{"uid":"cap_rKuFJHz02vvkUvCIlvq50","slug":"fx-pulse-stablecoin-fiat-fx-reference-rate-single-pair-3a4b08ed","name":"FX Pulse – Stablecoin & Fiat FX Reference Rate (Single Pair)","description":"Single-pair rate, amount conversion, and batch FX rates for fiat currencies and major stablecoins (USDC, EURC, USDT...). Pay-per-call in USDC via x402 on Base.","url":"https://fx-pulse-chi.vercel.app/api/rate?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"to":{"type":"string","description":"Target currency (ISO-4217) or stablecoin ticker."},"from":{"type":"string","description":"Source currency (ISO-4217) or stablecoin ticker (USDC, USDT, EURC...)."}}},"responseSchema":{"type":"json","example":{"to":"EUR","date":"2026-09-19","from":"USDC","rate":0.92}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_pyMBCj77wMvfSLk6rMa1n","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current exchange rate between a source fiat currency or stablecoin and a target fiat currency or stablecoin.","exampleAgentPrompt":"What's the current exchange rate from USDC to EUR? I need the FX Pulse reference rate so I can price an invoice.","exampleUseCases":[{"title":"Invoice pricing in local currency","prompt":"What's the current USDC to EUR exchange rate right now? I need to issue an invoice to a European client and want to quote them the right euro amount."},{"title":"Stablecoin portfolio valuation","prompt":"Can you look up the current rates for USDT to GBP and EURC to JPY so I can calculate the local-currency value of my stablecoin holdings?"},{"title":"Cross-border payment sanity check","prompt":"Before I send a payment, can you check what the current USDC to BRL rate is so I know how many reais my counterparty will effectively receive?"}],"resultDescription":"Returns a JSON object containing the source currency ('from'), target currency ('to'), the exchange rate as a decimal number ('rate'), and the date of the rate ('date'). Example: {\"from\":\"USDC\",\"to\":\"EUR\",\"rate\":0.92,\"date\":\"2026-09-19\"}.","failureModes":["Unsupported currency ticker — returns an error if 'from' or 'to' is not a recognized ISO-4217 code or supported stablecoin ticker","Missing required parameters — omitting 'from' or 'to' will likely return a 400-level error","Payment failure — if the x402 USDC micropayment on Base is not processed correctly, the request will be rejected","Rate unavailability — if the underlying FX data source is temporarily unavailable, the endpoint may return a 5xx error"],"whenToPreferThis":"Choose this endpoint when you need a real-time or near-real-time reference exchange rate between fiat currencies and/or major stablecoins (USDC, EURC, USDT) and want a pay-per-call pricing model with no subscription commitment. It is particularly well-suited for AI agents that need to price stablecoin transactions, invoice amounts, or cross-border payments on demand.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:31:59.381Z","isFirstParty":false,"canonicalSlug":"fx-pulse-stablecoin-fiat-fx-reference-rate-single-pair-3a4b08ed"}