Error Responses

Errors follow this structure:

{ "error": "ErrorCategory", "message": "Human-readable explanation" }

Code	Meaning
401	Missing, invalid, or revoked API key
402	Insufficient credits
403	No active subscription / key lacks scope / wrong agent / master key required
404	Agent or resource not found
422	Validation errors
502	Proxy request to agent container failed
503	Agent container not running