slack

name

slack

description

Slack is a messaging platform for teams that facilitates communication through channels, direct messages, and integrations with other tools, enhancing productivity and collaboration. Read and write Slack data through One: adminconversations, conversations, adminusers, chat, files, appsdatastore and more, 306 actions with real parameter documentation. Use whenever the user asks to look something up in Slack, create or update a record there, or build code against the Slack API.

Slack through One

Slack is a messaging platform for teams that facilitates communication through channels, direct messages, and integrations with other tools, enhancing productivity and collaboration.

One exposes Slack through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform slack if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm Slack is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real Slack account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

AdminConversations

Action	Method	Path	Action id
Bulk Exclude Channels From Slack AI (Admin)	GET	/admin.conversations.bulkSetExcludeFromSlackAi	conn_mod_def::GJ7H4_oUtyY::alod7s-TQmGX8Xk5kva0gA
Archive an Enterprise Channel (Admin)	POST	/admin.conversations.archive	conn_mod_def::GJ7H44RFK00::oilIQlqKRVSZJYiojV_S6A
Bulk Archive Channels (Admin)	POST	/admin.conversations.bulkArchive	conn_mod_def::GJ7H43eJ2w8::xLUm-4e8TgS-FOsyi8X5zg
Bulk Delete Conversations (Enterprise Admin)	POST	/admin.conversations.bulkDelete	conn_mod_def::GJ7H4_zHmr8::7zXHMEICST6UcAUGHOj4UQ
Bulk Move Channels to Another Team (Enterprise Admin)	POST	/admin.conversations.bulkMove	conn_mod_def::GJ7H5ATjHW0::snrgSS-8SYq_onPZODh56Q
Convert a Private Channel to Public (Enterprise Admin)	POST	/admin.conversations.convertToPublic	conn_mod_def::GJ7H4_q-KOs::uvXxxos-SJSHNvRDbJeREA
Convert a Public Channel to Private (Enterprise Admin)	POST	/admin.conversations.convertToPrivate	conn_mod_def::GJ7H5AqxTws::CtCsjgipQC-C1fpQL4qwzg
Create a Salesforce Channel for an Object (Admin)	POST	/admin.conversations.createForObjects	conn_mod_def::GJ7H5J7KCso::fdVb9YsTRk6yzm-QPXOD5g
Create an Admin Conversation (Channel)	POST	/admin.conversations.create	conn_mod_def::GJ7H5Hw8uQo::OXA-sw4uSXuqQ6Oq9sqTSA
Delete an Enterprise Channel (Admin)	POST	/admin.conversations.delete	conn_mod_def::GJ7H5H2ZiSI::LQ1_IrtZRbmUbpfiPG_qiw
Disconnect a Shared Channel From Workspaces (Enterprise Admin)	POST

13 more AdminConversations actions are available through search.

Conversations

Action	Method	Path	Action id
Decline a Slack Connect Channel Invite	GET	/conversations.declineSharedInvite	conn_mod_def::GJ7H9Y1lZSM::Qi7G3XRESc2T72Gjk0OuRA
Fetch a Conversation’s Message History (conversations.history)	GET	/conversations.history	conn_mod_def::GJ7H9XYEBzI::FkfMtDsaTzKxb92jFEqxHg
Invite a User to a Slack Connect Channel (conversations.inviteShared)	GET	/conversations.inviteShared	conn_mod_def::GJ7H9hrsd3o::4vFilJ1TSo6TFfskwh2vIA
List Conversations (Channels) in a Workspace	GET	/conversations.list	conn_mod_def::GJ7H9zmRFIk::1RxrzeicS-ibnXF4sFC5Ww
Retrieve a Conversation Thread’s Replies	GET	/conversations.replies	conn_mod_def::GJ7H99BNZZY::YUA8ceLYSMmIEPSjoukdNg
Retrieve Conversation Info	GET	/conversations.info	conn_mod_def::GJ7H9ghDiFM::hgg9QZrgStig4KN5Uits5Q
Accept a Slack Connect Channel Invite	POST	/conversations.acceptSharedInvite	conn_mod_def::GJ7H9OmS3wk::1Yz4IrqSThysoaI4ul0Vpg
Approve a Requested Slack Connect Invite (Shared Invite)	POST	/conversations.requestSharedInvite.approve	conn_mod_def::GJ7H-CQPHRM::s7jJS39NQjC8oxYT7xxxvQ
Approve a Slack Connect Shared Channel Invite	POST	/conversations.approveSharedInvite	conn_mod_def::GJ7H9O6fNTE::PE35v-TrQi-M69N1hmT39A
Archive a Conversation	POST	/conversations.archive	conn_mod_def::GJ7H9OAx9UE::k_cI74hpQu6RioRT-9CdXQ
Close a Direct Message Conversation	POST	/conversations.close	conn_mod_def::GJ7H9WC7DNo::SNNAy6uETPejoshiB86y6Q

11 more Conversations actions are available through search.

AdminUsers

Action	Method	Path	Action id
Get a Guest User’s Expiration (Admin)	GET	/admin.users.getExpiration	conn_mod_def::GJ7H6pDE6GI::Jo1nl15eRnuWFfvgqAxiAg
Assign an Enterprise User to a Workspace (admin.users.assign)	POST	/admin.users.assign	conn_mod_def::GJ7H6o5vUZ8::DnAY9-OTQ8iHI_Yzza3e_g
Invite a User to a Workspace (Admin)	POST	/admin.users.invite	conn_mod_def::GJ7H6pNT_9I::ebYjmcOYRDqzfCpZrJ9VbQ
List Workspace Users (Admin)	POST	/admin.users.list	conn_mod_def::GJ7H6yFXXjY::ZuAI39qlQQaItzy6yCrLug
Remove a User from a Workspace (Admin)	POST	/admin.users.remove	conn_mod_def::GJ7H6w88Gjk::6FduTK3YR3q-GPlRvDjBow
Set a Guest User’s Expiration (Admin)	POST	/admin.users.setExpiration	conn_mod_def::GJ7H7C9hgls::p-Lqwq02Twq2WpGKlTJZUA
Set a User to Regular (Admin)	POST	/admin.users.setRegular	conn_mod_def::GJ7H7CjqR-k::LlsZi-1_Q0GXkTzcDL0uhw
Set a Workspace or Org Admin for a User (admin.users.setAdmin)	POST	/admin.users.setAdmin	conn_mod_def::GJ7H65OiDS8::3WgW_JkbSjW6Wye_ZwSqRg
Set a Workspace or Org Owner for a User (Admin)	POST	/admin.users.setOwner	conn_mod_def::GJ7H7BlMfBk::ossnLXW3RL6yy2HNa3H3_A

Chat

Action	Method	Path	Action id
Retrieve a Message Permalink (chat.getPermalink)	GET	/chat.getPermalink	conn_mod_def::GJ7H85X11eQ::yuv72_aqQiWe41GP4rPp_Q
Append to a Streaming Message	POST	/chat.appendStream	conn_mod_def::GJ7H8u7r8HM::IuduJEKPQ_OuNeS6FAZbKg
Delete a Message (chat.delete)	POST	/chat.delete	conn_mod_def::GJ7H8xC4WPE::B6LHdJ4ATbSoAgoHwrFY8g
Delete a Scheduled Message (Chat)	POST	/chat.deleteScheduledMessage	conn_mod_def::GJ7H85CUkI0::EK7uUodTS5ORo2F8WB7t4A
Provide Custom Unfurl Behavior for User-Posted URLs (chat.unfurl)	POST	/chat.unfurl	conn_mod_def::GJ7H9HXJoS8::rLEWpI-mRw--lT0hj3dSGQ
Schedule a Message in a Channel	POST	/chat.scheduleMessage	conn_mod_def::GJ7H9ERx2yI::jbqXWpp7Sq-PevPmi3Hl_A
Send an Ephemeral Message to a User in a Channel (chat.postEphemeral)	POST	/chat.postEphemeral	conn_mod_def::GJ7H83x9QE0::8TpWx6ciTuOEc_9hMTLPCA
Start a Streaming Conversation (chat.startStream)	POST	/chat.startStream	conn_mod_def::GJ7H9DE_39A::OWxnhSm_QRWa9SVC-3A5bA
Stop a Streaming Conversation Message	POST	/chat.stopStream	conn_mod_def::GJ7H9CTBRgQ::E9rGQxCQR0iOoZIWIUwMrg

Files

Action	Method	Path	Action id
Get File Info	GET	/files.info	conn_mod_def::GJ7H-lGozYM::Hh9bZWIYQOGOygKWqMtAog
List Team Files	GET	/files.list	conn_mod_def::GJ7H-l9eZ7I::37IWoCi-TGygVZOVv-Dxfw
Search Files	GET	/search.files	conn_mod_def::GJ7IAbu8ZtE::Eii240c1SZGEC2dOO_xQbA
Complete an External File Upload (Finalize & Share)	POST	/files.completeUploadExternal	conn_mod_def::GJ7H-cL9hvE::Zne1lr0oSwyLQnymYAlQJw
Delete a File	POST	/files.delete	conn_mod_def::GJ7H-cFhjEM::jCKOWeF2TXOkS6u0E2ZCtw
Enable Public Sharing for a File (Generate Public URL)	POST	/files.sharedPublicURL	conn_mod_def::GJ7H-_BCpUc::nr1uPn5TTCCz6bPU2NArUA
Get an External File Upload URL	POST	/files.getUploadURLExternal	conn_mod_def::GJ7H-k3DemE::4J-O_e5uTASvZtkMxJADSQ
Revoke a File’s Public URL	POST	/files.revokePublicURL	conn_mod_def::GJ7H-xkYYsg::CtAMMsNnRSCtBArdF4ahYA
Upload a File (Deprecated)	POST	/files.upload	conn_mod_def::GJ7H-921ibY::o1d7SEpyRJGr_yQa3mEIag

AppsDatastore

Action	Method	Path	Action id
Bulk Delete Items from an App Datastore	POST	/apps.datastore.bulkDelete	conn_mod_def::GJ7H7noa0zw::WQW7Xs3GT06DBD5-rLGTXw
Bulk Get Items from an App Datastore	POST	/apps.datastore.bulkGet	conn_mod_def::GJ7H7iDPWOQ::_EzVEFHaTUeQptmc3Y7nEw
Count Matching Items in an App Datastore	POST	/apps.datastore.count	conn_mod_def::GJ7H7isA7i8::DhKhywY8Rr6THgw42iCndg
Create or Replace a Workflow App Datastore Item	POST	/apps.datastore.put	conn_mod_def::GJ7H7vBdV04::nPeSnD5eQE26Xh0nL71E8g
Delete a Datastore Item (Workflow Apps Only)	POST	/apps.datastore.delete	conn_mod_def::GJ7H7uPE9mg::ZwGOySKPRlyWFtkU2ykGgA
Get a Datastore Item (Workflow Apps Only)	POST	/apps.datastore.get	conn_mod_def::GJ7H7uLTJTM::XbDcpTOhQ4aQnrLVs79kKQ
Query a Workflow App Datastore for Items	POST	/apps.datastore.query	conn_mod_def::GJ7H7up-wxE::KNG4L-r-S8u0X0PBxhoVdA
Update (or Create) an App Datastore Item	POST	/apps.datastore.update	conn_mod_def::GJ7H7uww8vE::apeJC_FnS6i31Dfyyu44Vg

Users

Action	Method	Path	Action id
Delete the Authenticated User’s Profile Photo (users.deletePhoto)	GET	/users.deletePhoto	conn_mod_def::GJ7IBJFdHj4::8KFe0xPMRBycLJsugU21Zg
Get a User’s Info	GET	/users.info	conn_mod_def::GJ7IBRMr_NI::HS7RT1TWSAyGfY6mLzCQBw
Get a User’s Presence	GET	/users.getPresence	conn_mod_def::GJ7IBICt6ag::f5jlXfrAQIihMIYEq-8P-A
List Workspace Users	GET	/users.list	conn_mod_def::GJ7IBQjys4M::0ZFuc5nOQAuLPd7qBVmGZA
Look Up a User by Email	GET	/users.lookupByEmail	conn_mod_def::GJ7IBRRLGLg::lT5nMpjVRey1VPf51Si_TQ
Mark Authenticated User as Active (Deprecated / No-Op)	POST	/users.setActive	conn_mod_def::GJ7IBYFSVs8::5A9ophpmSvisHLvZHyjyPg
Set a User’s Profile Photo (users.setPhoto)	POST	/users.setPhoto	conn_mod_def::GJ7IBX0JDQc::Ms3o8Z4jQLq9mkWYc8zpgw
Set the Calling User’s Presence (users.setPresence)	POST	/users.setPresence	conn_mod_def::GJ7IBYtarHw::JL646tcWR8uX6MywrZ9gZQ

RemoteFiles

Action	Method	Path	Action id
List Remote Files	GET	/files.remote.list	conn_mod_def::GJ7H-yKGOnU::p-hIiSc0Q_KpIgjs8zxzsA
Retrieve Remote File Info	GET	/files.remote.info	conn_mod_def::GJ7H-pefXpc::CpLdVh2QTG-ZuNTVgJm3Cw
Share a Remote File to Channels	GET	/files.remote.share	conn_mod_def::GJ7H-2NTYAE::_5cyTWNIQXWBKKI7AvC-QA
Add a Remote File (Upsert)	POST	/files.remote.add	conn_mod_def::GJ7H-klPMfs::4fMb5MbsRVCqFd4lE9Xweg
Remove a Remote File	POST	/files.remote.remove	conn_mod_def::GJ7H-wKMAdQ::63ACLLAORTilACC7wyA-VA
Update a Remote File	POST	/files.remote.update	conn_mod_def::GJ7H-xHms7o::DkgI8JVjQq2qWOA6fsakjQ

UserGroups

Action	Method	Path	Action id
List User Groups	GET	/usergroups.list	conn_mod_def::GJ7IA-1rrsI::FI2c3VWgRka20y6ZwrgrRg
List Users in a User Group	GET	/usergroups.users.list	conn_mod_def::GJ7IA-VP-14::1cTj5zRQQaWTL8kjVVaZfA
Create a User Group	POST	/usergroups.create	conn_mod_def::GJ7IA24KRcE::ihsUzK0TSPGAYW_DBAtwow
Disable a User Group	POST	/usergroups.disable	conn_mod_def::GJ7IA-W3NCg::04jkvKqPS7OjUkXz4kK8kQ
Enable a User Group	POST	/usergroups.enable	conn_mod_def::GJ7IA_iVCQo::dZHgXFEsSHWa-9z0h-US6Q
Update a User Group	POST	/usergroups.update	conn_mod_def::GJ7IBBNnzXg::2y9Yi8GaStSP5qvbu3xfIg

AdminTeamsSettings

Action	Method	Path	Action id
Set a Workspace’s Default Channels	GET	/admin.teams.settings.setDefaultChannels	conn_mod_def::GJ7H6WtBoiU::Ku6Na3RpRr-VgpzX736ROw
Set a Workspace’s Icon (Admin)	GET	/admin.teams.settings.setIcon	conn_mod_def::GJ7H6hB7a3o::lYCfHWfSRjacwKXiAR_Ywg
Fetch Workspace Settings (Admin)	POST	/admin.teams.settings.info	conn_mod_def::GJ7H6Z5QjV0::82WZjbRMTvqCV0EvMPzfhw
Set a Workspace’s Description (Admin)	POST	/admin.teams.settings.setDescription	conn_mod_def::GJ7H6XPw6A0::ONXN8jIxRhOnz1rztFoAYw
Set a Workspace’s Discoverability (Admin)	POST	/admin.teams.settings.setDiscoverability	conn_mod_def::GJ7H6hQkclQ::ruCsIqPrRumcc_tFk83w5g
Set a Workspace’s Name (Admin)	POST	/admin.teams.settings.setName	conn_mod_def::GJ7H6iItweM::ZJNiQmQOTKGYQ-7irlWySg

AdminEmoji

Action	Method	Path	Action id
Add an Enterprise Emoji Alias (Admin)	GET	/admin.emoji.addAlias	conn_mod_def::GJ7H5ueV274::53fltPi_T52xR-y5K-MsTQ
Add an Enterprise Organization Emoji (Admin)	GET	/admin.emoji.add	conn_mod_def::GJ7H5s_adHY::HfOJs7j7QgCzVVoJ2OoV_Q
List an Enterprise Organization’s Custom Emoji (Admin)	GET	/admin.emoji.list	conn_mod_def::GJ7H5s0fWF0::ZHrSDVKLRSCb9QuxDtSSqQ
Remove a Custom Emoji (Enterprise Org)	GET	/admin.emoji.remove	conn_mod_def::GJ7H53ak9g0::IZAC4-jZRl6usAw669eQXw
Rename a Custom Emoji (Enterprise Admin)	GET	/admin.emoji.rename	conn_mod_def::GJ7H52hzTIE::lR5AqsTCTxak6xJpWJI1kw

This lists 90 of 306 actions. For anything not here, call search_one_platform_actions with platform slack. The full catalog is at https://www.withone.ai/knowledge/slack.

When a call fails

The error comes from Slack, not from One. A 400 or 422 means your parameters do not match the schema, so re-read the knowledge and fix the field. A 401 or 403 means the connection needs re-authorizing, which no retry will fix. A 404 means the id is not on this account. A 429 means slow down. Never retry a write more than once: the first attempt may have landed.

Full catalog: https://www.withone.ai/knowledge/slack

Integration knowledge by One (withone.ai), licensed under One-Knowledge-1.0. Attribution must be preserved in derivative works.