slack-mcp-server

Slack MCP Server by korotovsky

Model Context Protocol (MCP) server for Slack Workspaces. This integration supports both Stdio and SSE transports, proxy settings and does not require any permissions or bots being created or approved by Workspace admins

Live Registry Versionv1.3.0Previous: v1.2.3Published 2026-05-14

Stability Grade

B+ (86/100)

90-Day Velocity

0 releases

Stable release cadence

Dependencies

0 direct

NPM manifest

License

MIT

Verified on NPM

Recommended Exact Pin: npx -y slack-mcp-server@1.3.0

NPM Registry ->GitHub Repo ->

TL;DR Verdict & Quick Citation Summary (2026-10-24)Source: AgentBreakWatch Live NPM Index

Slack MCP Server (slack-mcp-server) is currently at v1.3.0 on NPM (published 2026-05-14), with a 90-day stability score of 86/100 (B+) and MEDIUM schema drift risk across 0 releases in the past 90 days. recent release v1.3.0 (up from v1.2.3) updates Productivity & Docs MCP tool schemas and transport handling (0 releases in last 90d). Pin exact version v1.3.0 in .mcp.json to avoid silent parameter drift. Production teams should pin npx -y slack-mcp-server@1.3.0 rather than using unpinned @latest tags.

Breaking Changes & Tool Schema Drift Analysis

recent release v1.3.0 (up from v1.2.3) updates Productivity & Docs MCP tool schemas and transport handling (0 releases in last 90d). Pin exact version v1.3.0 in .mcp.json to avoid silent parameter drift.

Watched Exports / MCP Tool Signatures:

slack-mcp-servertools/listtools/call

Before (Deprecated / Unpinned Pattern)

"slack-mcp-server": {
  "command": "npx",
  "args": ["-y", "slack-mcp-server@latest"]
}

After (Verified v1.3.0 Pattern)

"slack-mcp-server": {
  "command": "npx",
  "args": ["-y", "slack-mcp-server@1.3.0"]
}

Frequently Asked Questions: slack-mcp-server

What is the latest version of slack-mcp-server on NPM?

As of 2026-10-24, the latest stable version of slack-mcp-server (Slack MCP Server by korotovsky) on NPM is v1.3.0, published on 2026-05-14. It has shipped 0 releases in the last 90 days.

Does slack-mcp-server v1.3.0 have breaking changes or MCP schema drift risk?

slack-mcp-server currently carries a MEDIUM schema drift risk rating with a Stability Score of 86/100 (Grade B+). recent release v1.3.0 (up from v1.2.3) updates Productivity & Docs MCP tool schemas and transport handling (0 releases in last 90d). Pin exact version v1.3.0 in .mcp.json to avoid silent parameter drift.

How do I safely pin slack-mcp-server in production?

Avoid unpinned @latest tags in production agent configs. Pin the exact verified version using `npx -y slack-mcp-server@1.3.0` and monitor slack-mcp-server, tools/list, tools/call for parameter or schema changes.

30-Min Registry & Schema Poller

Get Instant Breaking-Change Alerts for slack-mcp-server

We poll NPM and korotovsky/slack-mcp-server every 30 minutes. Get an email with the exact diff when slack-mcp-server ships a breaking release beyond v1.3.0.