Atlas / Categories / Government / LocalGov.jp Government — entry 036 of 90
LocalGov.jp Verified Jul 2026
LocalGov.jp is an independent developer's structured-data layer over Japan's national J-Grants system and 1,600+ municipal grant and subsidy programmes, plus a furusato nozei (hometown tax) gift database, normalized into JSON and AI-agent-friendly Markdown. Nearly every endpoint is free and keyless with CORS wide open to any origin, re-confirmed live against the real search API; a handful of premium AI-analysis endpoints use x402 USDC micropayments instead of a traditional key. It's not an official government site — it's a third-party aggregator that requires attribution back to each original government source.
government-data japan grants ai-agents open-data
Authentication None required Call it straight away — no key, no signup.
HTTPS Supported Traffic is encrypted in transit.
CORS Enabled Callable directly from browser JavaScript.
Pricing Freemium A usable free tier exists, with paid plans for more volume.
Formats JSON, Markdown Responses can be requested as JSON or Markdown.
GreatAPIs Score Score 97 out of 100
Authentication 25/25 No authentication required
Pricing 17/20 Freemium tier available
Docs 20/20 Machine-readable spec file bundled
Formats 15/15 Supports 2 response formats
Freshness 20/20 Verified within 6 months
Embed this badge <a href="https://greatapis.com/api/localgov-jp/"><img src="https://greatapis.com/badge/localgov-jp.svg" alt="Scored 97 on greatapis.com"></a>
Auth quickstart No key needed — call it now. Stored key No key stored Clear key
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Endpoints api 21 POST /api/export/grantsバルクエクスポート（x402 課金） Responses Status Description Schema 200バルクJSON — 402x402 Payment Required —
GET /api/furusato/change_detectfurusato_events 差分 feed ($1.00 paid) Parameters Name In Required Type since_isoquery no string muni_codequery no string gift_idquery no string limitquery no integer
Responses Status Description Schema 200差分イベント一覧 — 402x402 Payment Required —
GET /api/furusato/cite/{gift_id}引用ヘルパー — citation-grade source_url + markdown/html 文字列 Parameters Name In Required Type gift_idpath yes string
Responses Status Description Schema 200citation envelope —
GET /api/furusato/coverage網羅状況 (gifts/munis/prefectures カウント) + transparency note Responses Status Description Schema 200coverage snapshot —
GET /api/furusato/limit控除上限額シミュレーション (GET — querystring) Parameters Name In Required Type annual_income_jpyquery yes integer marital_statusquery no string partner_income_jpyquery no integer dependents_adultquery no integer dependents_elderlyquery no integer dependents_universityquery no integer dependents_minorquery no integer social_insurance_jpyquery no integer other_deductions_jpyquery no integer income_typequery no string
Responses Status Description Schema 200上限額の概算 + breakdown —
POST /api/furusato/limit控除上限額シミュレーション (POST — JSON body) Request body application/json
Responses Status Description Schema 200上限額の概算 + breakdown —
GET /api/furusato/municipalities/{muni_code}/gifts指定自治体の active 返礼品一覧 Parameters Name In Required Type muni_codepath yes string limitquery no integer
Responses Status Description Schema 200自治体別返礼品リスト —
GET /api/furusato/portal_options/{gift_id}寄付経路 (全ポータル並列 + 自治体公式直接) の一覧 Parameters Name In Required Type gift_idpath yes string
Responses Status Description Schema 200ポータル並列リスト + disclosure —
GET /api/furusato/recommendAI rerank 推薦 ($0.50 paid) Parameters Name In Required Type prefecturequery no string categoryquery no string subcategoryquery no string budget_min_jpyquery no integer budget_max_jpyquery no integer notesquery no string limitquery no integer
Responses Status Description Schema 200推薦結果 + rerank_status — 402x402 Payment Required —
GET /api/furusato/searchふるさと納税 返礼品の横断検索 Parameters Name In Required Type keywordquery no string prefecturequery no string muni_codequery no string categoryquery no string subcategoryquery no string min_amountquery no integer max_amountquery no integer min_return_ratequery no number sortquery no string limitquery no integer offsetquery no integer
Responses Status Description Schema 200返礼品検索結果 —
GET /api/furusato/semantic_searchSemantic search (Workers AI bge-m3 → Vectorize)。 binding 未活性化時は FTS5 fallback Parameters Name In Required Type qquery yes string prefecturequery no string categoryquery no string muni_codequery no string limitquery no integer
Responses Status Description Schema 200engine=workers_ai_bge_m3_v1 | fts5_fallback —
GET /api/furusato/stats/{muni_code}自治体別ふるさと納税統計 (受入額・受入件数・流出額 + 公式問い合わせ先 + schema.org) Parameters Name In Required Type muni_codepath yes string
Responses Status Description Schema 200総務省統計 + 公式 contact + schema.org/GovernmentOrganization —
GET /api/furusato/top_moversイベント発生数の多い返礼品 Top N ($0.20 paid) Parameters Name In Required Type windowquery no string limitquery no integer prefecturequery no string categoryquery no string muni_codequery no string
Responses Status Description Schema 200重み付け score でランクされた gifts — 402x402 Payment Required —
GET /api/furusato/use_history/{muni_code}寄付金使途実績 (年次・purpose 別、 citation 強化版) ($0.30 paid) Parameters Name In Required Type muni_codepath yes string
Responses Status Description Schema 200使途実績 + _source_with_page — 402x402 Payment Required —
POST /api/furusato/webhooks/subscribefurusato push event subscription ($0.20 paid, TTL 30d) Request body application/json
Responses Status Description Schema 200subscription_id + expires_at — 402x402 Payment Required —
GET /api/furusato/{gift_id}返礼品の詳細を取得 Parameters Name In Required Type gift_idpath yes string Acceptheader no string
Responses Status Description Schema 200返礼品詳細 (JSON or Markdown) — 404gift_id 不存在 —
GET /api/furusato/{gift_id}/price_history返礼品の価格・還元率の時系列推移 ($0.30 paid) Parameters Name In Required Type gift_idpath yes string daysquery no integer
Responses Status Description Schema 200時系列の amount/rate changes — 402x402 Payment Required —
POST /api/grants/match事業者プロファイルからマッチする補助金を提案 Request body application/json
Responses Status Description Schema 200マッチング結果（関連度順） —
GET /api/grants/search補助金を検索 Parameters Name In Required Type keywordquery no string prefecturequery no string municipality_codequery no string open_onlyquery no boolean min_amountquery no integer sortquery no string limitquery no integer offsetquery no integer
Responses Status Description Schema 200検索結果（JSON） —
GET /api/grants/{id}個別補助金の詳細を取得 Parameters Name In Required Type idpath yes string Acceptheader no string
Responses Status Description Schema 200補助金詳細 — 404見つからない —
GET /api/local/{code}/grants指定市町村の補助金一覧 Parameters Name In Required Type codepath yes string
Responses Status Description Schema 200市町村別補助金リスト —
v1 2 GET /v1/healthヘルスチェック（無料） Responses Status Description Schema 200OK —
GET /v1/health/status集計status（無料） Responses Status Description Schema 200カウント・predicate —
Developer reference Base URL https://localgov.jp
Key endpoints GET /api/grants/search GET /api/grants/{id} GET /api/furusato/search
Availability Uptime 100%
Median latency 1137 ms
Last check Up · 200 · Sep 2026
5 checks since Aug 2026. A person runs this check by hand, not an automated monitor.
