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Japan Postal Code Lookup (clonecho/builda)
x402
Japan Postal Code Lookup (clonecho/builda) is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Converts a Japanese postal code into the corresponding prefecture, city, and town names using zipcloud over Japan Post data.
Price / call$0.02
Success—
StatusUnknown
How this service works
Japan postal code to prefecture/city/town lookup (zipcloud over Japan Post data) Query: ?q= Returns JSON.
Output
A JSON object containing the prefecture, city, and town (district/neighborhood) names corresponding to the queried Japanese postal code, sourced from zipcloud over Japan Post data.
Example use cases
Example prompt
“What prefecture, city, and town correspond to Japanese postal code 150-0001?”
Technical details
Endpoint
POSThttps://clonecho.builda.company/x402/s/japan-postal-code-lookupWhen to prefer
Use this endpoint when you need to resolve a Japanese postal code (7-digit 〒 code) to its prefecture, city, and town components. Ideal for address auto-fill, validation of Japanese addresses, or enriching records that only contain a zip code. Backed by zipcloud over official Japan Post data for accuracy.
Side effects
- Invalid or malformed postal code returns empty results or error JSON
- Postal code not found in Japan Post database returns empty address array
- Missing ?q= parameter may return an error or empty response
- Network timeout or upstream zipcloud outage returns a non-200 response
Tags
x402
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