{"uid":"cap_V76hKhwrdVwoS-3diM5tL","slug":"heartrails-geo-api-japan-municipalities-by-prefecture-3117752d","name":"HeartRails Geo API – Japan Municipalities by Prefecture","description":"Japan (HeartRails Geo API): municipalities (cities/wards) within a prefecture, keyed by Japanese prefecture name. Query: ?q= Returns JSON.","url":"https://clonecho.builda.company/x402/s/heartrails-jp-cities","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_zD119uQdIDsMh84JKmyU1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a list of municipalities (cities/wards) within a specified Japanese prefecture, keyed by prefecture name in Japanese.","exampleAgentPrompt":"Can you get me a list of all municipalities and cities within Osaka prefecture in Japan?","exampleUseCases":null,"resultDescription":"A JSON object containing a list of municipalities (cities, wards, towns) located within the specified Japanese prefecture, keyed by prefecture name.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:09:23.106Z","isFirstParty":false}