tgs/v5/bridge.dm
new file mode 100644
index 00000000..a261f8a0
--- /dev/null
+++ b/code/modules/tgs/v5/bridge.dm
@@ -0,0 +1,106 @@
+/datum/tgs_api/v5/proc/Bridge(command, list/data)
+	if(!data)
+		data = list()
+
+	var/single_bridge_request = CreateBridgeRequest(command, data)
+	if(length(single_bridge_request) <= DMAPI5_BRIDGE_REQUEST_LIMIT)
+		return PerformBridgeRequest(single_bridge_request)
+
+	// chunking required
+	var/payload_id = ++chunked_requests
+
+	var/raw_data = CreateBridgeData(command, data, FALSE)
+
+	var/list/chunk_requests = GenerateChunks(raw_data, TRUE)
+
+	var/list/response
+	for(var/bridge_request in chunk_requests)
+		response = PerformBridgeRequest(bridge_request)
+		if(!response)
+			// Abort
+			return
+
+	var/list/missing_sequence_ids = response[DMAPI5_MISSING_CHUNKS]
+	if(length(missing_sequence_ids))
+		do
+			TGS_WARNING_LOG("Server is still missing some chunks of bridge P[payload_id]! Sending missing chunks...")
+			if(!istype(missing_sequence_ids))
+				TGS_ERROR_LOG("Did not receive a list() for [DMAPI5_MISSING_CHUNKS]!")
+				return
+
+			for(var/missing_sequence_id in missing_sequence_ids)
+				if(!isnum(missing_sequence_id))
+					TGS_ERROR_LOG("Did not receive a num in [DMAPI5_MISSING_CHUNKS]!")
+					return
+
+				var/missing_chunk_request = chunk_requests[missing_sequence_id + 1]
+				response = PerformBridgeRequest(missing_chunk_request)
+				if(!response)
+					// Abort
+					return
+
+			missing_sequence_ids = response[DMAPI5_MISSING_CHUNKS]
+		while(length(missing_sequence_ids))
+
+	return response
+
+/datum/tgs_api/v5/proc/CreateBridgeRequest(command, list/data)
+	var/json = CreateBridgeData(command, data, TRUE)
+	var/encoded_json = url_encode(json)
+
+	var/api_prefix = interop_version.minor >= 8 ? "api/" : ""
+
+	var/url = "http://127.0.0.1:[server_port]/[api_prefix]Bridge?[DMAPI5_BRIDGE_DATA]=[encoded_json]"
+	return url
+
+/datum/tgs_api/v5/proc/CreateBridgeData(command, list/data, needs_auth)
+	data[DMAPI5_BRIDGE_PARAMETER_COMMAND_TYPE] = command
+	if(needs_auth)
+		data[DMAPI5_PARAMETER_ACCESS_IDENTIFIER] = access_identifier
+
+	var/json = json_encode(data)
+	return json
+
+/datum/tgs_api/v5/proc/WaitForReattach(require_channels = FALSE)
+	if(detached)
+		// Wait up to one minute
+		for(var/i in 1 to 600)
+			sleep(1)
+			if(!detached && (!require_channels || length(chat_channels)))
+				break
+
+			// dad went out for milk and cigarettes 20 years ago...
+			// yes, this affects all other waiters, intentional
+			if(i == 600)
+				detached = FALSE
+
+/datum/tgs_api/v5/proc/PerformBridgeRequest(bridge_request)
+	WaitForReattach(FALSE)
+
+	// This is an infinite sleep until we get a response
+	var/export_response = world.Export(bridge_request)
+	if(!export_response)
+		TGS_ERROR_LOG("Failed bridge request: [bridge_request]")
+		return
+
+	var/content = export_response["CONTENT"]
+	if(!content)
+		TGS_ERROR_LOG("Failed bridge request, missing content!")
+		return
+
+	var/response_json = file2text(content)
+	if(!response_json)
+		TGS_ERROR_LOG("Failed bridge request, failed to load content!")
+		return
+
+	var/list/bridge_response = json_decode(response_json)
+	if(!bridge_response)
+		TGS_ERROR_LOG("Failed bridge request, bad json: [response_json]")
+		return
+
+	var/error = bridge_response[DMAPI5_RESPONSE_ERROR_MESSAGE]
+	if(error)
+		TGS_ERROR_LOG("Failed bridge request, bad request: [error]")
+		return
+
+	return bridge_response
diff --git a/code/modules/tgs/v5/chunking.dm b/code/modules/tgs/v5/chunking.dm
new file mode 100644
index 00000000..167a124b
--- /dev/null
+++ b/code/modules/tgs/v5/chunking.dm
@@ -0,0 +1,43 @@
+/datum/tgs_api/v5/proc/GenerateChunks(payload, bridge)
+	var/limit = bridge ? DMAPI5_BRIDGE_REQUEST_LIMIT : DMAPI5_TOPIC_RESPONSE_LIMIT
+
+	var/payload_id = ++chunked_requests
+	var/data_length = length(payload)
+
+	var/chunk_count
+	var/list/chunk_requests
+	for(chunk_count = 2; !chunk_requests; ++chunk_count)
+		var/max_chunk_size = -round(-(data_length / chunk_count))
+		if(max_chunk_size > limit)
+			continue
+
+		chunk_requests = list()
+		for(var/i in 1 to chunk_count)
+			var/start_index = 1 + ((i - 1) * max_chunk_size)
+			if (start_index > data_length)
+				break
+
+			var/end_index = min(1 + (i * max_chunk_size), data_length + 1)
+
+			var/chunk_payload = copytext(payload, start_index, end_index)
+
+			// sequence IDs in interop chunking are always zero indexed
+			var/list/chunk = list(DMAPI5_CHUNK_PAYLOAD_ID = payload_id, DMAPI5_CHUNK_SEQUENCE_ID = (i - 1), DMAPI5_CHUNK_TOTAL = chunk_count, DMAPI5_CHUNK_PAYLOAD = chunk_payload)
+
+			var/chunk_request = list(DMAPI5_CHUNK = chunk)
+			var/chunk_length
+			if(bridge)
+				chunk_request = CreateBridgeRequest(DMAPI5_BRIDGE_COMMAND_CHUNK, chunk_request)
+				chunk_length = length(chunk_request)
+			else
+				chunk_request = list(chunk_request) // wrap for adding to list
+				chunk_length = length(json_encode(chunk_request))
+
+			if(chunk_length > limit)
+				// Screwed by encoding, no way to preempt it though
+				chunk_requests = null
+				break
+
+			chunk_requests += chunk_request
+
+	return chunk_requests
diff --git a/code/modules/tgs/v5/commands.dm b/code/modules/tgs/v5/commands.dm
new file mode 100644
index 00000000..c3ecf825
--- /dev/null
+++ b/code/modules/tgs/v5/commands.dm
@@ -0,0 +1,60 @@
+/datum/tgs_api/v5/proc/ListCustomCommands()
+	var/results = list()
+	custom_commands = list()
+	for(var/I in typesof(/datum/tgs_chat_command) - /datum/tgs_chat_command)
+		var/datum/tgs_chat_command/stc = new I
+		if(stc.ignore_type == I)
+			continue
+
+		var/command_name = stc.name
+		if(!command_name || findtext(command_name, " ") || findtext(command_name, "'") || findtext(command_name, "\""))
+			TGS_ERROR_LOG("Custom command [command_name] ([I]) can't be used as it is empty or contains illegal characters!")
+			continue
+
+		if(results[command_name])
+			var/datum/other = custom_commands[command_name]
+			TGS_ERROR_LOG("Custom commands [other.type] and [I] have the same name (\"[command_name]\"), only [other.type] will be available!")
+			continue
+		results += list(list(DMAPI5_CUSTOM_CHAT_COMMAND_NAME = command_name, DMAPI5_CUSTOM_CHAT_COMMAND_HELP_TEXT = stc.help_text, DMAPI5_CUSTOM_CHAT_COMMAND_ADMIN_ONLY = stc.admin_only))
+		custom_commands[command_name] = stc
+
+	return results
+
+/datum/tgs_api/v5/proc/HandleCustomCommand(list/command_json)
+	var/command = command_json[DMAPI5_CHAT_COMMAND_NAME]
+	var/user = command_json[DMAPI5_CHAT_COMMAND_USER]
+	var/params = command_json[DMAPI5_CHAT_COMMAND_PARAMS]
+
+	var/datum/tgs_chat_user/u = new
+	u.id = user[DMAPI5_CHAT_USER_ID]
+	u.friendly_name = user[DMAPI5_CHAT_USER_FRIENDLY_NAME]
+	u.mention = user[DMAPI5_CHAT_USER_MENTION]
+	u.channel = DecodeChannel(user[DMAPI5_CHAT_USER_CHANNEL])
+
+	var/datum/tgs_chat_command/sc = custom_commands[command]
+	if(sc)
+		var/datum/tgs_message_content/response = sc.Run(u, params)
+		response = UpgradeDeprecatedCommandResponse(response, command)
+
+		var/list/topic_response = TopicResponse()
+		topic_response[DMAPI5_TOPIC_RESPONSE_COMMAND_RESPONSE_MESSAGE] = response ? response.text : null
+		topic_response[DMAPI5_TOPIC_RESPONSE_COMMAND_RESPONSE] = response ? response._interop_serialize() : null
+		return topic_response
+	return TopicResponse("Unknown custom chat command: [command]!")
+
+// Common proc b/c it's used by the V3/V4 APIs
+/datum/tgs_api/proc/UpgradeDeprecatedCommandResponse(datum/tgs_message_content/response, command)
+	// Backwards compatibility, used to return a string
+	if(istext(response))
+		warned_deprecated_command_runs = warned_deprecated_command_runs || list()
+		if(!warned_deprecated_command_runs[command])
+			TGS_WARNING_LOG("Custom chat command \"[command]\" is still returning a string. This behaviour is deprecated, please upgrade it to return a [/datum/tgs_message_content].")
+			warned_deprecated_command_runs[command] = TRUE
+
+		return new /datum/tgs_message_content(response)
+
+	if(!istype(response))
+		TGS_ERROR_LOG("Custom chat command \"[command]\" should return a [/datum/tgs_message_content]! Got: \"[response]\"")
+		return null
+
+	return response
diff --git a/code/modules/tgs/v5/serializers.dm b/code/modules/tgs/v5/serializers.dm
new file mode 100644
index 00000000..6782bc96
--- /dev/null
+++ b/code/modules/tgs/v5/serializers.dm
@@ -0,0 +1,59 @@
+/datum/tgs_message_content/proc/_interop_serialize()
+	return list("text" = text, "embed" = embed ? embed._interop_serialize() : null)
+
+/datum/tgs_chat_embed/proc/_interop_serialize()
+	CRASH("Base /proc/interop_serialize called on [type]!")
+
+/datum/tgs_chat_embed/structure/_interop_serialize()
+	var/list/serialized_fields
+	if(istype(fields, /list))
+		serialized_fields = list()
+		for(var/datum/tgs_chat_embed/field/field as anything in fields)
+			serialized_fields += list(field._interop_serialize())
+	return list(
+		"title" = title,
+		"description" = description,
+		"url" = url,
+		"timestamp" = timestamp,
+		"colour" = colour,
+		"image" = src.image ? src.image._interop_serialize() : null,
+		"thumbnail" = thumbnail ? thumbnail._interop_serialize() : null,
+		"video" = video ? video._interop_serialize() : null,
+		"footer" = footer ? footer._interop_serialize() : null,
+		"provider" = provider ? provider._interop_serialize() : null,
+		"author" = author ? author._interop_serialize() : null,
+		"fields" = serialized_fields
+	)
+
+/datum/tgs_chat_embed/media/_interop_serialize()
+	return list(
+		"url" = url,
+		"width" = width,
+		"height" = height,
+		"proxyUrl" = proxy_url
+	)
+
+/datum/tgs_chat_embed/provider/_interop_serialize()
+	return list(
+		"url" = url,
+		"name" = name
+	)
+
+/datum/tgs_chat_embed/provider/author/_interop_serialize()
+	. = ..()
+	.["iconUrl"] = icon_url
+	.["proxyIconUrl"] = proxy_icon_url
+
+/datum/tgs_chat_embed/footer/_interop_serialize()
+	return list(
+		"text" = text,
+		"iconUrl" = icon_url,
+		"proxyIconUrl" = proxy_icon_url
+	)
+
+/datum/tgs_chat_embed/field/_interop_serialize()
+	return list(
+		"name" = name,
+		"value" = value,
+		"isInline" = is_inline
+	)
diff --git a/code/modules/tgs/v5/topic.dm b/code/modules/tgs/v5/topic.dm
new file mode 100644
index 00000000..0a81adac
--- /dev/null
+++ b/code/modules/tgs/v5/topic.dm
@@ -0,0 +1,283 @@
+/datum/tgs_api/v5/proc/TopicResponse(error_message = null)
+	var/list/response = list()
+	if(error_message)
+		response[DMAPI5_RESPONSE_ERROR_MESSAGE] = error_message
+	return response
+
+/datum/tgs_api/v5/proc/ProcessTopicJson(json, check_access_identifier)
+	TGS_DEBUG_LOG("ProcessTopicJson(..., [check_access_identifier])")
+	var/list/result = ProcessRawTopic(json, check_access_identifier)
+	if(!result)
+		result = TopicResponse("Runtime error!")
+	else if(!length(result))
+		return "{}" // quirk of json_encode is an empty list returns "[]"
+
+	var/response_json = json_encode(result)
+	if(length(response_json) > DMAPI5_TOPIC_RESPONSE_LIMIT)
+		// cache response chunks and send the first
+		var/list/chunks = GenerateChunks(response_json, FALSE)
+		var/payload_id = chunks[1][DMAPI5_CHUNK][DMAPI5_CHUNK_PAYLOAD_ID]
+		var/cache_key = ResponseTopicChunkCacheKey(payload_id)
+
+		chunked_topics[cache_key] = chunks
+
+		response_json = json_encode(chunks[1])
+
+	return response_json
+
+/datum/tgs_api/v5/proc/ProcessRawTopic(json, check_access_identifier)
+	TGS_DEBUG_LOG("ProcessRawTopic(..., [check_access_identifier])")
+	var/list/topic_parameters = json_decode(json)
+	if(!topic_parameters)
+		TGS_DEBUG_LOG("ProcessRawTopic: json_decode failed")
+		return TopicResponse("Invalid topic parameters json: [json]!");
+
+	var/their_sCK = topic_parameters[DMAPI5_PARAMETER_ACCESS_IDENTIFIER]
+	if(check_access_identifier && their_sCK != access_identifier)
+		TGS_DEBUG_LOG("ProcessRawTopic: access identifier check failed")
+		return TopicResponse("Failed to decode [DMAPI5_PARAMETER_ACCESS_IDENTIFIER] or it does not match!")
+
+	var/command = topic_parameters[DMAPI5_TOPIC_PARAMETER_COMMAND_TYPE]
+	if(!isnum(command))
+		TGS_DEBUG_LOG("ProcessRawTopic: command type check failed")
+		return TopicResponse("Failed to decode [DMAPI5_TOPIC_PARAMETER_COMMAND_TYPE]!")
+
+	return ProcessTopicCommand(command, topic_parameters)
+
+/datum/tgs_api/v5/proc/ResponseTopicChunkCacheKey(payload_id)
+	return "response[payload_id]"
+
+/datum/tgs_api/v5/proc/ProcessTopicCommand(command, list/topic_parameters)
+	TGS_DEBUG_LOG("ProcessTopicCommand([command], ...)")
+	switch(command)
+
+		if(DMAPI5_TOPIC_COMMAND_CHAT_COMMAND)
+			intercepted_message_queue = list()
+			var/list/result = HandleCustomCommand(topic_parameters[DMAPI5_TOPIC_PARAMETER_CHAT_COMMAND])
+			if(!result)
+				result = TopicResponse("Error running chat command!")
+			result[DMAPI5_TOPIC_RESPONSE_CHAT_RESPONSES] = intercepted_message_queue
+			intercepted_message_queue = null
+			return result
+
+		if(DMAPI5_TOPIC_COMMAND_EVENT_NOTIFICATION)
+			var/list/event_notification = topic_parameters[DMAPI5_TOPIC_PARAMETER_EVENT_NOTIFICATION]
+			if(!istype(event_notification))
+				return TopicResponse("Invalid [DMAPI5_TOPIC_PARAMETER_EVENT_NOTIFICATION]!")
+
+			var/event_type = event_notification[DMAPI5_EVENT_NOTIFICATION_TYPE]
+			if(!isnum(event_type))
+				return TopicResponse("Invalid or missing [DMAPI5_EVENT_NOTIFICATION_TYPE]!")
+
+			var/list/event_parameters = event_notification[DMAPI5_EVENT_NOTIFICATION_PARAMETERS]
+			if(event_parameters && !istype(event_parameters))
+				. = TopicResponse("Invalid or missing [DMAPI5_EVENT_NOTIFICATION_PARAMETERS]!")
+			else
+				var/list/response = TopicResponse()
+				. = response
+				if(event_handler != null)
+					var/list/event_call = list(event_type)
+					if(event_parameters)
+						event_call += event_parameters
+
+					intercepted_message_queue = list()
+					event_handler.HandleEvent(arglist(event_call))
+					response[DMAPI5_TOPIC_RESPONSE_CHAT_RESPONSES] = intercepted_message_queue
+					intercepted_message_queue = null
+
+			if (event_type == TGS_EVENT_WATCHDOG_DETACH)
+				detached = TRUE
+				chat_channels.Cut() // https://github.com/tgstation/tgstation-server/issues/1490
+
+			return
+
+		if(DMAPI5_TOPIC_COMMAND_CHANGE_PORT)
+			var/new_port = topic_parameters[DMAPI5_TOPIC_PARAMETER_NEW_PORT]
+			if (!isnum(new_port) || !(new_port > 0))
+				return TopicResponse("Invalid or missing [DMAPI5_TOPIC_PARAMETER_NEW_PORT]")
+
+			if(event_handler != null)
+				event_handler.HandleEvent(TGS_EVENT_PORT_SWAP, new_port)
+
+			//the topic still completes, miraculously
+			//I honestly didn't believe byond could do it without exploding
+			if(!world.OpenPort(new_port))
+				return TopicResponse("Port change failed!")
+
+			return TopicResponse()
+
+		if(DMAPI5_TOPIC_COMMAND_CHANGE_REBOOT_STATE)
+			var/new_reboot_mode = topic_parameters[DMAPI5_TOPIC_PARAMETER_NEW_REBOOT_STATE]
+			if(!isnum(new_reboot_mode))
+				return TopicResponse("Invalid or missing [DMAPI5_TOPIC_PARAMETER_NEW_REBOOT_STATE]!")
+
+			if(event_handler != null)
+				event_handler.HandleEvent(TGS_EVENT_REBOOT_MODE_CHANGE, reboot_mode, new_reboot_mode)
+
+			reboot_mode = new_reboot_mode
+			return TopicResponse()
+
+		if(DMAPI5_TOPIC_COMMAND_INSTANCE_RENAMED)
+			var/new_instance_name = topic_parameters[DMAPI5_TOPIC_PARAMETER_NEW_INSTANCE_NAME]
+			if(!istext(new_instance_name))
+				return TopicResponse("Invalid or missing [DMAPI5_TOPIC_PARAMETER_NEW_INSTANCE_NAME]!")
+
+			if(event_handler != null)
+				event_handler.HandleEvent(TGS_EVENT_INSTANCE_RENAMED, new_instance_name)
+
+			instance_name = new_instance_name
+			return TopicResponse()
+
+		if(DMAPI5_TOPIC_COMMAND_CHAT_CHANNELS_UPDATE)
+			TGS_DEBUG_LOG("ProcessTopicCommand: It's a chat update")
+			var/list/chat_update_json = topic_parameters[DMAPI5_TOPIC_PARAMETER_CHAT_UPDATE]
+			if(!istype(chat_update_json))
+				TGS_DEBUG_LOG("ProcessTopicCommand: failed \"[DMAPI5_TOPIC_PARAMETER_CHAT_UPDATE]\" check")
+				return TopicResponse("Invalid or missing [DMAPI5_TOPIC_PARAMETER_CHAT_UPDATE]!")
+
+			DecodeChannels(chat_update_json)
+			return TopicResponse()
+
+		if(DMAPI5_TOPIC_COMMAND_SERVER_PORT_UPDATE)
+			var/new_port = topic_parameters[DMAPI5_TOPIC_PARAMETER_NEW_PORT]
+			if (!isnum(new_port) || !(new_port > 0))
+				return TopicResponse("Invalid or missing [DMAPI5_TOPIC_PARAMETER_NEW_PORT]")
+
+			server_port = new_port
+			return TopicResponse()
+
+		if(DMAPI5_TOPIC_COMMAND_HEALTHCHECK)
+			if(event_handler && event_handler.receive_health_checks)
+				event_handler.HandleEvent(TGS_EVENT_HEALTH_CHECK)
+			return TopicResponse()
+
+		if(DMAPI5_TOPIC_COMMAND_WATCHDOG_REATTACH)
+			detached = FALSE
+			var/new_port = topic_parameters[DMAPI5_TOPIC_PARAMETER_NEW_PORT]
+			var/error_message = null
+			if (new_port != null)
+				if (!isnum(new_port) || !(new_port > 0))
+					error_message = "Invalid [DMAPI5_TOPIC_PARAMETER_NEW_PORT]"
+				else
+					server_port = new_port
+
+			var/new_version_string = topic_parameters[DMAPI5_TOPIC_PARAMETER_NEW_SERVER_VERSION]
+			if (!istext(new_version_string))
+				if(error_message != null)
+					error_message += ", "
+				error_message += "Invalid or missing [DMAPI5_TOPIC_PARAMETER_NEW_SERVER_VERSION]"
+			else
+				var/datum/tgs_version/new_version = new(new_version_string)
+				if (event_handler)
+					event_handler.HandleEvent(TGS_EVENT_WATCHDOG_REATTACH, new_version)
+
+				version = new_version
+
+			var/list/reattach_response = TopicResponse(error_message)
+			reattach_response[DMAPI5_PARAMETER_CUSTOM_COMMANDS] = ListCustomCommands()
+			reattach_response[DMAPI5_PARAMETER_TOPIC_PORT] = GetTopicPort()
+			return reattach_response
+
+		if(DMAPI5_TOPIC_COMMAND_SEND_CHUNK)
+			var/list/chunk = topic_parameters[DMAPI5_CHUNK]
+			if(!istype(chunk))
+				return TopicResponse("Invalid [DMAPI5_CHUNK]!")
+
+			var/payload_id = chunk[DMAPI5_CHUNK_PAYLOAD_ID]
+			if(!isnum(payload_id))
+				return TopicResponse("[DMAPI5_CHUNK_PAYLOAD_ID] is not a number!")
+
+			// Always updated the highest known payload ID
+			chunked_requests = max(chunked_requests, payload_id)
+
+			var/sequence_id = chunk[DMAPI5_CHUNK_SEQUENCE_ID]
+			if(!isnum(sequence_id))
+				return TopicResponse("[DMAPI5_CHUNK_SEQUENCE_ID] is not a number!")
+
+			var/total_chunks = chunk[DMAPI5_CHUNK_TOTAL]
+			if(!isnum(total_chunks))
+				return TopicResponse("[DMAPI5_CHUNK_TOTAL] is not a number!")
+
+			if(total_chunks == 0)
+				return TopicResponse("[DMAPI5_CHUNK_TOTAL] is zero!")
+
+			var/payload = chunk[DMAPI5_CHUNK_PAYLOAD]
+			if(!istext(payload))
+				return TopicResponse("[DMAPI5_CHUNK_PAYLOAD] is not text!")
+
+			var/cache_key = "request[payload_id]"
+			var/payloads = chunked_topics[cache_key]
+
+			if(!payloads)
+				payloads = new /list(total_chunks)
+				chunked_topics[cache_key] = payloads
+
+			if(total_chunks != length(payloads))
+				chunked_topics -= cache_key
+				return TopicResponse("Received differing total chunks for same [DMAPI5_CHUNK_PAYLOAD_ID]! Invalidating [DMAPI5_CHUNK_PAYLOAD_ID]!")
+
+			var/pre_existing_chunk = payloads[sequence_id + 1]
+			if(pre_existing_chunk && pre_existing_chunk != payload)
+				chunked_topics -= cache_key
+				return TopicResponse("Received differing payload for same [DMAPI5_CHUNK_SEQUENCE_ID]! Invalidating [DMAPI5_CHUNK_PAYLOAD_ID]!")
+
+			payloads[sequence_id + 1] = payload
+
+			var/list/missing_sequence_ids = list()
+			for(var/i in 1 to total_chunks)
+				if(!payloads[i])
+					missing_sequence_ids += i - 1
+
+			if(length(missing_sequence_ids))
+				return list(DMAPI5_MISSING_CHUNKS = missing_sequence_ids)
+
+			chunked_topics -= cache_key
+			var/full_json = jointext(payloads, "")
+
+			return ProcessRawTopic(full_json, FALSE)
+
+		if(DMAPI5_TOPIC_COMMAND_RECEIVE_CHUNK)
+			var/payload_id = topic_parameters[DMAPI5_CHUNK_PAYLOAD_ID]
+			if(!isnum(payload_id))
+				return TopicResponse("[DMAPI5_CHUNK_PAYLOAD_ID] is not a number!")
+
+			// Always updated the highest known payload ID
+			chunked_requests = max(chunked_requests, payload_id)
+
+			var/list/missing_chunks = topic_parameters[DMAPI5_MISSING_CHUNKS]
+			if(!istype(missing_chunks) || !length(missing_chunks))
+				return TopicResponse("Missing or empty [DMAPI5_MISSING_CHUNKS]!")
+
+			var/sequence_id_to_send = missing_chunks[1]
+			if(!isnum(sequence_id_to_send))
+				return TopicResponse("[DMAPI5_MISSING_CHUNKS] contained a non-number!")
+
+			var/cache_key = ResponseTopicChunkCacheKey(payload_id)
+			var/list/chunks = chunked_topics[cache_key]
+			if(!chunks)
+				return TopicResponse("Unknown response chunk set: P[payload_id]!")
+
+			// sequence IDs in interop chunking are always zero indexed
+			var/chunk_to_send = chunks[sequence_id_to_send + 1]
+			if(!chunk_to_send)
+				return TopicResponse("Sequence ID [sequence_id_to_send] is not present in response chunk P[payload_id]!")
+
+			if(length(missing_chunks) == 1)
+				// sending last chunk, purge the cache
+				chunked_topics -= cache_key
+
+			return chunk_to_send
+
+		if(DMAPI5_TOPIC_COMMAND_RECEIVE_BROADCAST)
+			var/message = topic_parameters[DMAPI5_TOPIC_PARAMETER_BROADCAST_MESSAGE]
+			if (!istext(message))
+				return TopicResponse("Invalid or missing [DMAPI5_TOPIC_PARAMETER_BROADCAST_MESSAGE]")
+
+			TGS_WORLD_ANNOUNCE(message)
+			return TopicResponse()
+
+	return TopicResponse("Unknown command: [command]")
+
+/datum/tgs_api/v5/proc/WorldBroadcast(message)
+	set waitfor = FALSE
+	TGS_WORLD_ANNOUNCE(message)
diff --git a/code/modules/tgs/v5/undefs.dm b/code/modules/tgs/v5/undefs.dm
new file mode 100644
index 00000000..94dcb2e4
--- /dev/null
+++ b/code/modules/tgs/v5/undefs.dm
@@ -0,0 +1,118 @@
+#undef DMAPI5_PARAM_SERVER_PORT
+#undef DMAPI5_PARAM_ACCESS_IDENTIFIER
+
+#undef DMAPI5_BRIDGE_DATA
+#undef DMAPI5_TOPIC_DATA
+
+#undef DMAPI5_BRIDGE_REQUEST_LIMIT
+#undef DMAPI5_TOPIC_REQUEST_LIMIT
+#undef DMAPI5_TOPIC_RESPONSE_LIMIT
+
+#undef DMAPI5_BRIDGE_COMMAND_STARTUP
+#undef DMAPI5_BRIDGE_COMMAND_PRIME
+#undef DMAPI5_BRIDGE_COMMAND_REBOOT
+#undef DMAPI5_BRIDGE_COMMAND_KILL
+#undef DMAPI5_BRIDGE_COMMAND_CHAT_SEND
+#undef DMAPI5_BRIDGE_COMMAND_CHUNK
+
+#undef DMAPI5_PARAMETER_ACCESS_IDENTIFIER
+#undef DMAPI5_PARAMETER_CUSTOM_COMMANDS
+#undef DMAPI5_PARAMETER_TOPIC_PORT
+
+#undef DMAPI5_CHUNK
+#undef DMAPI5_CHUNK_PAYLOAD
+#undef DMAPI5_CHUNK_TOTAL
+#undef DMAPI5_CHUNK_SEQUENCE_ID
+#undef DMAPI5_CHUNK_PAYLOAD_ID
+
+#undef DMAPI5_MISSING_CHUNKS
+
+#undef DMAPI5_RESPONSE_ERROR_MESSAGE
+
+#undef DMAPI5_BRIDGE_PARAMETER_COMMAND_TYPE
+#undef DMAPI5_BRIDGE_PARAMETER_CURRENT_PORT
+#undef DMAPI5_BRIDGE_PARAMETER_VERSION
+#undef DMAPI5_BRIDGE_PARAMETER_CHAT_MESSAGE
+#undef DMAPI5_BRIDGE_PARAMETER_MINIMUM_SECURITY_LEVEL
+
+#undef DMAPI5_BRIDGE_RESPONSE_NEW_PORT
+#undef DMAPI5_BRIDGE_RESPONSE_RUNTIME_INFORMATION
+
+#undef DMAPI5_CHAT_MESSAGE_CHANNEL_IDS
+
+#undef DMAPI5_RUNTIME_INFORMATION_ACCESS_IDENTIFIER
+#undef DMAPI5_RUNTIME_INFORMATION_SERVER_VERSION
+#undef DMAPI5_RUNTIME_INFORMATION_SERVER_PORT
+#undef DMAPI5_RUNTIME_INFORMATION_API_VALIDATE_ONLY
+#undef DMAPI5_RUNTIME_INFORMATION_INSTANCE_NAME
+#undef DMAPI5_RUNTIME_INFORMATION_REVISION
+#undef DMAPI5_RUNTIME_INFORMATION_TEST_MERGES
+#undef DMAPI5_RUNTIME_INFORMATION_SECURITY_LEVEL
+#undef DMAPI5_RUNTIME_INFORMATION_VISIBILITY
+
+#undef DMAPI5_CHAT_UPDATE_CHANNELS
+
+#undef DMAPI5_TEST_MERGE_TIME_MERGED
+#undef DMAPI5_TEST_MERGE_REVISION
+#undef DMAPI5_TEST_MERGE_TITLE_AT_MERGE
+#undef DMAPI5_TEST_MERGE_BODY_AT_MERGE
+#undef DMAPI5_TEST_MERGE_URL
+#undef DMAPI5_TEST_MERGE_AUTHOR
+#undef DMAPI5_TEST_MERGE_NUMBER
+#undef DMAPI5_TEST_MERGE_PULL_REQUEST_REVISION
+#undef DMAPI5_TEST_MERGE_COMMENT
+
+#undef DMAPI5_CHAT_COMMAND_NAME
+#undef DMAPI5_CHAT_COMMAND_PARAMS
+#undef DMAPI5_CHAT_COMMAND_USER
+
+#undef DMAPI5_EVENT_NOTIFICATION_TYPE
+#undef DMAPI5_EVENT_NOTIFICATION_PARAMETERS
+
+#undef DMAPI5_TOPIC_COMMAND_CHAT_COMMAND
+#undef DMAPI5_TOPIC_COMMAND_EVENT_NOTIFICATION
+#undef DMAPI5_TOPIC_COMMAND_CHANGE_PORT
+#undef DMAPI5_TOPIC_COMMAND_CHANGE_REBOOT_STATE
+#undef DMAPI5_TOPIC_COMMAND_INSTANCE_RENAMED
+#undef DMAPI5_TOPIC_COMMAND_CHAT_CHANNELS_UPDATE
+#undef DMAPI5_TOPIC_COMMAND_SERVER_PORT_UPDATE
+#undef DMAPI5_TOPIC_COMMAND_HEALTHCHECK
+#undef DMAPI5_TOPIC_COMMAND_WATCHDOG_REATTACH
+#undef DMAPI5_TOPIC_COMMAND_SEND_CHUNK
+#undef DMAPI5_TOPIC_COMMAND_RECEIVE_CHUNK
+#undef DMAPI5_TOPIC_COMMAND_RECEIVE_BROADCAST
+
+#undef DMAPI5_TOPIC_PARAMETER_COMMAND_TYPE
+#undef DMAPI5_TOPIC_PARAMETER_CHAT_COMMAND
+#undef DMAPI5_TOPIC_PARAMETER_EVENT_NOTIFICATION
+#undef DMAPI5_TOPIC_PARAMETER_NEW_PORT
+#undef DMAPI5_TOPIC_PARAMETER_NEW_REBOOT_STATE
+#undef DMAPI5_TOPIC_PARAMETER_NEW_INSTANCE_NAME
+#undef DMAPI5_TOPIC_PARAMETER_CHAT_UPDATE
+#undef DMAPI5_TOPIC_PARAMETER_NEW_SERVER_VERSION
+#undef DMAPI5_TOPIC_PARAMETER_BROADCAST_MESSAGE
+
+#undef DMAPI5_TOPIC_RESPONSE_COMMAND_RESPONSE
+#undef DMAPI5_TOPIC_RESPONSE_COMMAND_RESPONSE_MESSAGE
+#undef DMAPI5_TOPIC_RESPONSE_CHAT_RESPONSES
+
+#undef DMAPI5_REVISION_INFORMATION_COMMIT_SHA
+#undef DMAPI5_REVISION_INFORMATION_TIMESTAMP
+#undef DMAPI5_REVISION_INFORMATION_ORIGIN_COMMIT_SHA
+
+#undef DMAPI5_CHAT_USER_ID
+#undef DMAPI5_CHAT_USER_FRIENDLY_NAME
+#undef DMAPI5_CHAT_USER_MENTION
+#undef DMAPI5_CHAT_USER_CHANNEL
+
+#undef DMAPI5_CHAT_CHANNEL_ID
+#undef DMAPI5_CHAT_CHANNEL_FRIENDLY_NAME
+#undef DMAPI5_CHAT_CHANNEL_CONNECTION_NAME
+#undef DMAPI5_CHAT_CHANNEL_IS_ADMIN_CHANNEL
+#undef DMAPI5_CHAT_CHANNEL_IS_PRIVATE_CHANNEL
+#undef DMAPI5_CHAT_CHANNEL_TAG
+#undef DMAPI5_CHAT_CHANNEL_EMBEDS_SUPPORTED
+
+#undef DMAPI5_CUSTOM_CHAT_COMMAND_NAME
+#undef DMAPI5_CUSTOM_CHAT_COMMAND_HELP_TEXT
+#undef DMAPI5_CUSTOM_CHAT_COMMAND_ADMIN_ONLY