Slack

The Slack connector allows the chatbot to search, read, and send messages in Slack workspaces through the Slack MCP server.

Connector Settings

OAuth Scopes

See all available scopes in the Slack API scopes documentation. Scopes are grouped by capability below.

Search

Messaging

Canvases

Users

Usage Examples

Once connected, users can interact with Slack through natural language:

• "Search Slack for the latest updates on the project launch"
• "Send a message to the #engineering channel"
• "What did Sarah say about the deployment yesterday?"

Tools

Send Message

slack_send_message

Sends a message to a Slack channel or user. To DM a user, use their user ID as the channel ID. Supports standard markdown formatting. Limited to 5000 characters per message.

Parameters:

• channel_id - The ID of the channel or user to send the message to
• message - The message content in standard markdown
• thread_ts - Timestamp of a parent message to reply in a thread
• reply_broadcast - Also post the reply to the channel
• draft_id - ID of a draft to delete after sending

Schedule Message

slack_schedule_message

Schedules a message for future delivery to a Slack channel. The post_at timestamp must be at least 2 minutes in the future, up to 120 days out.

Parameters:

• channel_id - The ID of the channel to schedule the message in
• message - The message content in standard markdown
• post_at - Unix timestamp for when the message should be sent
• thread_ts - Timestamp of a parent message to reply in a thread
• reply_broadcast - Also post the reply to the channel

Create Slack Canvas Document

slack_create_canvas

Creates a Slack Canvas document from Markdown content. Not available on free Slack plans.

Parameters:

• title - Name for the canvas
• content - The canvas content in Markdown format

Search Public Messages and Files

slack_search_public

Searches for messages and files in public Slack channels only. Supports search modifiers for filtering by channel, author, date, and content type.

Parameters:

• query - Search query with optional modifiers (e.g., from:@user in:#channel keyword)
• content_types - Comma-separated content types: messages, files
• sort - Sort by score (relevance) or timestamp (date). Defaults to score
• sort_dir - Sort direction: asc or desc. Defaults to desc
• limit - Number of results to return, up to 20. Defaults to 20
• cursor - Cursor for pagination from a previous response
• before - Only results before this Unix timestamp
• after - Only results after this Unix timestamp
• include_bots - Include bot messages. Defaults to false
• include_context - Include surrounding context messages. Defaults to true
• response_format - detailed or concise. Defaults to detailed
• context_channel_id - Channel ID to boost results for
• max_context_length - Max character length for context messages

Search Messages and Files

slack_search_public_and_private

Searches for messages and files across all Slack channels, including public, private, DMs, and group DMs.

Parameters:

• query - Search query with optional modifiers (e.g., in:#general from:@user keyword)
• content_types - Comma-separated content types: messages, files
• channel_types - Comma-separated channel types: public_channel, private_channel, mpim, im. Defaults to all
• sort - Sort by score (relevance) or timestamp (date). Defaults to score
• sort_dir - Sort direction: asc or desc. Defaults to desc
• limit - Number of results to return, up to 20. Defaults to 20
• cursor - Cursor for pagination from a previous response
• before - Only results before this Unix timestamp
• after - Only results after this Unix timestamp
• include_bots - Include bot messages. Defaults to false
• include_context - Include surrounding context messages. Defaults to true
• response_format - detailed or concise. Defaults to detailed
• context_channel_id - Channel ID to boost results for
• max_context_length - Max character length for context messages

Read Channel Messages

slack_read_channel

Reads messages from a Slack channel in reverse chronological order. To read DM history, use a user ID as the channel ID.

Parameters:

• channel_id - The ID of the channel or user to read messages from
• limit - Number of messages to return, between 1 and 100. Defaults to 100
• cursor - Cursor for pagination from a previous response
• oldest - Start of time range (Unix timestamp)
• latest - End of time range (Unix timestamp)
• response_format - detailed or concise. Defaults to detailed

Read Thread Messages

slack_read_thread

Reads messages from a specific Slack thread, including the parent message and all replies.

Parameters:

• channel_id - The ID of the channel containing the thread
• message_ts - Timestamp of the parent message
• limit - Number of messages to return, between 1 and 1000. Defaults to 100
• cursor - Cursor for pagination from a previous response
• oldest - Start of time range (Unix timestamp)
• latest - End of time range (Unix timestamp)
• response_format - detailed or concise. Defaults to detailed

Read Slack Canvas Content

slack_read_canvas

Retrieves the markdown content of a Slack Canvas document.

Parameters:

• canvas_id - The ID of the canvas to read

Read User Profile

slack_read_user_profile

Retrieves detailed profile information for a Slack user, including contact info, status, timezone, and role. Defaults to the current user if no user ID is provided.

Parameters:

• user_id - Slack user ID to look up (e.g., U0ABC12345). Defaults to current user
• include_locale - Include the user's locale information. Defaults to false
• response_format - detailed or concise. Defaults to detailed

Create a Draft Message

slack_send_message_draft

Creates a draft message in a Slack channel without sending it. The draft is saved to the user's "Drafts & Sent" in Slack. Only one draft is allowed per channel.

Parameters:

• channel_id - The ID of the channel to create the draft in
• message - The draft message content in standard markdown
• thread_ts - Timestamp of a parent message to create a draft reply in a thread

Search Channels

slack_search_channels

Searches for Slack channels by name or description. Returns channel names, IDs, topics, purposes, and archive status.

Parameters:

• query - Search query for finding channels
• limit - Number of results to return, up to 20. Defaults to 20
• cursor - Cursor for pagination from a previous response
• channel_types - Comma-separated channel types: public_channel, private_channel. Defaults to public_channel
• include_archived - Include archived channels in results
• response_format - detailed or concise. Defaults to detailed

Search Users

slack_search_users

Searches for Slack users by name, email, or profile attributes such as department, role, or title.

Parameters:

• query - Search query (e.g., John Smith, john@company.com, engineering -intern)
• limit - Number of results to return, up to 20. Defaults to 20
• cursor - Cursor for pagination from a previous response
• response_format - detailed or concise. Defaults to detailed