Summary

Firebase tools MCP not auth with ADC

Bug Info

• Affected Tool(s): All tools
• MCP Client: @modelcontextprotocol/inspector
• Operating System: Macos 14.7

Steps to Reproduce

1. Run command: gcloud auth application-default login
2. Call tools firebase tools mcp: npx @modelcontextprotocol/inspector --cli npx -y firebase-tools@latest experimental:mcp --method tools/call --tool-name firebase_create_project --tool-arg project_id="{{SAMPLE_NAME_HERE}}"

If run tool/list. I got this meta data:

  "_meta": {
    "projectRoot": "{{ dir }}",
    "projectDetected": false,
    "authenticatedUser": null,
    "activeFeatures": [],
    "detectedFeatures": []
  }