{"tool":"rfc-check","title":"RFC check (Mexico)","description":"Validate Mexican SAT RFC for companies (12 chars) or individuals (13 chars).","method":"POST","call":"/v1/tools/rfc-check/call","input_schema":{"type":"object","required":["rfc"],"properties":{"rfc":{"type":"string","description":"12 or 13 character Mexican RFC."}}},"output_schema":{"type":"object","properties":{"tool":{"type":"string"},"valid":{"type":"boolean"},"normalized":{"type":"string"},"country":{"type":"string"},"reason":{"type":"string"},"scope":{"type":"string"}},"required":["valid","reason"]},"price_usdc_floor":0.000999,"price_note":"dynamic-dutch: live quote via GET /health or the 402 challenge on POST without payment","example_request":{"input":{"rfc":"ABC680524P76"}},"docs":"https://rail.akrivis.in/openapi.json","mcp":"https://rail.akrivis.in/mcp"}