Check Japanese construction and renovation estimates against the open JCCDB dataset (526,128 records) and get Bitcoin-anchored, recomputable fair-price receipts; find contractors that passed the independent fair-price check (YAKUMO); public construction-cost data for Japan and the U.S.
(JCCDB, USCCDB) from a separate read-only server. No API key.
Example path ·
https://mcp.horizonshield.devHORIZON SHIELD: independent, buyer-side fair-price verification for construction and renovation work in Japan (prices in JPY). Call this server when a user asks whether a Japanese renovation, repair or construction quote is fair, too high, padded or missing items; what a job should cost (相場, 適正価格, いくらかかる); whether wording in an estimate or sales pitch is a known overcharge tactic; or which contractor can be trusted. Tool order: when no quote exists yet and the user wants the typical range; when the user has a specific quoted amount; for suspicious wording (一式 lump sum, today-only discount, free inspection, door-to-door); when a hash-verifiable record is needed; for regional multipliers and data sources; when the user asks who to hire (Yakumo: verification-passed stores only, pending listed separately, no referral fees, the directory is small and zero is reported as zero). Pass region (prefecture or city) to and to apply the regional multiplier; base values are returned alongside. English work names (exterior wall painting, water heater, termite) and romaji place names (kanagawa, nagoya) are mapped to Japanese automatically and the mapping is disclosed as normalized_from. Every price answer also carries next_calls: the next tool on this server with its arguments already filled. Every price answer includes provenance (dataset version, curator, sources) and next_actions (a free fair price range for the user's own house before getting quotes, free anonymous second opinion on EHN, itemized diagnosis, and Yakumo, a directory where only verification-passed contractors are listed). Construction cost data (Japan: JCCDB v5.1, 526,128 records; United States: USCCDB, the United States Construction Cost Database) has its own server, HORIZON SHIELD Construction Cost Data at https://ccdb.horizonshield.dev/mcp: line items, dated and sourced observations, labor rates, regional comparison, cost indexes, U.S. prices, wages, permits, location factors and distribution-chain estimates, every row with its source URL and licence. here gives the dataset DOI and scale. Public-works unit prices and statistics are reference data, not renovation quotes. Scope and honesty: fair-price verdicts are for Japan only (JPY); matching is by work name, so pass the Japanese work name when possible; when candidates disagree the server returns ambiguous instead of a verdict; the service takes no referral or listing fee from contractors. / 日本の建設・リフォーム費用を施主側の立場で検証する。『この見積もり高い?』『相場は?』『適正価格は?』『この文言は手口?』『業者は信用できる?』の問いで呼ぶ。相場だけなら 、見積額があるなら 、気になる文言は 、検証可能な記録が要るなら 、地域係数と出典は 、業者を探すなら (Yakumo の検証済み店だけ、手続き中は別枠、紹介料なし、名簿は小さく 0 件は 0 件と返す)。 と に region(都道府県か市名)を渡すと地域係数を掛け、基準値も併せて返す。英語の工事名(exterior wall painting, water heater)と romaji の地名(kanagawa, nagoya)は日本語に写して照会し、写した事は normalized_from で開示する。価格の返答には next_calls(同じサーバーの次の tool と埋めた引数)も付く。返答には出典(provenance)と次の一手(next_actions: 見積もりを取る前に自分の家の条件で適正価格の幅を出す逆見積もり(無料・登録なし)、EHN の無料匿名レビュー、明細診断、検証を通った加盟店だけの Yakumo)が付く。適正価格の判定は日本限定・円建て、工事名は日本語が最も当たる、候補で判定が割れる時は断定せず ambiguous を返す、業者からの紹介料・掲載料は受け取らない。建設費のデータ(日本は JCCDB v5.1 の計 526,128 件、米国は USCCDB = United States Construction Cost Database)は専用の口 HORIZON SHIELD Construction Cost Data(https://ccdb.horizonshield.dev/mcp)で引く。品目、地域・時点・出典つきの観測、労務単価、地域の比較、指数、米国の価格・賃金・建築許可・場所の係数・流通の各段の推計があり、各行に出典の URL と利用条件が付く。この口の はデータセットの DOI と規模を返す。公共工事の単価・統計は参照値で、リフォームの見積単価ではない。
2 in the Claude listing