{"uid":"cap_FlrOuDCWYhEj0pg-kkUYS","slug":"us-treasury-average-interest-rates-54faa4ea","name":"US Treasury Average Interest Rates","description":"Average interest rate the US Treasury pays on its outstanding debt, latest month, by security: Treasury Bills (T-bills), Notes, Bonds, TIPS, FRNs, savings securities and total interest-bearing debt. Official Fiscal Data figures for tracking the cost of US government borrowing and national debt interest.","url":"https://avg-interest-rates.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_4kUaUcQ9VQ2PRRSVOqy9B","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 month's 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 average interest rate the US Treasury is currently paying on its outstanding debt — break it down by security type like T-bills, Notes, Bonds, and TIPS?","exampleUseCases":[{"title":"Tracking cost of US government borrowing","prompt":"What's the latest average interest rate the US government is paying on its total interest-bearing debt, and how does it break down across T-bills, Notes, and Bonds?"},{"title":"Monitoring TIPS and FRN rates for inflation analysis","prompt":"Can you pull the most recent average interest rates on Treasury Inflation-Protected Securities and Floating Rate Notes from official fiscal data?"},{"title":"Building a national debt interest cost dashboard","prompt":"I need the current average interest rates for all US Treasury security types — T-bills, Notes, Bonds, TIPS, FRNs, and savings securities — so I can calculate the blended cost of the national debt."}],"resultDescription":"Returns a JSON object with the record date (month-end YYYY-MM-DD), a count of securities returned, and an array of rate objects each containing the security class name (e.g. Treasury Bills, Treasury Notes), its category (Marketable, Non-marketable, or Interest-bearing Debt), and the average interest rate as a percentage. Data sourced from official US Treasury Fiscal Data.","failureModes":["Data may lag by one month if Treasury Fiscal Data hasn't published the latest figures yet","No input parameters available so no user-input validation errors expected","Upstream Fiscal Data source outage could cause stale or missing data","Payment failure (402) if USDC payment is not submitted correctly"],"whenToPreferThis":"Use this endpoint when you need the official, government-sourced average interest rates the US Treasury pays on its outstanding debt by security type for the most recent month. Prefer this over scraped or third-party rate aggregators when accuracy and official sourcing matter, such as for fiscal analysis, policy research, or financial reporting dashboards.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:40:05.305Z","isFirstParty":false,"canonicalSlug":"us-treasury-average-interest-rates-54faa4ea"}