{"uid":"cap_2l97FRR6bRpEdfoPJmMBX","slug":"synapse-eth-price-api-825ebe02","name":"Synapse ETH Price API","description":"Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.","url":"https://anibalb.duckdns.org/x402/eth-price?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"coin":"ethereum","price_usd":3000}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_bMnShjscE4vYmk4-6bt2X","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current USD price of Ethereum (ETH) via a pay-per-call x402 endpoint requiring no API key","exampleAgentPrompt":"What is the current price of Ethereum in USD? Use the Synapse pay-per-call API — no API key needed, just pay $0.001 USDC per call on Base.","exampleUseCases":[{"title":"Crypto portfolio valuation refresh","prompt":"Check the current ETH price in USD so I can update the value of my Ethereum holdings right now."},{"title":"Trading bot price trigger check","prompt":"Fetch the live Ethereum price — I want to know if ETH has crossed $3500 so my bot can decide whether to execute a trade."},{"title":"DeFi dashboard price display","prompt":"Pull the current ETH/USD price for my DeFi dashboard — I need a fresh number to show users what their collateral is worth."}],"resultDescription":"A JSON object containing the coin identifier ('ethereum') and its current price in USD as a numeric value, e.g. {\"coin\": \"ethereum\", \"price_usd\": 3000}.","failureModes":["Payment not included or insufficient USDC — returns HTTP 402 Payment Required","Network or upstream data source unavailable — may return 5xx error","Stale price data if upstream oracle is lagging","Invalid or malformed x402 payment header causes rejection"],"whenToPreferThis":"Choose this endpoint when you need a quick, keyless, pay-per-call ETH price lookup with no account setup. It is ideal for agents operating on Base that already handle x402 micropayments, and for use cases where per-call billing at $0.001 USDC is preferred over a subscription API key model.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:41:59.747Z","isFirstParty":false,"canonicalSlug":"synapse-eth-price-api-825ebe02"}