Slack

Slack is a workplace messaging platform. Channels organize team conversations; threaded replies, DMs, and group DMs cover synchronous and async use. The Web API exposes conversations_*, chat_*, users_*, and files_* method families.

Active Verified

Capabilities (8)

List Conversations

List channels (public, private, DMs, group DMs) the bot/user has access to. Paginated via cursor.


                      conversations_list(types?, cursor?, limit?) -> [channel]

Required scopes:

channels:read groups:read im:read mpim:read

Get Channel History

Fetch messages in a channel, oldest-first or newest-first, with optional time-range filtering. Paginated via cursor.


                      conversations_history(channel, oldest?, latest?, cursor?, limit?) -> [message]

Required scopes:

channels:history groups:history im:history mpim:history

Get Thread Replies

Fetch the full reply tree for a threaded message. First message in the response IS the thread root. Paginated via cursor.


                      conversations_replies(channel, ts, cursor?, limit?) -> [message]

Required scopes:

channels:history groups:history im:history mpim:history

Get User Info

Resolve a user_id to profile info (real_name, display_name, email when scoped).


                      users_info(user) -> user_profile

Required scopes:

users:read

Edit Message

Edit a previously-sent message. The bot/user identity must match the original sender. Cannot be used to edit another user's message.


                      chat_update(channel, ts, text?, blocks?) -> message

Required scopes:

chat:write

Add Reaction

Add an emoji reaction to a message. `name` is the emoji short name WITHOUT colons (e.g., `thumbsup`, not `:thumbsup:`).


                      reactions_add(channel, timestamp, name) -> ok

Required scopes:

reactions:write

Send Message

Send a message to a channel, DM, or group DM. Supports plain text via `text` or Block Kit via `blocks`. Use `thread_ts` to reply in a thread. Set `reply_broadcast=true` to broadcast a thread reply back to the channel.


                      chat_postMessage(channel, text?, blocks?, thread_ts?, ...) -> message

Required scopes:

chat:write

Delete Message

DESTRUCTIVE: permanently delete a message. The bot/user identity must match the sender OR have `chat:write:user` scope with the admin-installed app posture. Requires user confirmation before dispatch.


                      chat_delete(channel, ts) -> ok

Destructive

Required scopes:

chat:write

Links

No external links available.

Authentication

Oauth2_authorization_code (Primary)