Slack MCP Server

Name: Slack MCP Server
Author: korotovsky

by korotovsky

The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic.

1.8k 4 tools GitHub

No known CVEs

MIT license

Maintained

Last commit 41d ago

Works with most clients

Transport: stdio, sse, http

4 tools · ~1.4k tok

Grade B · 0.7% of 200K ctx

MCPpedia last refreshed this data 21h ago

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Slack MCP Server is an MCP server that the most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 68/100 on MCPpedia's security, maintenance and efficiency rubric.

Communication

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "slack-mcp-server": {
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ],
      "command": "npx"
    }
  }
}

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What Slack Mcp Server does

Model Context Protocol (MCP) server for Slack Workspaces. The most powerful MCP Slack server — supports Stdio, SSE and HTTP transports, proxy settings, DMs, Group DMs, Smart History fetch (by date or count), may work via OAuth or in complete stealth mode with no permissions and scopes in Workspace 😏.

Test This Server

No automated test available for this server. Check the GitHub README for setup instructions.

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

68/100across 5 weighted dimensions

How we score →

0255075100

−32

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

No package registry to scan.

Inventory

Tools (4)

Click any tool to inspect its schema.

~1.4k tokens total

Community

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Frequently Asked Questions

Is Slack Mcp Server safe to use?: Slack Mcp Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Slack Mcp Server?: Slack Mcp Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can Slack Mcp Server do?: Slack Mcp Server provides 4 tools: conversations_history, conversations_replies, conversations_add_message, conversations_search_messages. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Slack Mcp Server?: Slack Mcp Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Slack Mcp Server actively maintained?: Slack Mcp Server is recently maintained — last commit was 41 days ago. It has 1,796 GitHub stars.

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Community

Discussion

Start a conversation

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Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Frequently Asked Questions

Is Slack Mcp Server safe to use?

Slack Mcp Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install Slack Mcp Server?

Slack Mcp Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can Slack Mcp Server do?

Slack Mcp Server provides 4 tools: conversations_history, conversations_replies, conversations_add_message, conversations_search_messages. See the full tools list on the server page for descriptions and parameters.

What AI clients work with Slack Mcp Server?

Slack Mcp Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is Slack Mcp Server actively maintained?

Slack Mcp Server is recently maintained — last commit was 41 days ago. It has 1,796 GitHub stars.