No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
by korotovsky · MCP Server · ★ 1.8k
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
🔒 Is slack-mcp-server safe to install? View the security audit →
Slack MCP Server Model Context Protocol (MCP) server for Slack Workspaces. The most powerful MCP Slack server — supports Stdio, SSE and HTTP transports, proxy settings, DMs, Group DMs, Smart History fetch (by date or count), may work via OAuth or in complete stealth mode with no permissions and scopes in Workspace 😏. [!IMPORTANT] We need your support! Each month, over 30,000 engineers visit this repository, and more than 9,000 are already using it. If you appreciate the work our contributors have put into this project, please consider giving the repository a star. This feature-rich Slack MCP Server has: Stealth and OAuth Modes: Run the server without requiring additional permissions or bot installations (stealth mode), or use secure OAuth tokens for access without needing to refresh or extract tokens from the browser (OAuth mode). Enterprise Workspaces Support: Possibility to integrate with Enterprise Slack setups. Channel and Thread Support with : Fetch messages from channels and threads, including activity messages, and retrieve channels using their names (e.g., #general) as well as their IDs. Smart History: Fetch messages with pagination by date (d1, 7d, 1m) or message count.
| Stars | 1,838 |
| Forks | 370 |
| Language | Go |
| Category | MCP Server |
| License | MIT |
| Quality Score | 62.0323947366388/100 |
| Open Issues | 74 |
| Last Updated | 2026-07-16 |
| Created | 2025-04-12 |
| Platforms | go, mcp |
| Est. Tokens | ~22k |
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slack-mcp-server is The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic.. It is categorized as a MCP Server with 1.8k GitHub stars.
slack-mcp-server is primarily written in Go. It covers topics such as assistants, govslack, llm.
You can find installation instructions and usage details in the slack-mcp-server GitHub repository at github.com/korotovsky/slack-mcp-server. The project has 1.8k stars and 370 forks, indicating an active community.
slack-mcp-server is released under the MIT license, making it free to use and modify according to the license terms.
The top alternatives to slack-mcp-server on Agent Skills Hub include osaurus, klavis, lemonade. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.
Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
Sources & who's responsible: