Add
OfficialCollaboration

Slack

by Slack

Search Slack, read threads, send messages and edit canvases from an AI assistant through Slack's hosted server.

ConnectOfficial docs(opens in a new tab)

Best for

Teams that want an assistant to find past decisions, summarise threads and post updates in Slack from a supported MCP client.

Connect Slack

Recommended setup

Remote

Slack ties access to a registered app, so setup depends on the client you use. Follow Slack's own guide for your client.

Important

Only apps published in the Slack Marketplace and internal apps can use MCP; unlisted apps are not allowed. Slack names Claude.ai, Claude Code, Perplexity and Cursor as partner clients that work without building an app.

Open official setup guide(opens in a new tab)Link checked Oct 31, 2026

Overview

Slack runs its own hosted MCP server at mcp.slack.com. Once a client is connected and the user has authorized it, an assistant can search messages, files, people and channels, read a channel or a thread in full, send or schedule messages, add reactions, and create or update canvases and lists. It speaks Streamable HTTP only. Access goes through a registered Slack app, so a workspace's admins can approve and manage each client, and every call counts against the same rate limits as the Slack Web API.

What it can do

  • Searches messages and files, workspace users, public and private channels, and custom emoji, and lists the channels you belong to.
  • Sends, schedules and drafts messages, reads full channel history and threads, and adds or reads reactions.
  • Creates, updates and reads canvases, uploads files in two steps, and works with Slack lists and their records.
  • Connects over Streamable HTTP at https://mcp.slack.com/mcp; SSE connections and Dynamic Client Registration are not supported.

What you need

Sign-in and credentials

Confidential OAuth. The MCP client must be backed by a registered Slack app with a fixed app ID, and each user authorizes it; the scopes needed depend on the tools used. If the app has allowed IP address ranges configured, requests from other addresses are rejected.

Sources

Official docs
docs.slack.dev/ai/mcp-server
Record reviewed
Oct 31, 2026

Statements on this page come from

Why is this labelled Official?

The server is documented in Slack's own developer documentation at docs.slack.dev (the page footer credits Slack Technologies, a Salesforce company), which describes it as the Slack MCP server and lists its endpoint, OAuth endpoints and rate limits. No MCP Registry entry was found for it on 2026-10-31; several community Slack servers are registered under other names.

Listing on HistChat is not an endorsement or a security review. MCP servers can access data or perform actions, so review the source and permissions before connecting.

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