{"uid":"cap_FK-u-WLZna1syrXYGWs7u","slug":"us-treasury-par-yield-curve-api-2281ca35","name":"US Treasury Par Yield Curve API","description":"US Treasury yield curve API: the latest Daily Treasury Par Yield Curve — yields in percent for 13 maturities from 1 month to 30 years, plus curve date, straight from the US Department of the Treasury. Public-domain government data, published each business day. Use for interest rate benchmarks, bond analysis, discount rates, and macro signals. Slow upstream (~10s) so served from a 6-hour cache; meta.fetchedAt shows when the curve was retrieved.","url":"https://gateway.stride20k.com/rates/us-treasury?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"data":{"series":"Daily Treasury Par Yield Curve Rates","curveDate":"2026-07-02","yieldsPct":{"1M":3.7,"1Y":3.96,"2Y":4.14,"3M":3.82,"5Y":4.23,"6M":3.98,"10Y":4.49,"30Y":4.98}},"meta":{"cached":false,"source":"US Treasury","fetchedAt":"2026-07-04T00:00:00.000Z","attribution":null},"endpoint":"/rates/us-treasury"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_N_XXisiduMAs-fYcbhEOh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the latest Daily Treasury Par Yield Curve with yields in percent for 13 maturities (1 month to 30 years) as published by the US Department of the Treasury","exampleAgentPrompt":"What are today's US Treasury par yields across all maturities — from 1 month out to 30 years — so I can use them as discount rates in my valuation model?","exampleUseCases":null,"resultDescription":"A JSON object with ok: true, plus a data object containing curveDate (YYYY-MM-DD business date), yieldsPct (par yields in percent keyed by maturity: 1M, 2M, 3M, 4M, 6M, 1Y, 2Y, 3Y, 5Y, 7Y, 10Y, 20Y, 30Y), and a meta object with the upstream source (US Treasury), a cached flag, and fetchedAt (ISO 8601 timestamp of last upstream fetch). Responses are cached up to 6 hours.","failureModes":["Upstream Treasury site slow or unavailable — stale cache may be returned or upstream timeout error","Treasury does not publish data on weekends/holidays — curveDate will reflect last business day","Cache miss on cold start may result in ~10s response latency","Non-2xx HTTP status if payment (x402) is not satisfied"],"whenToPreferThis":"Choose this endpoint when you need the official, authoritative US Treasury par yield curve published by the US government — ideal for risk-free rate benchmarks, DCF discount rates, bond spread analysis, or macro interest rate signals. Prefer this over scraped or third-party yield data sources when government provenance and auditability matter. The 6-hour cache makes it practical for intraday use without repeated slow upstream fetches.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:38:13.156Z","isFirstParty":false,"canonicalSlug":"us-treasury-par-yield-curve-api-2281ca35"}