Slack MCP Server

Read and write Slack with session tokens — no OAuth, no bot, no admin approval.

Local serverstdio

What is the Slack MCP Server?

Slack is an MCP integration. Read and write Slack with session tokens — no OAuth, no bot, no admin approval.

Packages and local setup

The published npm package is @aaronsb/slack-mcp, version 2.8.0. Its declared MCP transport is stdio.

The package declares SLACK_MCP_XOXC_TOKEN: Slack session token. Optional — the auth tool extracts it from your browser and stores it in the config file.; SLACK_MCP_XOXD_TOKEN: Slack session cookie. Optional — the auth tool extracts it from your browser and stores it in the config file..

Before connecting

Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.

Project and source

View the publisher’s registry entry · Project repository · Project website. This profile uses version 2.8.0 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.

Browse related communication MCP servers for tools that cover the same kind of work.

Configuration

VariableDescriptionRequired
SLACK_MCP_XOXC_TOKENSlack session token. Optional — the auth tool extracts it from your browser and stores it in the config file.Check documentation
SLACK_MCP_XOXD_TOKENSlack session cookie. Optional — the auth tool extracts it from your browser and stores it in the config file.Check documentation