{"tool":"company-number-format","title":"UK company-number format","description":"Validate UK Companies House number format (not existence).","method":"POST","call":"/v1/tools/company-number-format/call","input_schema":{"type":"object","required":["company_number"],"properties":{"company_number":{"type":"string","description":"8 digits, or 2 letters + 6 digits."}}},"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":{"company_number":"12345678"}},"docs":"https://rail.akrivis.in/openapi.json","mcp":"https://rail.akrivis.in/mcp"}