{"uid":"cap_j3Vmyl1Z5W-Quyp_hyvlL","slug":"ecb-fx-currency-converter-macropulse-28df08ec","name":"ECB FX Currency Converter (MacroPulse)","description":"Convert an amount between currencies at the official European Central Bank reference rate. Answers \"what is the USD to EUR exchange rate\", \"convert 250 GBP to JPY\", \"what was the EUR/USD FX rate on 2024-03-15\". Multi-currency in one call (to=EUR,GBP,JPY), 30+ currencies, historical daily fixings back to 1999. Deterministic and cacheable: real ECB data, not a model estimate — identical inputs always return the identical rate. Keyless, sub-second.","url":"https://macropulse.theaslangroupllc.com/api/fx/convert?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["to","from"],"properties":{"to":{"type":"string","description":"Target currency, or a comma-separated list, e.g. EUR or EUR,GBP,JPY"},"date":{"type":"string","description":"YYYY-MM-DD. Returns that day's ECB fixing (or the last fixing on or before it, whose date is reported back). Omit for the latest."},"from":{"type":"string","description":"Source currency, ISO 4217 alpha-3, e.g. USD"},"amount":{"type":"number","description":"Amount to convert. Default 1 (i.e. the raw rate)."}}},"responseSchema":{"type":"json","example":{"to":{"EUR":{"rate":0.87535,"amount":218.8375},"GBP":{"rate":0.74694,"amount":186.735}},"date":"2026-07-13","from":"USD","source":"European Central Bank reference rates (via Frankfurter)","amount_in":250,"deterministic":true,"requested_date":null,"cache_hint_seconds":3600,"is_last_available_fixing":false}},"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":{"p10Cents":"0.5000","medianCents":"0.5000","p90Cents":"0.5000","minCents":"0.5000","maxCents":"0.5000","p95Cents":"0.5000","sampleCount":1,"varies":false,"failureChargeRate":1},"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_xwdUfsxjINImq5ahBA2q_","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":"Converts an amount between currencies using official European Central Bank reference rates, with support for historical rates back to 1999.","exampleAgentPrompt":"Using the official ECB reference rate, convert 250 GBP to JPY and also show me EUR — I need the rate that was in effect on 2024-03-15, not today's rate.","exampleUseCases":null,"resultDescription":"Returns the converted amount(s), the applicable exchange rate(s), the base and target currencies, and the effective date of the ECB fixing used. Multiple target currencies can be returned in a single response.","failureModes":["Unsupported currency code returns an error (only 30+ ECB-tracked currencies available — exotic or minor currencies not included)","Historical date before 1999 returns no data","Future date requested returns an error or falls back to latest available","Weekend or holiday date may return the most recent prior business day's fixing","Malformed currency code returns a 400-level error","Rate-limiting or payment failure returns 402 or 429 errors"],"whenToPreferThis":"Prefer this endpoint when you need deterministic, authoritative ECB official reference rates rather than mid-market estimates or broker rates. Ideal for compliance, accounting, or financial reporting use cases where the official ECB fixing is required. Also preferred when you need historical daily rates back to 1999, multi-currency conversion in one call, or a keyless sub-second lookup without model-generated estimates.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:35:56.357Z","isFirstParty":false,"canonicalSlug":"ecb-fx-currency-converter-macropulse-28df08ec"}