Slack MCP Server

Source check found a deprecation notice

An archived reference MCP server that enables Claude to interact with Slack workspaces via the Slack API.

Source-checked against the vendor's site Oct 25, 2026 · rebuilt from the vendor's own pagesProfile updated Oct 25, 2026Link checked Oct 24, 2026How we rate

Free(not source-checked)MCP Servers

Visit website →

In short

Slack MCP Server is a free, archived reference tool that lets Claude interact with Slack workspaces. It supports listing channels, posting messages, and managing reactions via the Slack API.

Slack MCP Server is a reference Model Context Protocol server that enables Claude to interact with Slack workspaces.

The server provides a tool to list public or pre-defined channels in the workspace. The server allows posting a new message to a Slack channel. The server supports replying to a specific message thread. The server can add an emoji reaction to a message. The server retrieves recent messages from a channel. The vendor says that the server gets all replies in a message thread. The server lists workspace users with basic profile information. The server retrieves detailed profile information for a specific user.

The server requires a Bot User OAuth Token starting with xoxb- as an environment variable. The server requires the Slack workspace ID starting with T as an environment variable.

The server is configured for use with Claude Desktop via a JSON configuration file. The server supports usage with VS Code through manual or quick installation methods.

From the vendor's pages

According to Slack MCP Server: Slack MCP Server is a reference Model Context Protocol server that enables Claude to interact with Slack workspaces. Its pages list this strength: The server is licensed under the MIT License.

— The AI Tool Bible editorial team

Pros

✅ The server is licensed under the MIT License.
✅ The server integrates with Claude Desktop.
✅ The server lists public or pre-defined channels.
✅ The server posts messages to Slack channels.

Facts

Pricing: free (not source-checked)
API available: Yes (not source-checked)
Open source: Yes (license: MIT)
GitHub stars: 305 (checked Oct 29, 2026) (not source-checked)
Last GitHub push: May 28, 2025 (not source-checked)
First commit: May 2025 (not source-checked)
Archived on GitHub: Yes (not source-checked)

Where this tool sits

MCP Servers MCP productivity Servers MCP reference Servers AI Slack integrations Open-source AI tools Self-hosted AI tools For Developers Free Forever Open Source Open Source Free Powered By Claude Self Hostable

Use cases

Listing public or pre-defined channelsPosting messages to Slack channelsAdding emoji reactions to messagesRetrieving recent channel history

Frequently asked

How much does the Slack MCP Server cost?: The Slack MCP Server is free. The provided documentation does not list any specific pricing details or subscription fees for using this reference server.
What specific Slack actions can Claude perform with this server?: Claude can list public or pre-defined channels, post new messages, reply to threads, add emoji reactions, retrieve recent messages, get thread replies, and list workspace users with profile information.
What credentials are required to configure the server?: You need a Bot User OAuth Token starting with xoxb- and a Slack workspace ID starting with T. Both must be set as environment variables for the server to function.
Which applications support the Slack MCP Server?: The server is configured for use with Claude Desktop via a JSON configuration file. It also supports usage with VS Code through manual or quick installation methods.
Is the Slack MCP Server currently active or archived?: The Slack MCP Server is described as an archived reference Model Context Protocol server. It serves as a reference implementation for interacting with Slack workspaces via the API.

See alternatives to Slack MCP Server →