Slack

Description: Enable agents to interact with Slack

Author: Arcade

Auth: User authorization

The Slack Server provides a comprehensive set of for interacting with the Slack platform, enabling users and AI applications to efficiently manage conversations and information. With this MCP Sever, you can:

Retrieve detailed information about , including their IDs, usernames, and emails.
List all in your Slack team and get users in specific conversations.
Send messages to channels, direct messages, or multi-person conversations.
Access messages and metadata from various conversations, including channels and direct messages.
Manage and list conversations, including public and private channels.

This Sever streamlines communication and enhances collaboration within Slack.

Available Tools

Tool Name	Description
Slack.WhoAmI	Get comprehensive user profile.
Slack.GetUsersInfo	Get the information of one or more users in Slack by ID, username, and/or email.
Slack.ListUsers	List all users in the authenticated user's Slack team.
Slack.SendMessage	Send a message to a Channel, Direct Message (IM/DM), or Multi-Person (MPIM) conversation
Slack.GetUsersInConversation	Get the users in a Slack conversation (Channel, DM/IM, or MPIM) by its ID or by channel name.
Slack.GetMessages	Get messages in a Slack Channel, DM (direct message) or MPIM (multi-person) conversation.
Slack.GetConversationMetadata	Get metadata of a Channel, a Direct Message (IM / DM) or a Multi-Person (MPIM) conversation.
Slack.ListConversations	List metadata for Slack conversations (channels, DMs, MPIMs) the user is a member of.
Slack.GetUserInfoById	Get the information of a user in Slack.
Slack.SendDmToUser	Send a direct message to a user in Slack.
Slack.SendMessageToChannel	Send a message to a channel in Slack.
Slack.GetMembersInConversationById	Get the members of a conversation in Slack by the conversation's ID.
Slack.GetMembersInChannelByName	Get the members of a conversation in Slack by the conversation's name.
Slack.GetMessagesInChannelByName	Get the messages in a channel by the channel's name.
Slack.GetMessagesInConversationById	Get the messages in a conversation by the conversation's ID.
Slack.GetMessagesInDirectMessageConversationByUsername	Get the messages in a direct conversation by the user's name.
Slack.GetMessagesInMultiPersonDmConversationByUsernames	Get the messages in a multi-person direct message conversation by the usernames.
Slack.ListConversationsMetadata	List Slack conversations (channels, DMs, MPIMs) the user is a member of.
Slack.ListPublicChannelsMetadata	List metadata for public channels in Slack that the user is a member of.
Slack.ListPrivateChannelsMetadata	List metadata for private channels in Slack that the user is a member of.
Slack.ListGroupDirectMessageConversationsMetadata	List metadata for group direct message conversations that the user is a member of.
Slack.ListDirectMessageConversationsMetadata	List metadata for direct message conversations in Slack that the user is a member of.
Slack.GetConversationMetadataById	Get the metadata of a conversation in Slack searching by its ID.
Slack.GetChannelMetadataByName	Get the metadata of a channel in Slack searching by its name.
Slack.GetDirectMessageConversationMetadataByUsername	Get the metadata of a direct message conversation in Slack by the username.
Slack.GetMultiPersonDmConversationMetadataByUsernames	Get the metadata of a multi-person direct message conversation in Slack by the usernames.

If you need to perform an action that’s not listed here, you can get in touch with us to request a new , or create your own tools.

Slack.WhoAmI

Get comprehensive profile information.

Parameters

This takes no parameters.

Slack.GetUsersInfo

Get the information of one or more in Slack by ID, username, and/or email.

Parameters

user_ids (array[string], optional) The IDs of the to get
usernames (array[string], optional) The usernames of the to get. Prefer retrieving by user_ids and/or emails, when available, since the performance is better.
emails (array[string], optional) The emails of the to get

Slack.ListUsers

List all users in the authenticated ’s Slack team.

Parameters

exclude_bots (boolean, optional) Whether to exclude bots from the results. Defaults to True.
limit (integer, optional) The maximum number of to return. Defaults to 200. Maximum is 500.
next_cursor (string, optional) The next cursor token to use for pagination.

Slack.SendMessage

Send a message to a Channel, Direct Message (IM/DM), or Multi-Person (MPIM) conversation.

Provide exactly one of:

channel_name; or
conversation_id; or
any combination of user_ids, usernames, and/or emails.

In case multiple user_ids, usernames, and/or emails are provided, the will open a multi-person conversation with the specified people and send the message to it.

To improve performance, prefer providing a conversation_id over a channel_name, when available. When referencing , prefer providing user_ids and/or emails, when possible.

Parameters

message (string, required) The content of the message to send.
channel_name (string, optional) The channel name to send the message to. Prefer providing a conversation_id, when available, since the performance is better.
conversation_id (string, optional) The conversation ID to send the message to.
user_ids (array[string], optional) The Slack IDs of the people to message.
emails (array[string], optional) The emails of the people to message.
usernames (array[string], optional) The Slack usernames of the people to message. Prefer providing user_ids and/or emails, when available, since the performance is better.

Slack.GetUsersInConversation

Get the in a Slack conversation (Channel, DM/IM, or MPIM) by its ID or by channel name.

Provide exactly one of conversation_id or channel_name. Prefer providing a conversation_id, when available, since the performance is better.

Parameters

conversation_id (string, optional) The ID of the conversation to get in.
channel_name (string, optional) The name of the channel to get in. Prefer providing a conversation_id, when available, since the performance is better.
limit (integer, optional) The maximum number of to return. Defaults to 200. Maximum is 500.
next_cursor (string, optional) The cursor to use for pagination.

Slack.GetMessages

Get messages in a Slack Channel, DM (direct message) or MPIM (multi-person) conversation.

Provide exactly one of:

conversation_id; or
channel_name; or
any combination of user_ids, usernames, and/or emails.

To improve performance, prefer providing a conversation_id over a channel_name, when available. When referencing , prefer providing user_ids and/or emails, when possible.

Parameters

conversation_id (string, optional) The ID of the conversation to get messages from. Provide exactly one of conversation_id OR any combination of user_ids, usernames, and/or emails.
channel_name (string, optional) The name of the channel to get messages from. Prefer providing a conversation_id, when available, since the performance is better.
user_ids (array[string], optional) The IDs of the in the conversation to get messages from.
usernames (array[string], optional) The usernames of the in the conversation to get messages from. Prefer providinguser_ids and/or emails, when available, since the performance is better.
emails (array[string], optional) The emails of the in the conversation to get messages from.
oldest_relative (string, optional) The oldest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
latest_relative (string, optional) The latest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
oldest_datetime (string, optional) The oldest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
latest_datetime (string, optional) The latest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
limit (integer, optional) The maximum number of messages to return. Defaults to 20. Maximum is 100.
next_cursor (string, optional) The cursor to use for pagination.

Notes about the date/time filtering parameters:

To filter messages by an absolute datetime, use ‘oldest_datetime’ and/or ‘latest_datetime’. If only ‘oldest_datetime’ is provided, it will return messages from the oldest_datetime to the current time. If only ‘latest_datetime’ is provided, it will return messages since the beginning of the conversation to the latest_datetime.

To filter messages by a relative datetime (e.g. 3 days ago, 1 hour ago, etc.), use ‘oldest_relative’ and/or ‘latest_relative’. If only ‘oldest_relative’ is provided, it will return messages from the oldest_relative to the current time. If only ‘latest_relative’ is provided, it will return messages from the current time to the latest_relative.

Do not provide both ‘oldest_datetime’ and ‘oldest_relative’ or both ‘latest_datetime’ and ‘latest_relative’.

Leave all arguments with the default None to get messages without date/time filtering

Slack.GetConversationMetadata

Get metadata of a Channel, a Direct Message (IM / DM) or a Multi-Person (MPIM) conversation.

Provide exactly one of:

conversation_id; or
channel_name; or
any combination of user_ids, usernames, and/or emails.

To improve performance, prefer providing a conversation_id over a channel_name, when available. When referencing , prefer providing user_ids and/or emails, when possible.

Parameters

conversation_id (string, optional) The ID of the conversation to get metadata for
channel_name (string, optional) The name of the channel to get metadata for. Prefer providing a conversation_id, when available, since the performance is better.
usernames (array[string], optional) The usernames of the to get the conversation metadata. Prefer providing user_ids and/or emails, when available, since the performance is better.
emails (array[string], optional) The emails of the to get the conversation metadata.
user_ids (array[string], optional) The IDs of the to get the conversation metadata.

Slack.ListConversations

List metadata for Slack conversations (channels, DMs, MPIMs) the is a member of.

Parameters

conversation_types (Enum ConversationType, optional) Optionally filter by the type(s) of conversations. Defaults to None (all types).
limit (integer, optional) The maximum number of conversations to list. Defaults to 200. Maximum is 500.
next_cursor (string, optional) The cursor to use for pagination.

Slack.GetUserInfoById

This is marked for deprecation and will be removed in a future release. Please use Slack.GetUsersInfo instead.

Get the information of a in Slack.

Parameters

user_id (string, required) The ID of the to get

Slack.SendDmToUser

This is marked for deprecation and will be removed in a future release. Please use Slack.SendMessage instead.

Send a direct message to a in Slack.

Parameters

user_name (string, required) The Slack username of the person you want to message. Slack usernames are ALWAYS lowercase.
message (string, required) The message you want to send

Slack.SendMessageToChannel

This is marked for deprecation and will be removed in a future release. Please use Slack.SendMessage instead.

Send a message to a channel in Slack.

Parameters

channel_name (string, required) The Slack channel name where you want to send the message.
message (string, required) The message you want to send

Slack.GetMembersInConversationById

This is marked for deprecation and will be removed in a future release. Please use Slack.GetUsersInConversation instead.

Get the members of a conversation in Slack by the conversation’s ID.

Parameters

conversation_id (string, required) The ID of the conversation to get members for
limit (integer, optional) The maximum number of members to return.
next_cursor (string, optional) The cursor to use for pagination.

Slack.GetMembersInChannelByName

This is marked for deprecation and will be removed in a future release. Please use Slack.GetUsersInConversation instead.

Get the members of a conversation in Slack by the conversation’s name.

Parameters

channel_name (string, required) The name of the channel to get members for
limit (integer, optional) The maximum number of members to return.
next_cursor (string, optional) The cursor to use for pagination.

Slack.GetMessagesInChannelByName

This is marked for deprecation and will be removed in a future release. Please use Slack.GetMessages instead.

Get the messages in a channel by the channel’s name.

Parameters

channel_name (string, required) The name of the channel
oldest_relative (string, optional) The oldest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
latest_relative (string, optional) The latest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
oldest_datetime (string, optional) The oldest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
latest_datetime (string, optional) The latest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
limit (integer, optional) The maximum number of messages to return.
next_cursor (string, optional) The cursor to use for pagination.

Slack.GetMessagesInConversationById

This is marked for deprecation and will be removed in a future release. Please use Slack.GetMessages instead.

Get the messages in a conversation by the conversation’s ID.

Parameters

conversation_id (string, required) The ID of the conversation to get history for
oldest_relative (string, optional) The oldest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
latest_relative (string, optional) The latest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
oldest_datetime (string, optional) The oldest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
latest_datetime (string, optional) The latest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
limit (integer, optional) The maximum number of messages to return.
next_cursor (string, optional) The cursor to use for pagination.

Slack.GetMessagesInDirectMessageConversationByUsername

This is marked for deprecation and will be removed in a future release. Please use Slack.GetMessages instead.

Get the messages in a direct conversation by the ’s name.

Parameters

username (string, required) The username of the to get messages from
oldest_relative (string, optional) The oldest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
latest_relative (string, optional) The latest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
oldest_datetime (string, optional) The oldest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
latest_datetime (string, optional) The latest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
limit (integer, optional) The maximum number of messages to return.
next_cursor (string, optional) The cursor to use for pagination.

Slack.GetMessagesInMultiPersonDmConversationByUsernames

This is marked for deprecation and will be removed in a future release. Please use Slack.GetMessages instead.

Get the messages in a multi-person direct message conversation by the usernames.

Parameters

usernames (array[string], required) The usernames of the to get messages from
oldest_relative (string, optional) The oldest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
latest_relative (string, optional) The latest message to include in the results, specified as a time offset from the current time in the format ‘DD:HH:MM’
oldest_datetime (string, optional) The oldest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
latest_datetime (string, optional) The latest message to include in the results, specified as a datetime object in the format ‘YYYY-MM-DD HH:MM:SS’
limit (integer, optional) The maximum number of messages to return.
next_cursor (string, optional) The cursor to use for pagination.