{"uid":"cap_8C_YlBJoL-oY-fZoIVf9o","slug":"ethereum-block-header-61e3653e","name":"Ethereum Block Header","description":"Free verified Ethereum block-header sample. Purchase any supported block selector at GET /ethereum-block?block=25750000 for $0.00295.","url":"https://appearing-clinics-show-wrote.trycloudflare.com/ethereum-block-sample","method":"GET","headers":{},"bodySchema":{"type":"object","$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":[],"properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"unprobed","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"unknown","summary":"price unknown","primary":{"kind":"unknown","protocol":"x402","network":"base","amountUsd":null,"per":"call","confidence":"unknown"},"accepted":[{"kind":"unknown","protocol":"x402","network":"base","amountUsd":null,"per":"call","confidence":"unknown"}]},"paymentMethods":[{"uid":"pm_hgI2f9zpw62s2cWdUjw_s","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a normalized Ethereum mainnet block header for a specified block number or selector, including gas fields, timestamps, and chain metadata.","exampleAgentPrompt":"Can you fetch the Ethereum mainnet block header for block 25750000, including the timestamp, gas fields, and block hash?","exampleUseCases":[{"title":"Verify block timestamp for on-chain event","prompt":"I need the block header for Ethereum block 25750000 — specifically the timestamp and hash so I can verify when an on-chain event happened."},{"title":"Gas analysis for historical block","prompt":"Pull the block header for Ethereum mainnet block 20000000 and give me the gas limit and gas used so I can analyze network congestion at that point."},{"title":"Audit block metadata for compliance","prompt":"Fetch the full normalized block header for Ethereum block 18500000, including the miner address and difficulty, for a compliance audit trail."}],"resultDescription":"A normalized Ethereum block header object containing fields such as block number, block hash, parent hash, timestamp, miner/validator address, gas limit, gas used, base fee per gas, difficulty, and other chain metadata for the requested block.","failureModes":["Invalid or out-of-range block number returns an error or empty response","Block selector not recognized returns a 400 bad request","Network connectivity to Ethereum node fails resulting in a 5xx error","Payment not completed for paid tier results in 402 Payment Required","Rate limiting may occur under high request volume"],"whenToPreferThis":"Use this endpoint when you need structured, normalized Ethereum mainnet block header data for a specific block number or selector. Prefer this over raw RPC calls when you want a clean, pre-parsed response without managing your own Ethereum node. It is well-suited for agents needing block timestamps, gas metrics, or hash verification for a known block height.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:25:54.157Z","isFirstParty":false}