{"schema_version":"1.0","service_name":"Charta Visa","service_url":"https://chartavisa.com","agent_api":{"base_url":"https://chartavisa.com/api/v1/agent","authentication":{"methods":["bearer_token","guest_mode"],"key_header":"Authorization","alternative_header":"X-Agent-Trust-Token","sandbox_key_url":"https://chartavisa.com/api/v1/agent/keys","note":"Guest mode (no key) covers eligibility, quote, schemas, validate, checkout, and apply. Self-issue a sandbox/test key at POST /api/v1/agent/keys. Live keys are generated automatically after the first paid checkout and shown in the account dashboard."},"rate_limits":{"requests_per_minute":60,"note":"Rate limits are per API key. Contact support for higher limits."}},"permissions":{"read_schemas":{"allowed":true,"auth_required":false,"note":"Pricing, eligibility, and full field schemas all available without payment"},"submit_applications":{"allowed":true,"auth_required":false,"note":"Payment required before submission"},"check_status":{"allowed":true,"auth_required":true},"register_webhooks":{"allowed":true,"auth_required":true}},"captcha":{"required":false,"type":"none","note":"Charta Visa uses Proof-of-Trust authentication instead of CAPTCHAs."},"data_usage":{"stores_agent_data":false,"shares_with_third_parties":false,"note":"Application data is used solely for visa processing."},"contact":{"support_email":"support@chartavisa.com","documentation":"https://chartavisa.com/api/v1/agent/discovery"}}