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HeartRails Geo API – Japan Municipalities by Prefecture
x402
HeartRails Geo API – Japan Municipalities by Prefecture is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns a list of municipalities (cities/wards) within a specified Japanese prefecture, keyed by prefecture name in Japanese.
Price / call$0.02
Success—
StatusUnknown
How this service works
Japan (HeartRails Geo API): municipalities (cities/wards) within a prefecture, keyed by Japanese prefecture name. Query: ?q= Returns JSON.
Output
A JSON object containing a list of municipalities (cities, wards, towns) located within the specified Japanese prefecture, keyed by prefecture name.
Example use cases
Example prompt
“Can you get me a list of all municipalities and cities within Osaka prefecture in Japan?”
Technical details
Endpoint
POSThttps://clonecho.builda.company/x402/s/heartrails-jp-citiesWhen to prefer
Use this endpoint when you need to enumerate municipalities, cities, or wards within a specific Japanese prefecture by name. Ideal for building location pickers, validating Japanese addresses, or enriching data with administrative geography for Japan.
Side effects
- Invalid or misspelled prefecture name returns empty or error result
- Missing ?q= parameter may return an error or empty response
- Non-Japanese prefecture name may not be recognized
- API may return unexpected structure if HeartRails upstream changes
Tags
x402
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