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slack-mcp

slack-mcp is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from project-nomos/nomos-slack-mcp. Its token cost is not measured, scanned A, original, MIT.

A locally run MCP server that connects an AI agent to Slack, a team messaging and collaboration service.

In plain words
What is it for?
Use it to start the Slack server locally when you need the tools it exposes for working with a Slack workspace.
Why use it?
It provides a configured Slack connection without requiring the agent to implement the server integration itself.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it.

not rated 1repo 5mo ago A scan tokens not measured original MIT

Good fit Use it to start the Slack server locally when you need the tools it exposes for working with a Slack workspace.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/project-nomos/nomos-slack-mcp/slack-mcp
View source ↗ project-nomos/nomos-slack-mcp projectnomos.dev
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/project-nomos/nomos-slack-mcp

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for slack-mcp

README.md
[![agentmods](https://agentmods.dev/badge/mcp/project-nomos/nomos-slack-mcp/slack-mcp/github.svg)](https://agentmods.dev/mcp/project-nomos/nomos-slack-mcp/slack-mcp)
Your own site
<a href="https://agentmods.dev/mcp/project-nomos/nomos-slack-mcp/slack-mcp"><img src="https://agentmods.dev/badge/mcp/project-nomos/nomos-slack-mcp/slack-mcp/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for slack-mcp

Your own site · 80×15
<a href="https://agentmods.dev/mcp/project-nomos/nomos-slack-mcp/slack-mcp"><img src="https://agentmods.dev/badge/mcp/project-nomos/nomos-slack-mcp/slack-mcp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

slack-mcp scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

listed in the official MCP registry · 9 lines

What it actually says

{ "slack-mcp": { "command": "npx", "args": [ "-y", "@project-nomos/slack-mcp" ] } }

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 9 lines scan A 242f8dbc12ce

Subscribe to this mod's changes

slack-mcp is an MCP server published in the GitHub repository project-nomos/nomos-slack-mcp (1 stars, last pushed 5mo ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Claude CodeProject managementagentic-aimcpnomosslackslack-api
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