Claude MCP Slack

Enables secure downloading and access to Slack files and images using authenticated Bot User OAuth tokens. Integrates with Claude Code Action to allow Claude to analyze screenshots and files shared in Slack channels.

→ atlasfutures/claude-mcp-slack · listed on glama

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// key findings

⚠️

Known vulnerabilities in dependencies: 3 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.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

🔐

You'll be asked for 2 credentials: SLACK_BOT_TOKEN, SLACK_TOKEN

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

// required environment variables

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

configDOWNLOAD_DIRECTORY— Resolved absolute path for downloads

configGITHUB_ACTION_PATH

configGITHUB_WORKSPACE

🔐 secretSLACK_BOT_TOKEN

🔐 secretSLACK_TOKEN— slack_token: ${{ secrets. }}

// 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 4 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/atlasfutures-claude-mcp-slack-tjjxe4)](https://m8ven.ai/mcp/atlasfutures-claude-mcp-slack-tjjxe4)

commit: b28ad7fd632c0c71d40f12a643cf119cfaaccec3

code hash: c2a21faf905503f994442a6748104987bcf6c9f3f8667bc009b4dbe8822efa99

verified: 6/17/2026, 12:44:20 PM

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