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slack-mcp-server

The most powerful MCP Slack Server with no permission requirements, Apps support

What sets this Slack MCP Server apart is that it supports two auth paths: a conventional Bot Token, or your own session credentials ("stealth" mode) which requires no admin approval to install an App. At many companies that's decisive, since App approval can take weeks.

A typical use is "summarise the last two hours of #incident into a timeline", or having the AI post something it just drafted straight to a channel.

GitHub ↗
46
TrustScore
✅ No clear abandonment signal detected; complete security and compatibility checks before production use

What it does for you

Lets your AI work with Slack — read channels, send messages, search history, handling team comms through chat.

Capabilities

  • Read channel messages
  • Send messages
  • Search history

Once installed, try asking your AI

Say this directly in Claude / Cursor or any client with this server connected

  • ›“Summarize today's key discussion in #general”

Why use it

Good for: people who want the AI to see Slack context but work somewhere App installs aren't casually approved.

Before connecting: stealth mode uses your personal session credentials, so the AI reads messages as you. Don't configure it on a shared machine, and be aware it may conflict with your company's IT policy — check first.

Before you connect

🔑 Needs an API key / tokenNode.js

Install / Connect

# No npm package — install from source.
# See the repo's README for the exact command:
# https://github.com/korotovsky/slack-mcp-server

Follow the official README; env and args vary per server.

🛠️ Maintenance weight 30% · 30 pts

📝
Last commit34 days ago
📈
Commits in 90 days0
💬
Recent issues with replies0%
🗃️
Repo statusNormal

📊 Adoption weight 25% · 59 pts

⭐
GitHub stars1.8k (90d +0%)
📦
npm weekly downloadsNot npm-distributed
🚀
Releases per month—

✅ Usability weight 20% · 20 pts

📋
Official registryNot listed
▶️
Runnable entryNot resolvable
🔍
AuditabilityOpen-source repo, auditable

❤️ Health & community weight 25% · 72 pts

🐛
open issues69
🔀
open PRs—
⚖️
LicenseMIT
👥
Contributors / forks30 / 361

Sources: GitHub API · updated 2026-08-19

90-day trend

⭐ stars +0%

Frequently Asked Questions

Do I need admin approval?

For Bot Token mode, yes. Stealth mode doesn't need it — but it acts as you personally, so confirm it fits your company policy first.

Can it post, or only read?

Both. If you only want reads, the configuration can restrict it to read-only.

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