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slack-bridge

slack-bridge is an MCP server for Claude Code from pierreraii/claude-slack-bridge. Its token cost is not measured, scanned A, original, Apache-2.0.

A connection that lets an agent use Slack, a workplace chat service, through an MCP server.

In plain words
What is it for?
Use it when a coding workflow needs to connect to the configured Slack bridge.
Why use it?
It can provide access to Slack-related actions or information from the agent, but the supplied details do not say which actions are available.

MCP server for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: listed in a Claude config.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the slack-bridge plugin — 2 skills, 1 MCP server shipped together

not rated 1repo 4mo ago A scan tokens not measured original Apache-2.0

Good fit Use it when a coding workflow needs to connect to the configured Slack bridge.

Compare 6 mcp servers from other repositories ↓
View source ↗ pierreraii/claude-slack-bridge
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add pierreraii/claude-slack-bridge
Claude Code
/plugin install slack-bridge

Made for: Claude Code.

Or install slack-bridge, the plugin that ships this one along with the rest of its 2 skills, 1 MCP server.

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-bridge

README.md
[![agentmods](https://agentmods.dev/badge/mcp/pierreraii/claude-slack-bridge/slack-bridge/github.svg)](https://agentmods.dev/mcp/pierreraii/claude-slack-bridge/slack-bridge)
Your own site
<a href="https://agentmods.dev/mcp/pierreraii/claude-slack-bridge/slack-bridge"><img src="https://agentmods.dev/badge/mcp/pierreraii/claude-slack-bridge/slack-bridge/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-bridge

Your own site · 80×15
<a href="https://agentmods.dev/mcp/pierreraii/claude-slack-bridge/slack-bridge"><img src="https://agentmods.dev/badge/mcp/pierreraii/claude-slack-bridge/slack-bridge.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-bridge 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.

.mcp.json · 13 lines

What it actually says

{
  "slack-bridge": {
    "command": "bun",
    "args": [
      "run",
      "--cwd",
      "${CLAUDE_PLUGIN_ROOT}",
      "--shell=bun",
      "--silent",
      "start"
    ]
  }
}
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 · 13 lines scan A 6981af16d997

Subscribe to this mod's changes

slack-bridge is an MCP server published in the GitHub repository pierreraii/claude-slack-bridge (1 stars, last pushed 4mo ago), licensed Apache-2.0. 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 CodeProductivityclaude-code-pluginmcpslackslack-botwhisper
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