{"uid":"cap_uWAIDjRiN_uEmjo_alEH5","slug":"x402-alert-exchange-rates-api-e892fb2d","name":"x402 Alert Exchange Rates API","description":"14 paid financial API endpoints. Pay with USDC on Base using x402 protocol.","url":"https://x402-alert.vercel.app/api/exchange-rates","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"object","example":{"result":{"data":"example response"}},"properties":{"result":{"type":"object","description":"API response data"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fwbSXiwKcQ8ozp0hS4FZZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches current foreign exchange rates for currency pairs, paid via USDC on Base using the x402 protocol","exampleAgentPrompt":"What is the current exchange rate from USD to EUR? I need real-time FX data and I'm happy to pay per call via USDC.","exampleUseCases":[{"title":"Live FX rate for invoice conversion","prompt":"I'm billing a client in Japan — what's the current USD to JPY exchange rate so I can convert my invoice amount accurately?"},{"title":"Multi-currency dashboard data","prompt":"Can you fetch me the current exchange rates for USD to EUR, GBP, and JPY so I can update my portfolio dashboard?"},{"title":"Travel budget currency check","prompt":"I'm heading to the UK next week — what's the current exchange rate from USD to GBP right now?"}],"resultDescription":"Returns an object containing exchange rate data for the requested currency pair(s), including the current rate and associated metadata such as timestamp or source, wrapped in a result object.","failureModes":["Payment failure if USDC balance is insufficient or x402 protocol handshake fails","Invalid or unsupported currency pair returns an error","Stale or unavailable rate data if upstream provider is down","Malformed request body results in a 400 error","Network timeout if the underlying FX data source is slow"],"whenToPreferThis":"Choose this endpoint when you need real-time exchange rate data and are operating in an x402-compatible payment environment using USDC on Base. Ideal for agents that are already integrated with crypto micropayments and need per-call FX lookups without a subscription. Best when you want pay-as-you-go access ($0.05 per call) rather than a traditional API key subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:39:40.339Z","isFirstParty":false}