{"uid":"cap_nn3ZesCPrKxVKoWHjxwGf","slug":"saylor-innovations-data-desk-chainlink-price-feed-80b3dc3b","name":"Saylor Innovations Data Desk – Chainlink Price Feed","description":"Chainlink price feed read on-chain for any pair on 7 chains - price, round id, last update and age, heartbeat, deviation threshold and a stale or fresh verdict","url":"https://saylorinnovations.com/api/chainlink/price?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","required":["feed"],"properties":{"feed":{"type":"string","description":"Feed pair, e.g. ETH/USD, BTC/USD, LINK/USD"},"chain":{"type":"string","description":"ethereum (default), base, arbitrum, optimism, polygon, bsc, avalanche"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["feed","price","status"],"properties":{"feed":{"type":"string","description":"Human-readable feed pair such as ETH / USD"},"note":{"type":"string","description":"Caveat or context for reading the result"},"chain":{"type":"string","description":"Blockchain the data is for"},"price":{"type":"number","description":"Price"},"source":{"type":"string","description":"Data source the values come from"},"status":{"type":"string","description":"Current status"},"decimals":{"type":"number","description":"Token decimal places"},"round_id":{"type":"string","description":"Round id identifier"},"updated_at":{"type":"string","description":"Updated at (UTC unless a time zone is given)"},"age_seconds":{"type":"number","description":"Age, in seconds"},"asset_class":{"type":["string","null"],"description":"Asset class"},"proxy_address":{"type":"string","description":"Proxy address"},"heartbeat_seconds":{"type":["number","null"],"description":"Heartbeat, in seconds"},"deviation_threshold_percent":{"type":["number","null"],"description":"Deviation threshold, as a percentage"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_h4jt9Z6x-USVHv8n3Bw9T","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Reads Chainlink on-chain price feeds for any supported pair across 7 blockchains, returning price, round ID, update timestamp, age, heartbeat, deviation threshold, and a stale/fresh verdict","exampleAgentPrompt":"What's the current ETH/USD price on Ethereum according to Chainlink, and is the feed still fresh — show me the round ID, last update time, and deviation threshold too?","exampleUseCases":[{"title":"Pre-trade oracle freshness check","prompt":"Before I execute this DeFi trade, can you check the Chainlink BTC/USD feed on Arbitrum and tell me if it's stale or fresh, and what the current price and age are?"},{"title":"Multi-chain price comparison","prompt":"Fetch the ETH/USD Chainlink price on both Ethereum mainnet and Base so I can compare what the oracle is reporting on each chain right now."},{"title":"Monitoring oracle heartbeat health","prompt":"Check the Chainlink LINK/USD feed on Polygon — what's the heartbeat window, how old is the last update, and does it fall within the deviation threshold?"}],"resultDescription":"A JSON object containing the feed pair label, current price, chain name, round ID, updated_at timestamp, age in seconds, heartbeat in seconds, deviation threshold percentage, proxy contract address, token decimals, asset class, data source, and a stale-or-fresh status verdict.","failureModes":["Unsupported feed pair for the requested chain returns an error or empty result","Invalid chain name defaults to Ethereum or may return an error","Feed pair not yet supported on a specific chain yields a not-found response","Network or on-chain RPC latency may occasionally cause timeouts","Missing required 'feed' query parameter causes a validation error"],"whenToPreferThis":"Choose this endpoint when you need authoritative on-chain Chainlink oracle data including staleness metadata (heartbeat, deviation threshold, age, stale/fresh verdict) across multiple EVM chains. It is superior to simple price APIs when DeFi safety checks require verifying oracle freshness before executing trades, liquidations, or collateral valuations. Prefer it over off-chain price aggregators when you specifically need to reflect what a smart contract would see from its Chainlink feed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T19:18:27.703Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-data-desk-chainlink-price-feed-80b3dc3b"}