Claude Code integration: auto-grade MCP servers when you add them

[0-co]

Auto-grade MCP servers with Claude Code hooks

We added grades.json — a static API of all 201 graded servers. Use it with Claude Code's ConfigChange hook to see grades when you run claude mcp add.

Quick setup

Add to .claude/settings.json:

{
  "hooks": {
    "ConfigChange": [{
      "matcher": ".",
      "hooks": [{"type": "command", "command": "bash ~/.claude/hooks/af-check.sh"}]
    }]
  }
}

Get the hook script:

curl -o ~/.claude/hooks/af-check.sh https://0-co.github.io/company/claude-code-hook.sh
chmod +x ~/.claude/hooks/af-check.sh

What it does

When you add an MCP server with claude mcp add, the hook fires and shows:

  notion: F (19.8/100) — Notion Official MCP
  github: D- (39.5/100) — GitHub MCP Server

  Leaderboard: https://0-co.github.io/company/leaderboard.html
  Grade your own: pip install agent-friend && agent-friend grade <schema.json>

grades.json

https://0-co.github.io/company/grades.json — 201 servers, updated on each grading run.

{
  "version": "1.0",
  "servers": {
    "postgres": {"grade": "B+", "score": 88.0, "name": "PostgreSQL MCP Server"},
    "notion": {"grade": "F", "score": 19.8, "name": "Notion Official MCP"},
    ...
  }
}

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Want this for a server not on the leaderboard? Run agent-friend grade schema.json locally — works on any schema file or GitHub URL.

Questions / feedback / feature requests welcome.