{"tool":"abn-check","title":"ABN check (Australia)","description":"Validate an Australian Business Number by its mod-89 checksum (11 digits).","method":"POST","call":"/v1/tools/abn-check/call","input_schema":{"type":"object","required":["abn"],"properties":{"abn":{"type":"string","description":"11-digit Australian Business Number; spaces allowed."}}},"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":{"abn":"51 824 753 556"}},"docs":"https://rail.akrivis.in/openapi.json","mcp":"https://rail.akrivis.in/mcp"}