GCP MCP

Instructions

    Set a quota project for Google Cloud API requests.
    
    This helps resolve the warning: "Your application has authenticated using end user credentials 
    from Google Cloud SDK without a quota project."
    
    Args:
        project_id: The ID of the GCP project to use for quota attribution
    
    Returns:
        Confirmation message if successful, error message otherwise
    

Implementation Reference

• src/gcp_mcp/gcp_modules/resource_management/tools.py:134-182 (handler)

  The main execution logic for the set_quota_project tool. Sets GOOGLE_CLOUD_QUOTA_PROJECT environment variable and attempts to update default credentials with quota project.

  @mcp.tool()
  def set_quota_project(project_id: str) -> str:
      """
      Set a quota project for Google Cloud API requests.
      
      This helps resolve the warning: "Your application has authenticated using end user credentials 
      from Google Cloud SDK without a quota project."
      
      Args:
          project_id: The ID of the GCP project to use for quota attribution
      
      Returns:
          Confirmation message if successful, error message otherwise
      """
      try:
          try:
              import google.auth
              from google.auth import exceptions
              import os
          except ImportError:
              return "Error: Required libraries not installed. Please install with 'pip install google-auth'."
          
          # Set the quota project in the environment variable
          os.environ["GOOGLE_CLOUD_QUOTA_PROJECT"] = project_id
          
          # Try to get credentials with the quota project
          try:
              # Get the current credentials
              credentials, project = google.auth.default()
              
              # Set the quota project on the credentials if supported
              if hasattr(credentials, "with_quota_project"):
                  credentials = credentials.with_quota_project(project_id)
                  
                  # Save the credentials back (this depends on the credential type)
                  # This is a best-effort approach
                  try:
                      if hasattr(google.auth, "_default_credentials"):
                          google.auth._default_credentials = credentials
                  except:
                      pass
                  
                  return f"Successfully set quota project to '{project_id}'. New API requests will use this project for quota attribution."
              else:
                  return f"Set environment variable GOOGLE_CLOUD_QUOTA_PROJECT={project_id}, but your credential type doesn't support quota projects directly."
          except exceptions.GoogleAuthError as e:
              return f"Error setting quota project: {str(e)}"
      except Exception as e:
          return f"Error setting quota project: {str(e)}"

• src/gcp_mcp/server.py:32-33 (registration)

  Registration of the resource management tools module, which includes the set_quota_project tool, via calling its register_tools function.

  # Register resource management tools
  resource_tools.register_tools(mcp)