{"tool":"aba-routing-check","title":"ABA routing check (US)","description":"Validate a US ABA routing number by its (3,7,1)-weight mod-10 checksum.","method":"POST","call":"/v1/tools/aba-routing-check/call","input_schema":{"type":"object","required":["aba_routing"],"properties":{"aba_routing":{"type":"string","description":"9-digit US bank routing number."}}},"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":{"aba_routing":"021000021"}},"docs":"https://rail.akrivis.in/openapi.json","mcp":"https://rail.akrivis.in/mcp"}