slack-fast-mcp

A Slack MCP server that gives AI assistants tools to read, search, and interact with Slack workspaces.

→ jeffmm/slack-fast-mcp · listed on glama

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// key findings

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

🔐

You'll be asked for 4 credentials: SLACK_MCP_XOXP_TOKEN, SLACK_MCP_XOXB_TOKEN, SLACK_MCP_XOXC_TOKEN, SLACK_MCP_XOXD_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.

🔐 secretSLACK_MCP_XOXP_TOKEN— export =xoxp-...

🔐 secretSLACK_MCP_XOXB_TOKEN— export =xoxb-...

🔐 secretSLACK_MCP_XOXC_TOKEN— export =xoxc-...

🔐 secretSLACK_MCP_XOXD_TOKEN— export =xoxd-...

configSLACK_MCP_ADD_MESSAGE_TOOL— conversations_add_message

configSLACK_MCP_REACTION_TOOL— reactions_add / reactions_remove

configSLACK_MCP_CACHE_TTL— 3600 Cache TTL in seconds, or duration string (1h, 30m, 3600s)

configSLACK_MCP_ADD_MESSAGE_MARK— false Mark channel as read when sending a message

configSLACK_MCP_LOG_LEVEL— info Log level (debug, info, warning, error)

configSLACK_MCP_ATTACHMENT_TOOL— attachment_get_data

configSLACK_MCP_ADD_MESSAGE_UNFURLING— "" Control link unfurling in sent messages

configXDG_CACHE_HOME

// 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 5 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/jeffmm-slack-fast-mcp-j9nmyz)](https://m8ven.ai/mcp/jeffmm-slack-fast-mcp-j9nmyz)

commit: 2828f8b2b9900477128a249f2d33267e91e027b0

code hash: b7ae42770c2f94de6a4835463a22be0ed9a8653a419a9922841bcce17dcae0ac

verified: 6/21/2026, 10:32:02 AM

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