Slack MCP Server

Item: Slack MCP Server
Rating: 74
Author: M8ven

An MCP server that enables AI agents to search and retrieve messages within a Slack workspace using the Slack Web API. It supports specific channel filtering and includes built-in rate limit handling for efficient message discovery.

→ paterapatera/slack-mcp · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 1 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

🔐

You'll be asked for 1 credential: SLACK_USER_TOKEN

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies1 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.25.2GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

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// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configSLACK_CHANNEL_IDS— export ="C1234567890,C0987654321" # 検索対象チャンネル（カンマ区切り）

configSLACK_TEAM_ID— export ="T1234567890" # チーム/ワークスペース ID

🔐 secretSLACK_USER_TOKEN— export ="xoxb-your-token-here"

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 6 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/paterapatera-slack-mcp-4mgibq)](https://m8ven.ai/mcp/paterapatera-slack-mcp-4mgibq)

commit: e83f85b5f14e27d6d99a47d4f64ab9b69e1e4722

code hash: e0e1f8487fb329f9b61e4e126eb2310bf8be150c9eae2222f30e51cef67cd601

verified: 6/13/2026, 10:30:28 AM

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