{"uid":"cap_KEUhTv56qrxEVyPPwUG0r","slug":"base-blockchain-block-lookup-d88129d3","name":"Base Blockchain Block Lookup","description":"Real-time airfare intelligence for AI travel-booking agents: flight price-drop prediction, fare-fraud and deal-legitimacy verification, and verified booking links for any route and date. Pay-per-call in USDC on Base. No API key.","url":"https://tripguard-fare-intel.onrender.com/chain/block?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"number":{"type":"integer","minimum":0,"description":"Block height. Omit for the chain head."}}},"responseSchema":{"type":"json","example":{"hash":"0xabababababababababababababababababababababababababababababababab","number":34567890,"gasUsed":"12345678","iso8601":"2026-08-30T12:00:00.000Z","timestamp":1787750000,"transactions":142}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.12","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":"$0.12/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.12","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.12","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_g8L_MOpq3GZpBR-iwdS-W","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.12","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves block metadata (hash, number, gas used, timestamp, transaction count) for a specified block height on the Base blockchain, or the chain head if no block number is provided.","exampleAgentPrompt":"Can you look up the block data for block 34567890 on the Base blockchain — I need the hash, timestamp, gas used, and how many transactions were in it?","exampleUseCases":[{"title":"Monitor latest Base chain head","prompt":"What's the current head block on Base right now — give me the block number, hash, and timestamp?"},{"title":"Audit gas usage for specific block","prompt":"Can you pull up block 34500000 on Base and tell me how much gas was used and how many transactions it contained?"},{"title":"Verify block timestamp for audit trail","prompt":"I need to confirm the exact timestamp and hash for block 34123456 on the Base network for a compliance report."}],"resultDescription":"Returns a JSON object containing the block hash, block number, gas used, ISO 8601 formatted timestamp, Unix timestamp, and transaction count for the requested block (or the chain head if no block number was specified).","failureModes":["Block number does not yet exist on chain — returns an error or empty result","Invalid block number format (non-integer or negative) — schema validation error","Network or RPC node unavailability — service timeout or 5xx error","Payment failure in USDC — 402 Payment Required response"],"whenToPreferThis":"Use this endpoint when you need lightweight, pay-per-call block metadata from the Base blockchain without managing an RPC node or API key. Prefer it for agent workflows that need on-demand block lookups (e.g. verifying timestamps, auditing gas, checking transaction volume) on Base specifically, rather than Ethereum mainnet or other chains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:36:57.294Z","isFirstParty":false,"canonicalSlug":"base-blockchain-block-lookup-d88129d3"}