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Japanese Postal Code to Address Lookup (jp-data-api)
x402
Japanese Postal Code to Address Lookup (jp-data-api) is a paid API for AI agents from jp-data-api-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Converts a 7-digit Japanese postal code (zip) into structured address components: prefecture, city, and town in kanji, kana reading, and Hepburn romaji
Price / call$0.005
Success—
StatusUnknown
How this service works
Japanese address validation and postal code lookup: 7-digit zip to prefecture/city/town with kana reading and Hepburn romaji. Use for shipping address verification, e-commerce checkout to Japan, logistics, KYC identity verification, CRM data cleaning, form autofill.
Output
Returns the full address breakdown for the given Japanese postal code, including prefecture, city, and town names in kanji, their kana readings, and Hepburn romaji transliterations — suitable for shipping forms, KYC verification, or CRM enrichment.
Example use cases
Example prompt
“Can you look up the Japanese address for postal code 1000001 and give me the prefecture, city, and town name in both kanji and romaji?”
Technical details
Endpoint
GEThttps://jp-data-api-production.up.railway.app/address/normalizeWhen to prefer
Use this endpoint when you need to resolve, validate, or autofill Japanese addresses from a postal code, especially when you need multi-script output (kanji, kana, romaji). Prefer it over generic geocoding APIs when the specific requirement is Japan postal code structure with kana/romaji support for e-commerce, logistics, or KYC workflows.
Side effects
- Invalid or non-existent 7-digit zip code returns an error or empty result
- Zip code with fewer or more than 7 digits rejected as malformed
- Zip code for a newly created or updated postal district may not be in the dataset
- Network timeout or Railway hosting downtime returns HTTP 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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