Slack MCP Server (archived reference)
Archived reference Slack MCP server for channels, messages, threads and users; moved to servers-archived.
- Author
- Model Context Protocol
- Works with
- Any MCP client
- License
- MIT
- Documented
- Oct 2, 2026
What Slack MCP Server (archived reference) is
A Slack API MCP server from the reference collection, now archived in modelcontextprotocol/servers-archived. The root README says Slack is now maintained by Zencoder at zencoderai/slack-mcp-server. No official Slack-hosted server is claimed here.
What it does
- List channels
- Post messages and reply to threads
- Add reactions
- Read channel history and thread replies
- List users and get profiles
When to use it
Good fit
- Studying the archived reference implementation
- Legacy setups already using it
Not for
- New setups: archived and not maintained here
- Needing a maintained server: root README points to the Zencoder fork
How to install Slack MCP Server (archived reference)
You need: Slack app with bot token; Node.js
- Create a Slack App at api.slack.com/apps (from scratch)
- Add the bot scopes the README lists and install to the workspace
- Get the bot token and team ID
- Add the server to your MCP client config with those environment values
Permissions and security
What it can access
- Reads and posts in Slack channels the bot can access
Security notes from the maintainers
- Bot token passed via environment
Review the source before granting an agent access to credentials or production systems. We document what the maintainers state; we do not audit code.
Limitations
- Archived
- Maintained elsewhere (Zencoder)
Frequently asked questions
Is the Slack MCP server archived?
Yes, it lives in modelcontextprotocol/servers-archived. source
Who maintains the Slack MCP server now?
The root README says Zencoder maintains it at zencoderai/slack-mcp-server. source
What can the archived Slack MCP server do?
List channels, post and reply, react, read history and threads, and list users. source
Related guides
Sources and gaps
- https://raw.githubusercontent.com/modelcontextprotocol/servers-archived/main/src/slack/README.md readme, checked Oct 2, 2026
- https://raw.githubusercontent.com/modelcontextprotocol/servers/main/README.md readme, checked Oct 2, 2026
Not stated by the maintainers: Exact scopes and env var names not captured; No official Slack-vendor server checked; last_release date not visible in the checked README.