{"uid":"cap_wvgsdvdDD-h86o0vPg1uv","slug":"fx-rates-by-hergertsynthora-ecb-frankfurter-3c4ef441","name":"FX Rates by Hergertsynthora (ECB/Frankfurter)","description":"Foreign-exchange reference rates for 30+ currencies (ECB via Frankfurter). Deterministic, keyless.","url":"https://fx-rates.hergertsynthora.com/service","method":"POST","headers":{},"bodySchema":{"type":"object","required":["base","symbols"],"properties":{"base":{"type":"string","description":"base"},"symbols":{"type":"string","description":"symbols"}}},"responseSchema":null,"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_1JaTCzFPZrkuWlBjhrIFD","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 foreign-exchange reference rates for 30+ currencies sourced from the European Central Bank via Frankfurter, given a base currency and optional target symbols.","exampleAgentPrompt":"What are the current ECB reference exchange rates for USD, GBP, JPY, and CHF using EUR as the base currency?","exampleUseCases":null,"resultDescription":"A set of exchange rate values for the requested currency pairs, derived from ECB reference data. Each rate represents how much of each target currency (symbols) equals one unit of the base currency.","failureModes":["Upstream ECB/Frankfurter failure — no charge applied, but rates unavailable","Invalid or unsupported currency code in base or symbols — likely returns an error or empty rates","Missing or malformed X-WALLET header — may result in payment/access failure after the 3 free calls","Network timeout or service unavailability"],"whenToPreferThis":"Choose this endpoint when you need deterministic, official ECB foreign-exchange reference rates for 30+ currencies without an API key. Ideal for agents that need FX data for conversion, display, or enrichment and want a pay-per-call model with no signup. Prefer over other FX APIs when ECB provenance is important or when keyless access is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:33:09.014Z","isFirstParty":false}