{"endpoint": "POST /v1/contact", "content_type": "application/json", "fields": {"name": "string, 2-80 chars (required)", "email": "string, valid email, <=160 chars (required)", "organization": "string, optional, <=120 chars", "topic": "one of ['sales', 'support', 'security', 'integration', 'other'] (required)", "message": "string, 20-2000 chars (required)", "website": "leave empty (honeypot)", "ts": "unix seconds when the form was rendered (form flow)"}, "rate_limit": "5 per 1h per IP", "success": "202 {received: true, reference: NSN-XXXXXXXX}"}