# MCP Slack Server (@modelcontextprotocol/server-slack) - AgentBreakWatch Reference

> TL;DR Verdict: MCP Slack Server (`@modelcontextprotocol/server-slack`) is currently at v2025.4.25 on NPM (published 2025-04-25), with a 90-day Stability Score of 86/100 (B+) and MEDIUM schema drift risk across 0 releases in the last 90 days. v2025.4.25 requires SLACK_TEAM_ID and SLACK_BOT_TOKEN env vars; legacy workspace token auth fails.

## Live Telemetry Metadata
- Canonical Page: https://agentbreakwatch.vercel.app/p/mcp-server-slack
- Category Hub: https://agentbreakwatch.vercel.app/c/official-reference (Official Reference MCP Servers Stability & Migration Index)
- Package Name: `@modelcontextprotocol/server-slack`
- Registry: NPM (https://www.npmjs.com/package/@modelcontextprotocol/server-slack)
- GitHub Repository: https://github.com/modelcontextprotocol/servers-archived
- Vendor: Model Context Protocol
- Latest Live Version: v2025.4.25
- Published Date: 2025-04-25T08:27:22.626Z
- 90-Day Release Count: 0
- Direct Dependencies: 1
- License: MIT
- Stability Score: 86/100 (Grade B+)
- Schema Drift Risk: MEDIUM
- Recommended Exact Pin Command: `npx -y @modelcontextprotocol/server-slack@2025.4.25`
- Watched Symbols / MCP Tools: slack_list_channels, slack_post_message, slack_get_channel_history
- Snapshot Timestamp: 2026-10-24T12:11:27.697Z

## Breaking Change & Schema Drift Summary
v2025.4.25 requires SLACK_TEAM_ID and SLACK_BOT_TOKEN env vars; legacy workspace token auth fails.

## Migration Diff: Before (Deprecated / Unpinned Pattern)
```
"env": { "SLACK_TOKEN": "xoxb-..." }
```

## Migration Diff: After (Verified v2025.4.25 Pattern)
```
"env": { "SLACK_BOT_TOKEN": "xoxb-...", "SLACK_TEAM_ID": "T01234567" }
```

## Recent Verified Releases
- v2025.4.25 (published 2025-04-25) [LATEST]
- v2025.1.17 (published 2025-01-17)
- v0.6.2 (published 2024-12-04)
- v0.6.1 (published 2024-12-03)
- v0.6.0 (published 2024-12-03)
- v0.5.1 (published 2024-11-25)