peacock

Defined in hooks/hooks.json

{
  "SessionStart": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "${CLAUDE_PLUGIN_ROOT}/hooks/session-start.sh"
        }
      ]
    }
  ]
}

"On SessionStart, runs 'gnosis-mcp check' asynchronously to verify database reachability. Warns via stderr if unreachable, referencing GNOSIS_MCP_DATABASE_URL. 5s timeout."