{"uid":"cap_x4WiXX3tUjgi9I8KzItzA","slug":"chainlink-on-chain-price-feed-8905ef89","name":"Chainlink On-Chain Price Feed","description":"Onchain ETH, BTC or LINK USD price straight from Chainlink mainnet oracles with round id, update time and the feed address for auditability. token price, eth price usd, btc price oracle, chainlink price feed, onchain price data Accepts payment on Base or Solana — either network works.","url":"https://api.x402node.dev/chain/chainlink-price","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":{"pair":{"type":"string","description":"ETH-USD (default), BTC-USD or LINK-USD"}}}},"additionalProperties":false}}},"responseSchema":null,"example":{"request":{"token":"ETH"},"response":{"pair":"ETH-USD","_hint":"x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)","price":1728.87077051,"source":"chainlink-ethereum-mainnet","roundId":"129127208515966891852","updatedAt":"2026-06-18T06:03:59.000Z","feedAddress":"0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419","feedDescription":"ETH / USD"}},"exampleRequest":{"token":"ETH"},"tags":["x402"],"displayCostAmount":"0.004","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_nOpqiXMrqtyolFgjSAFTI","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","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 ETH, BTC, or LINK sourced directly from Chainlink mainnet oracles, including round ID, last update timestamp, and feed contract address.","exampleAgentPrompt":"What's the current ETH price in USD straight from the Chainlink mainnet oracle — include the round ID, last update time, and the feed contract address so I can verify it on-chain?","exampleUseCases":null,"resultDescription":"Returns the current USD price for the requested asset (ETH, BTC, or LINK), the Chainlink oracle round ID, the timestamp of the last price update, and the Chainlink feed contract address for on-chain auditability.","failureModes":["Unsupported token symbol returns an error or empty response","Chainlink oracle node downtime may result in stale or unavailable price data","Network/RPC issues with mainnet connectivity may delay or fail the response","Invalid or missing token parameter results in a 400-level error"],"whenToPreferThis":"Use this endpoint when you need a tamper-resistant, on-chain verifiable price for ETH, BTC, or LINK in USD — especially when auditability, round ID, and feed provenance matter (e.g. for DeFi logic, smart contract inputs, or financial reporting). Prefer this over centralized exchange tickers when you need a canonical on-chain source rather than spot market data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:04:20.285Z","isFirstParty":false}