{"uid":"cap_zNtTbYRkzRbDd0d-_J1w8","slug":"ciel-m2m-api-fx-historical-exchange-rates-080ceac5","name":"CIEL M2M API – FX Historical Exchange Rates","description":"50+ micro-services for AI agents: data parsing, crypto analytics, security scanning, code tools, and more. Pay per call via x402 (USDC on Base) or RapidAPI subscription.","url":"https://169.58.38.67.sslip.io/api/fx-historical","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"result":"data"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/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_HZn2EZeC5Oh2pP4Vq659a","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":"Retrieves historical foreign exchange rate data for a given currency pair and date range","exampleAgentPrompt":"Can you pull the historical exchange rates for USD to EUR from January 1 to March 31, 2024? I need to see how the rate moved over that quarter.","exampleUseCases":[{"title":"Quarterly FX reporting for finance team","prompt":"Pull the daily USD to GBP exchange rates for all of Q1 2024 — I need to reconcile our UK revenue figures in dollars for the quarterly report."},{"title":"Backtesting a currency trading strategy","prompt":"Get me the historical EUR to JPY rates for every day in 2023 so I can backtest my forex trading signals against actual market data."},{"title":"Accounting reconciliation for past invoices","prompt":"What was the CAD to USD exchange rate on October 15, 2023? I need to convert a Canadian invoice to US dollars for our books."}],"resultDescription":"Returns a JSON object containing historical FX rate data, typically including date-indexed exchange rate values for the requested currency pair over the specified time period.","failureModes":["Invalid or unsupported currency pair returns an error or empty result","Date range out of bounds or future dates may return no data","Malformed query parameters result in a 400-level error","Payment failure via x402/USDC results in 402 Payment Required before data is returned","Rate limiting or quota exhaustion may return a 429 error"],"whenToPreferThis":"Choose this endpoint when you need historical (past) FX rate data for a specific currency pair, particularly in a pay-per-call context without a subscription commitment. Well-suited for agents performing financial reconciliation, backtesting, or one-off date lookups where a full forex data subscription would be overkill.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-18T06:53:46.556Z","isFirstParty":false}