slack-mcp-server (korotovsky/slack-mcp-server) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it yet. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
C
Caution
60/100

slack-mcp-server

The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic.

→ korotovsky/slack-mcp-server· npm: slack-mcp-server· listed on npm

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

⚡ Live Monitored: not connected

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Who stands behind it

korotovsky

Source: npm · also listed on github_topic, mcp.so

Is this your MCP?

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Install from

npmscored separatelyGitHubmcp.sonot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
✅
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 4 credentials: SLACK_MCP_XOXB_TOKEN, SLACK_MCP_XOXC_TOKEN, SLACK_MCP_XOXD_TOKEN, SLACK_MCP_XOXP_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configSLACK_MCP_ADD_MESSAGE_TOOLEnable message posting via conversations_add_message by setting it to true for all channels, a comma-separated list of channel IDs to whitelist specific channels, or use ! before a channel ID to allow all except specified ones. If empty, the tool is only registered when explicitly listed in SLACK_MCP_ENABLED_TOOLS.
🔐 secretSLACK_MCP_XOXB_TOKENBot token (xoxb-...) — alternative to xoxp/xoxc/xoxd. Bot has limited access (invited channels only, no search)
🔐 secretSLACK_MCP_XOXC_TOKENSlack browser token (xoxc-...)
🔐 secretSLACK_MCP_XOXD_TOKENSlack browser cookie d (xoxd-...)
🔐 secretSLACK_MCP_XOXP_TOKENUser OAuth token (xoxp-...) — alternative to xoxc/xoxd
// quality suggestions

Tools detected

No tools extracted — insufficient content to verify at Tier 2

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 0 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 Verified](https://m8ven.ai/badge/mcp/korotovsky/slack-mcp-server?variant=verified)](https://m8ven.ai/mcp/korotovsky/slack-mcp-server)
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commit: b88c0de3f706f4f07337c9eda7133c736d1c9524
code hash: b558ae2da1bf8a2fa36422dc39a7615810abcae13c33641b72aef65d995ce6b7
view raw JSON →
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