{"uid":"cap_hW9sHOtQYQ_gfWFyV9Yqj","slug":"mercury402-treasury-yield-curve-daily-snapshot-8d99d15a","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://mercury402.uk/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_AisozUHnfzBMGJ-11sfXq","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 (all maturities) for a specific date as a JSON object of rates","exampleAgentPrompt":"Can you pull the full US Treasury yield curve snapshot for March 11, 2026 — I need the rates across all maturities for that specific date.","exampleUseCases":null,"resultDescription":"A JSON object containing the requested date and a rates map keyed by maturity (e.g. 1_MONTH, 3_MONTH, and longer tenors) with annualized yield percentages for each maturity on that day","failureModes":["Date not found or market holiday — rates may be unavailable for weekends/holidays","Invalid date format returns a 400 or error response","Future dates return no data or an error","Payment not processed — 402 response requiring USDC payment on Base to proceed","Rate limiting or temporary upstream data unavailability"],"whenToPreferThis":"Use this endpoint when you need the complete US Treasury yield curve for a single specific date — ideal for historical research, backtesting, spread calculations, or checking rate levels on a particular day. Prefer this over macro bundles when you only need Treasury rates and want minimal cost per call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:44:50.752Z","isFirstParty":false}