{"uid":"cap_tyY6VoyJ5TwrJoeNRDEHH","slug":"fx-pulse-stablecoin-fiat-fx-reference-rates-f37804d3","name":"FX Pulse – Stablecoin & Fiat FX Reference Rates","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/rates?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"base":{"type":"string","description":"Base currency (ISO-4217) or stablecoin ticker."},"quotes":{"type":"array","items":{"type":"string"},"description":"Up to 20 target currency/stablecoin codes."}}},"responseSchema":{"type":"json","example":{"base":"USDC","date":"2026-09-19","rates":{"EUR":0.92,"GBP":0.79,"JPY":147.3,"VND":25400}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.015","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":"$0.015/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_8mRo9qwepJCBMsTGMtFlS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.015","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time FX reference rates between fiat currencies and major stablecoins (USDC, EURC, USDT) for a given base/quote pair or batch of up to 20 targets.","exampleAgentPrompt":"What's the current FX Pulse exchange rate for USDC against EUR, GBP, JPY, and VND?","exampleUseCases":[{"title":"Stablecoin cross-border payment pricing","prompt":"I'm about to send a USDC payment to a supplier in Japan — what's the current USDC to JPY reference rate so I can quote them the right amount?"},{"title":"Multi-currency wallet dashboard","prompt":"Show me today's FX Pulse rates for USDC against EUR, GBP, SGD, and VND so I can update my wallet's display balances."},{"title":"Stablecoin invoice conversion","prompt":"I need to invoice a client in Euros but I'm billing in EURC — what's the current EURC to EUR rate so I can set the right amount on the invoice?"}],"resultDescription":"A JSON object containing the base currency code, the date of the rate snapshot, and a 'rates' map of each requested quote currency code to its numeric exchange rate (e.g. {\"base\":\"USDC\",\"date\":\"2026-09-19\",\"rates\":{\"EUR\":0.92,\"GBP\":0.79,\"JPY\":147.3}}).","failureModes":["Unsupported currency code returns an error or omits that pair from the response","Exceeding 20 quote currencies may result in a validation error","Payment failure via x402/USDC may block the request entirely","Network or upstream rate feed outage may return stale or unavailable rates","Malformed base/quote parameters return a 400-level error"],"whenToPreferThis":"Choose this endpoint when you need real-time FX reference rates specifically covering major stablecoins (USDC, EURC, USDT) alongside fiat currencies, and especially when operating in a pay-per-call crypto-native environment using x402 on Base. It is ideal for agents handling stablecoin payments, DeFi workflows, or multi-currency invoicing where stablecoin-to-fiat rates are a first-class requirement.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T18:32:30.411Z","isFirstParty":false,"canonicalSlug":"fx-pulse-stablecoin-fiat-fx-reference-rates-f37804d3"}