{"uid":"cap_79QVQwMc_iZwSSs6rHFJO","slug":"us-treasury-interest-costs-df1eca19","name":"US Treasury Interest Costs","description":"US Treasury interest rates — latest monthly average rates on outstanding government debt, including Treasury bills, notes, bonds, TIPS, floating-rate notes and savings securities. Track federal borrowing costs and compare rates across security classes.","url":"https://us-treasury-interest.use.x402atlas.com/latest?utm_source=zero.xyz","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"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["record_date","count","rates"],"properties":{"count":{"type":"integer","description":"Number of rates returned."},"rates":{"type":"array","items":{"type":"object","required":["security_type","security","avg_interest_rate_pct"],"properties":{"security":{"type":"string","description":"Security class, e.g. Treasury Bills."},"security_type":{"type":"string","description":"Marketable, Non-marketable or Interest-bearing Debt."},"avg_interest_rate_pct":{"type":"number","description":"Average interest rate, in percent."}}}},"record_date":{"type":"string","format":"date","description":"Month-end date (YYYY-MM-DD) the rates are for."}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qKMRlCYa7eB0MI1l8Pf9t","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the latest monthly average interest rates the US Treasury pays on its outstanding debt, broken down by security type (T-bills, Notes, Bonds, TIPS, FRNs, savings securities, and total).","exampleAgentPrompt":"What is the latest average interest rate the US Treasury is paying on each of its debt securities — T-bills, notes, bonds, TIPS, FRNs, and savings securities — as of the most recent month?","exampleUseCases":[{"title":"Tracking government borrowing cost trend","prompt":"What average interest rate is the US Treasury currently paying across all its interest-bearing debt? I want to see a breakdown by security type for the latest month."},{"title":"Fixed income research on T-bill rates","prompt":"Can you pull the current average interest rate the Treasury is paying on T-bills? I'm comparing short-term government borrowing costs for a fixed income report."},{"title":"Monitoring inflation impact on TIPS rates","prompt":"What's the latest average interest rate the Treasury is paying on TIPS? I want to see how inflation-adjusted debt costs have moved."}],"resultDescription":"Returns a JSON object containing the record date (month-end YYYY-MM-DD), a count of rates returned, and an array of rate objects — each with security_type (Marketable, Non-marketable, or Interest-bearing Debt), security name (e.g. Treasury Bills, Treasury Notes, TIPS, FRNs, savings securities), and avg_interest_rate_pct as a decimal percentage.","failureModes":["Service unavailable if upstream Fiscal Data API is down or rate-limited","Payment failure if USDC balance is insufficient for the $0.01 fee","Stale data if the Treasury has not yet published the latest month's figures","Empty or partial rates array if upstream data is incomplete for the current period"],"whenToPreferThis":"Use this endpoint when you need official, current US Treasury average interest rate data by security type in a single lightweight call. Prefer it over scraping Treasury websites or using generic financial data APIs when you specifically need the government's own reported cost-of-borrowing figures segmented by debt instrument (T-bills, Notes, Bonds, TIPS, FRNs, savings securities).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T18:38:06.389Z","isFirstParty":false,"canonicalSlug":"us-treasury-interest-costs-df1eca19"}