{"message":"This is an API-only service. Please use the API endpoints.","endpoints":{"POST \/api\/form-submission":"Submit any form","POST \/api\/contact-us":"Submit contact form","POST \/api\/custom-form":"Submit custom form","GET \/api\/form-submissions":"Get all submissions (admin)","GET \/api\/form-submissions\/{id}":"Get specific submission (admin)"},"authentication":"All POST endpoints require X-API-Key header","rate_limit":"10 requests per hour per IP"}