{"uid":"cap_3P7EHwjvnCNk20keRc07k","slug":"mint-intel-base-chain-eth-usd-price-feed-1e727733","name":"Mint Intel: Base Chain ETH/USD Price Feed","description":"ETH/USD read straight from Base state, no CEX or API key: the Chainlink ETH/USD feed (latestRoundData) plus the Uniswap v3 WETH/USDC 0.05% pool spot price in one RPC batch. Median of fresh sources, per-source price, feed age and round, spread in bps.","url":"https://mintintel.35-171-220-195.sslip.io/v1/base/eth-usd?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["pair","price","sources"],"properties":{"pair":{"type":"string"},"price":{"type":"number"},"sources":{"type":"array"}}}}}}},"responseSchema":null,"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_zWvk9gsWDNJXqIXa6bzd-","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 ETH/USD price on Base chain by batching Chainlink latestRoundData and Uniswap v3 WETH/USDC spot price, then reporting the median, per-source prices, feed age, round info, and spread in basis points.","exampleAgentPrompt":"What's the current ETH/USD price straight from Base chain — pull the Chainlink and Uniswap on-chain sources and show me the median, each source's price, and the spread between them.","exampleUseCases":[{"title":"DeFi arbitrage spread monitoring","prompt":"Check the current ETH/USD spread between Chainlink and Uniswap v3 on Base right now — I want to see the basis points spread and both individual prices to spot any arbitrage opportunity."},{"title":"On-chain price freshness audit","prompt":"Pull the latest Chainlink ETH/USD round data on Base for me — I need to know how old the feed is, what round we're on, and whether the price is still fresh before I trigger a transaction."},{"title":"Trustless ETH price for agent workflow","prompt":"Without using any centralized exchange or API key, get me the current ETH/USD price from Base chain directly — give me the median of the on-chain sources so my agent can use it as a reliable reference."}],"resultDescription":"A JSON object containing the trading pair label (ETH/USD), the median price computed across sources, and an array of per-source entries each with the source name, its reported price, feed age in seconds, and round ID; also includes the spread between sources in basis points.","failureModes":["RPC node unavailable — Base chain RPC call fails, returning a 5xx error","Stale feed — Chainlink round data is older than expected, flagged in feed age field","Price deviation — extreme spread between Chainlink and Uniswap may indicate pool manipulation or low liquidity","Payment failure — x402 micropayment of $0.001 USDC not completed, returns 402","Network timeout — batch RPC call exceeds timeout threshold"],"whenToPreferThis":"Choose this endpoint when you need a trustless, decentralized ETH/USD price from Base chain without relying on a centralized exchange or a third-party API key. It is ideal when you need both Chainlink oracle data and Uniswap v3 spot price in one call, or when feed freshness and source-level transparency matter. Prefer it over generic price APIs when operating within a DeFi workflow on Base that requires on-chain price provenance.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:41:32.253Z","isFirstParty":false,"canonicalSlug":"mint-intel-base-chain-eth-usd-price-feed-1e727733"}