Slack MCP Server

by jtalk22io.github.jtalk22/slack-mcp-serverv5.1.0

Catch up on Slack without reading it. Unreads, threads, search. Browser-session or hosted OAuth.

32Node.jsstdioremoteofficial registry

context tax

needs auth

security

100/100

cold start

pending

freshness

Active10d ago

Our reading of Slack, from the data

Slack is a browser automation MCP server from jtalk22, listed in the official MCP Registry.

Its endpoint requires sign-in or an API key just to list tools, so we haven't measured its token cost; we never use real credentials.

Maintenance is active: the last public signal was 10 days ago (2026-10-12). For comparison, 67% of browser automation servers are active or maintained.

With 32 GitHub stars it ranks #147 of 1,199 browser automation servers we index.

It runs either locally over stdio or as a hosted endpoint and needs 2 secrets (SLACK_TOKEN, SLACK_COOKIE); use a scoped, least-privilege key.

Install Slack MCP server

claude mcp add slack-jtalk22 -e SLACK_TOKEN='<slack-token>' -e SLACK_COOKIE='<slack-cookie>' -- npx -y @jtalk22/slack-mcp

{
  "mcpServers": {
    "slack-jtalk22": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp"
      ],
      "env": {
        "SLACK_TOKEN": "<slack-token>",
        "SLACK_COOKIE": "<slack-cookie>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "slack-jtalk22": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp"
      ],
      "env": {
        "SLACK_TOKEN": "<slack-token>",
        "SLACK_COOKIE": "<slack-cookie>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "slack-jtalk22": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp"
      ],
      "env": {
        "SLACK_TOKEN": "<slack-token>",
        "SLACK_COOKIE": "<slack-cookie>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "slack-jtalk22": {
      "command": "npx",
      "args": [
        "-y",
        "@jtalk22/slack-mcp"
      ],
      "env": {
        "SLACK_TOKEN": "<slack-token>",
        "SLACK_COOKIE": "<slack-cookie>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
SLACK_TOKEN	—	yes	Slack xoxc- token from browser session
SLACK_COOKIE	—	yes	Slack xoxd- cookie from browser session

Remote endpoints

streamable-httphttps://mcp.revasserlabs.com/oauth/mcp

Security signals

100/100 — no known issues found as of 2026-10-19, from the checks below. This is not a guarantee of safety; review what a server can do before connecting it.

Deductions

No findings from the checks that ran.

Checks

✓Repository hygiene (archived, activity, license, security policy)
○Package metadata (install scripts, provenance) — pending
○Tool descriptions (prompt-injection and hidden-text heuristics) — pending
○Source scan (secrets, CVEs, risky code) by vectra-guard — pending

Scan it yourself before installing with vectra-guard, the open-source agent security CLI (made by NavyaAI, which also runs MCPSkillHub). Scoring rules

Freshness

Active — last maintenance signal 10d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-12 · 10d ago · GitHub
Latest release
2026-10-07 · 15d ago · GitHub · v5.1.0
Package published
no data · npm/PyPI
Registry entry updated
2026-10-07 · 15d ago · official registry · v5.1.0

How it compares in Browser Automation

Against the most-starred browser automation servers we index. Token cost is per model turn, measured from each server's live tool list.

Server	Stars	Tools	Tokens / turn	Freshness	Runs
Slack (this)	32	—	not measured	Active	local + hosted
Browser Use	118,444	—	not measured	Active	local
Scrapling	88,517	—	not measured	Active	local
Chrome DevTools	53,807	—	not measured	Active	local
Browser	39,318	—	not measured	Active	local + hosted
Playwright	38,349	—	not measured	Active	local

All browser automation MCP servers

FAQ

›How do I install the Slack MCP server in Claude Code?

Run: claude mcp add slack-jtalk22 -e SLACK_TOKEN='<slack-token>' -e SLACK_COOKIE='<slack-cookie>' -- npx -y @jtalk22/slack-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Slack require an API key?

Yes. It expects SLACK_TOKEN, SLACK_COOKIE, of which 2 are secrets.

›Can I use Slack as a remote (hosted) MCP server?

Yes — it offers both a hosted endpoint and a local stdio package.

›Is Slack in the official MCP registry?

Yes, as io.github.jtalk22/slack-mcp-server.

Sources and method

Official MCP Registry entry: updated 2026-10-07
GitHub repository: fetched 2026-10-19
Package registry (npm / PyPI): listed
Security signals, computed by us: 2026-10-19
Last checked against all sources: 2026-10-19

The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Editorial standards are owned by Ramachandra Vikas Chamarthi, Founder & AI HPC Architect. Spot an error? Request a correction or claim the listing.

License: MIT
Last commit: 2026-10-12
npm: @jtalk22/slack-mcp
Indexed from: registry, npm, awesome/punkpeye

Repository Website npm

Related servers

size = stars · dark = fresh

Servers similar to Slack in Browser Automation and related categories.

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Add to your README

[![MCP security](https://mcpskillhub.com/badge/slack-jtalk22/security.svg)](https://mcpskillhub.com/servers/slack-jtalk22) [![MCP tokens](https://mcpskillhub.com/badge/slack-jtalk22/tokens.svg)](https://mcpskillhub.com/servers/slack-jtalk22) [![MCP freshness](https://mcpskillhub.com/badge/slack-jtalk22/freshness.svg)](https://mcpskillhub.com/servers/slack-jtalk22)