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MCP Slack MCP Server

local only

MCP Slack runs on your own machine — the client starts it, so there is no endpoint to ping. 592 installs a week from pypi. Last commit 6 Nov 2026.

Secure read-only MCP server for Slack workspaces

Installs per day peak 290 · avg 70 · +160% w/w
a month agotoday
592
Installs / week
pypi · mcp-slack-crunchtools
2
Stars
0 open issues
6 Nov 2026
Last commit
from GitHub
AGPL-3.0
License
Python

What the code does

We read the source, 20 h ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Image runs as root Containerfile:21
USER 0

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add slack -- uvx mcp-slack-crunchtools
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "slack": {
      "command": "uvx",
      "args": [
        "mcp-slack-crunchtools"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.slack]
command = "uvx"
args = ["mcp-slack-crunchtools"]
.cursor/mcp.json
{
  "mcpServers": {
    "slack": {
      "command": "uvx",
      "args": [
        "mcp-slack-crunchtools"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "slack": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mcp-slack-crunchtools"
      ]
    }
  }
}

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MCP Slack — questions

Answers built from our own checks of this server.

Why is there no uptime for MCP Slack?
MCP Slack runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package mcp-slack-crunchtools was installed 592 times last week.
How do I connect MCP Slack?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls mcp-slack-crunchtools straight from pypi; nothing to host, nothing to sign up for.
How many people use MCP Slack?
The pypi package mcp-slack-crunchtools was installed 592 times in the last week. Week over week that is +160%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is MCP Slack open source?
Yes — it is published under the AGPL-3.0 licence, written in Python and 2 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.