# Slack MCP Server (slack-mcp-server) - AgentBreakWatch Reference

> TL;DR Verdict: 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 last 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.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/slack-mcp-server
- Category Hub: https://agentbreakwatch.vercel.app/c/productivity-docs (Productivity, Notion, Slack, Jira & Docs MCP Servers)
- Package Name: `slack-mcp-server`
- Registry: NPM (https://www.npmjs.com/package/slack-mcp-server)
- GitHub Repository: https://github.com/korotovsky/slack-mcp-server
- Vendor: korotovsky
- Latest Live Version: v1.3.0
- Published Date: 2026-05-14T22:55:54.869Z
- 90-Day Release Count: 0
- Direct Dependencies: 0
- License: MIT
- Stability Score: 86/100 (Grade B+)
- Schema Drift Risk: MEDIUM
- Recommended Exact Pin Command: `npx -y slack-mcp-server@1.3.0`
- Watched Symbols / MCP Tools: slack-mcp-server, tools/list, tools/call
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
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.

## Migration Diff: Before (Deprecated / Unpinned Pattern)
```
"slack-mcp-server": {
  "command": "npx",
  "args": ["-y", "slack-mcp-server@latest"]
}
```

## Migration Diff: After (Verified v1.3.0 Pattern)
```
"slack-mcp-server": {
  "command": "npx",
  "args": ["-y", "slack-mcp-server@1.3.0"]
}
```

## Recent Verified Releases
- v1.3.0 (published 2026-05-14) [LATEST]
- v1.2.3 (published 2026-03-03)
- v1.2.2 (published 2026-02-25)
- v1.1.28 (published 2025-12-09)
- v1.1.26 (published 2025-10-11)
- v1.1.25 (published 2025-09-28)