{"uid":"cap_KFT5HXUyIyH-sW63n5Iz0","slug":"us-treasury-average-interest-rates-e6e87ed2","name":"US Treasury Average Interest Rates","description":"Monthly average interest rates the US Treasury pays on its outstanding securities, from the official FiscalData API (Average Interest Rates dataset, updated monthly). Query: ?security=Treasury Bills (exact security_desc, optional; e.g. Treasury Notes, Treasury Bonds) &since=2026-01-01 (optional record_date floor) &limit=12 (1-100, newest first). Returns record_date, security type/name and avg rate in percent. Cached 24h.","url":"https://x402-datashop-production.up.railway.app/v1/us/treasury-rates","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"limit":{"type":"integer","default":12,"description":"Max records, newest first (1-100)"},"since":{"type":"string","description":"Only records with record_date >= this ISO date"},"security":{"type":"string","description":"Exact security_desc filter, e.g. Treasury Bills"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_5cFZC6HaxhmuRTAlup5mc","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 monthly average interest rates the US Treasury pays on outstanding securities, sourced from the official FiscalData API, filterable by security type and date range.","exampleAgentPrompt":"Can you pull the last 12 months of average interest rates the US Treasury is paying on Treasury Bills, going back to January 2024?","exampleUseCases":null,"resultDescription":"A list of monthly records (newest first, up to the requested limit) each containing record_date, the security description (e.g. Treasury Bills, Treasury Notes), and the average interest rate in percent. Results are cached for 24 hours and sourced from the official US Treasury FiscalData API.","failureModes":["Invalid or misspelled security_desc returns no results or an error","since date in wrong format (not ISO date) causes a 400 bad request","limit outside 1-100 range is rejected","Upstream FiscalData API unavailable causes a 502 or cached stale response","Requesting data before the dataset's earliest record returns empty results"],"whenToPreferThis":"Use this endpoint when you need official, government-sourced monthly average interest rates the US Treasury pays on its outstanding securities (Bills, Notes, Bonds, etc.). Prefer this over third-party rate aggregators when regulatory accuracy and official sourcing matter, or when you need historical monthly series going back several years.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:46:15.115Z","isFirstParty":false}