{"uid":"cap_aaNBSCGNqv9DDaLjcWrBQ","slug":"stablefinance-macro-interest-rates-9c732d23","name":"StableFinance Macro Interest Rates","description":"Historical policy rates for a central bank.","url":"https://stablefinance.dev/api/macro/interest-rates","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["bank"],"properties":{"bank":{"type":"string","minLength":1},"end_date":{"type":"string","pattern":"^\\d{4}-\\d{2}-\\d{2}$"},"start_date":{"type":"string","pattern":"^\\d{4}-\\d{2}-\\d{2}$"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["interest_rates"],"properties":{"interest_rates":{"type":"array","items":{}}},"additionalProperties":false}}}}},"responseSchema":{"type":"json","example":{"interest_rates":[{"bank":"FED","date":"2026-04-01","name":"Federal Reserve","rate":3.625}]}},"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{"bank":"FED","end_date":"2024-12-31","start_date":"2022-01-01"}},"output":{"type":"application/json","example":{"interest_rates":[]}}},"response":{"interest_rates":[{"bank":"FED","date":"2023-04-01","name":"Federal Reserve","rate":4.875},{"bank":"FED","date":"2023-05-01","name":"Federal Reserve","rate":5.125},{"bank":"FED","date":"2023-06-01","name":"Federal Reserve","rate":5.125},{"bank":"FED","date":"2023-07-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2023-08-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2023-09-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2023-10-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2023-11-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2023-12-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-01-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-02-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-03-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-04-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-05-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-06-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-07-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-08-01","name":"Federal Reserve","rate":5.375},{"bank":"FED","date":"2024-09-01","name":"Federal Reserve","rate":4.875},{"bank":"FED","date":"2024-10-01","name":"Federal Reserve","rate":4.875},{"bank":"FED","date":"2024-11-01","name":"Federal Reserve","rate":4.625},{"bank":"FED","date":"2024-12-01","name":"Federal Reserve","rate":4.375}]}},"exampleRequest":{"bank":"FED","end_date":"2024-12-31","start_date":"2022-01-01"},"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__qNDLS3QfdFMAWDWEP8L9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns historical and current central bank interest rates for a specified bank and optional date range via pay-per-request x402 micropayment access.","exampleAgentPrompt":"What has the Federal Reserve's interest rate been from January 2022 to December 2024? Pull the full history from StableFinance's macro interest rates endpoint using bank code FED.","exampleUseCases":null,"resultDescription":"Returns a JSON array of interest rate records, each containing the bank identifier (e.g. 'FED'), the date, the bank's full name (e.g. 'Federal Reserve'), and the rate as a decimal percentage (e.g. 3.625).","failureModes":["Missing required 'bank' query parameter returns a 400 or 422 validation error","Invalid date format (not YYYY-MM-DD) causes a schema validation failure","Unknown bank identifier may return an empty array or 404","Insufficient USDC balance or failed x402 micropayment results in a 402 Payment Required response","Date range with no available data returns an empty interest_rates array"],"whenToPreferThis":"Use this endpoint when you need reliable, pay-per-use access to central bank benchmark interest rate data — especially FED or similar macro-level rates — without a subscription. 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