@modelcontextprotocol/server-slack

MCP Slack Server by Model Context Protocol

MCP server for interacting with Slack

Live Registry Versionv2025.4.25Previous: v2025.1.17Published 2025-04-25

Stability Grade

B+ (86/100)

90-Day Velocity

0 releases

Stable release cadence

Dependencies

1 direct

NPM manifest

License

MIT

Verified on NPM

Recommended Exact Pin: npx -y @modelcontextprotocol/server-slack@2025.4.25

NPM Registry ->GitHub Repo ->

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

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 past 90 days. v2025.4.25 requires SLACK_TEAM_ID and SLACK_BOT_TOKEN env vars; legacy workspace token auth fails. Production teams should pin npx -y @modelcontextprotocol/server-slack@2025.4.25 rather than using unpinned @latest tags.

Breaking Changes & Tool Schema Drift Analysis

v2025.4.25 requires SLACK_TEAM_ID and SLACK_BOT_TOKEN env vars; legacy workspace token auth fails.

Watched Exports / MCP Tool Signatures:

slack_list_channelsslack_post_messageslack_get_channel_history

Before (Deprecated / Unpinned Pattern)

"env": { "SLACK_TOKEN": "xoxb-..." }

After (Verified v2025.4.25 Pattern)

"env": { "SLACK_BOT_TOKEN": "xoxb-...", "SLACK_TEAM_ID": "T01234567" }

Frequently Asked Questions: @modelcontextprotocol/server-slack

What is the latest version of @modelcontextprotocol/server-slack on NPM?

As of 2026-10-24, the latest stable version of @modelcontextprotocol/server-slack (MCP Slack Server by Model Context Protocol) on NPM is v2025.4.25, published on 2025-04-25. It has shipped 0 releases in the last 90 days.

Does @modelcontextprotocol/server-slack v2025.4.25 have breaking changes or MCP schema drift risk?

@modelcontextprotocol/server-slack currently carries a MEDIUM schema drift risk rating with a Stability Score of 86/100 (Grade B+). v2025.4.25 requires SLACK_TEAM_ID and SLACK_BOT_TOKEN env vars; legacy workspace token auth fails.

How do I safely pin @modelcontextprotocol/server-slack in production?

Avoid unpinned @latest tags in production agent configs. Pin the exact verified version using `npx -y @modelcontextprotocol/server-slack@2025.4.25` and monitor slack_list_channels, slack_post_message, slack_get_channel_history for parameter or schema changes.

30-Min Registry & Schema Poller

Get Instant Breaking-Change Alerts for @modelcontextprotocol/server-slack

We poll NPM and modelcontextprotocol/servers-archived every 30 minutes. Get an email with the exact diff when @modelcontextprotocol/server-slack ships a breaking release beyond v2025.4.25.