{"uid":"cap_8Lz8wF0YM5q-_GtGkZkde","slug":"dopaminedesk-evm-block-lookup-4ccbd14e","name":"DopamineDesk EVM Block Lookup","description":"Retrieve a live EVM block header and a bounded list of real transaction hashes by height, tag, or block hash.","url":"https://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/evm_block","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":{"block":{"type":"string","description":"Block tag, decimal height, or canonical hex quantity. Defaults to latest."},"chain":{"type":"string","description":"base, ethereum, or arbitrum; defaults to base."},"block_hash":{"type":"string","description":"Optional 32-byte block hash. Takes precedence over block."},"transaction_limit":{"type":"integer","description":"Maximum transaction hashes returned, from 0 to 500; defaults to 250."}},"additionalProperties":true}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["success","network","block"],"properties":{"block":{"type":"object","required":["number","hash","transaction_count","transactions_truncated"],"properties":{"hash":{"type":"string"},"number":{"type":"string"},"transaction_count":{"type":"integer"},"transactions_truncated":{"type":"boolean"}},"additionalProperties":true},"network":{"type":"string"},"success":{"type":"boolean"}},"additionalProperties":true}}}}},"responseSchema":{"type":"json","example":{"block":{"hash":"0x...","number":"33752215","transaction_count":184,"transactions_truncated":false},"network":"base","success":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MXdnaW7Vz1dhxzgB2tuCe","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches block metadata (hash, number, transaction count, and transaction hashes) for a specified block on Base, Ethereum, or Arbitrum.","exampleAgentPrompt":"What are the details of the latest block on Base — give me the block number, hash, and how many transactions it contains?","exampleUseCases":[{"title":"On-chain block confirmation check","prompt":"I need to verify that block 33752215 was mined on Base — can you pull its hash and transaction count?"},{"title":"Real-time Ethereum block monitoring","prompt":"What is the current latest block on Ethereum? I need the block number, hash, and total transaction count."},{"title":"Arbitrum block transaction audit","prompt":"Fetch the block at height 150000000 on Arbitrum and return up to 100 transaction hashes so I can review what happened in that block."}],"resultDescription":"Returns a JSON object containing success status, network name, and a block object with the block number (as a string), block hash (hex), total transaction count, a list of transaction hashes (up to the specified limit), and a flag indicating if the transaction list was truncated.","failureModes":["Invalid or non-existent block number returns an error or empty result","Unsupported chain name returns a validation error","Block hash not found on the specified chain returns failure","Transaction limit out of range (>500) causes a parameter validation error","Payment failure via x402 results in 402 response before data is returned"],"whenToPreferThis":"Choose this endpoint when you need lightweight, pay-per-call EVM block metadata across Base, Ethereum, or Arbitrum without managing your own RPC node. It is ideal for agents performing on-chain verification, block confirmation checks, or transaction audits at low cost ($0.002 USDC per call) with no infrastructure setup required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:59:11.008Z","isFirstParty":false}