{"uid":"cap_8CRUDVUY69fyOBLo8oOuu","slug":"mercury402-treasury-yield-curve-daily-snapshot-57733576","name":"Mercury402 Treasury Yield Curve Daily Snapshot","description":"76 live pay-per-call financial data APIs for AI agents. Treasury, FRED, forex, spreads, breakeven inflation, macro bundles, and composite dashboards. USDC on Base.","url":"https://api.mercury402.com/v1/treasury/yield-curve/daily-snapshot","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"date":{"type":"string","description":"Specific date for yield curve (YYYY-MM-DD)"}}},"responseSchema":{"type":"json","example":{"date":"2026-03-11","rates":{"1_MONTH":5.42,"3_MONTH":5.38}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JFnXIJLYTrsfShhKJdPrY","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the full US Treasury yield curve rates for a specific date, covering maturities from 1-month to 30-year.","exampleAgentPrompt":"Pull the US Treasury yield curve daily snapshot for March 11, 2026 — I need all the rates across maturities.","exampleUseCases":[{"title":"Macro research yield curve check","prompt":"What did the Treasury yield curve look like on January 15, 2025? Give me all the rates from the 1-month bill out to the 30-year bond."},{"title":"Detecting yield curve inversion","prompt":"Fetch the Treasury yield curve snapshot for October 3, 2023 — I want to see if the curve was inverted that day by comparing short-term and long-term rates."},{"title":"Risk-free rate input for valuation model","prompt":"I need the daily Treasury yield curve for December 31, 2024 to use as the risk-free rate baseline in my discounted cash flow model."}],"resultDescription":"A JSON object containing the requested date and a map of Treasury maturities (e.g. 1_MONTH, 3_MONTH, 6_MONTH, 1_YEAR, 2_YEAR, 5_YEAR, 10_YEAR, 30_YEAR) to their corresponding annualized yield rates in percent.","failureModes":["Date not yet available — Treasury data may lag by 1 business day; returns error if date is too recent","Weekend or holiday date — no Treasury data published; may return empty or error","Invalid date format — must be YYYY-MM-DD; malformed dates return 400","Future date — yields not available for dates in the future","Payment failure — USDC payment not confirmed, returns 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when you need a complete point-in-time snapshot of the US Treasury yield curve for a specific date — ideal for historical analysis, risk-free rate inputs, yield curve shape analysis, or macro research. Prefer over real-time streaming feeds when a single dated snapshot is sufficient and cost efficiency matters at $0.05 per call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:51:48.661Z","isFirstParty":false}