{"uid":"cap_SWmUpkYAn0CDt0qcKTaVy","slug":"evm-account-nonce-lookup-7cbaf906","name":"EVM Account Nonce Lookup","description":"Read the confirmed or pending transaction count for an EVM address at a selected block tag or height.","url":"https://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/evm_nonce","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":["address"],"properties":{"block":{"type":"string","description":"Block tag or height; defaults to latest. Use pending for the next local transaction nonce."},"chain":{"type":"string","description":"base, ethereum, or arbitrum; defaults to base."},"address":{"type":"string","description":"EVM account address."}},"additionalProperties":true}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["success","network","address","block","nonce","nonce_hex"],"properties":{"block":{"type":"string"},"nonce":{"type":"string"},"address":{"type":"string"},"network":{"type":"string"},"success":{"type":"boolean"},"nonce_hex":{"type":"string"}},"additionalProperties":true}}}}},"responseSchema":{"type":"json","example":{"block":"pending","nonce":"0","address":"0x0000000000000000000000000000000000000000","network":"base","success":true,"nonce_hex":"0x0"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0015","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":"$0.0015/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0015","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0015","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_2BO2MPRl7DFDWoYWRqZqc","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0015","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current transaction nonce for an EVM account address on Base, Ethereum, or Arbitrum at a specified block height.","exampleAgentPrompt":"What's the current pending nonce for the address 0xAbCd1234...5678 on Base? I need it before I submit my next transaction.","exampleUseCases":[{"title":"Pre-transaction nonce check","prompt":"Before I send a transaction from 0x1234567890abcdef1234567890abcdef12345678 on Base, what's the pending nonce I should use?"},{"title":"Arbitrum wallet activity audit","prompt":"How many transactions has the address 0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef sent so far on Arbitrum? Give me the nonce at the latest block."},{"title":"Historical nonce at block height","prompt":"What was the nonce of 0xabc123def456abc123def456abc123def456abc1 on Ethereum at block 19000000?"}],"resultDescription":"Returns a JSON object containing the account address, the resolved block tag (e.g. 'pending' or a block number), the network name, the nonce as a decimal string, and the nonce as a hex string, plus a success boolean.","failureModes":["Invalid or malformed EVM address returns an error response","Unsupported chain value (not base, ethereum, or arbitrum) returns an error","Invalid block tag or out-of-range block height returns an error","Network connectivity issues to the underlying RPC node may cause timeouts","Payment failure (insufficient USDC balance) blocks the request with HTTP 402"],"whenToPreferThis":"Use this endpoint when an agent needs the current or pending transaction nonce for an EVM wallet on Base, Ethereum, or Arbitrum and you want a pay-per-use, no-subscription approach via USDC micropayment. Prefer this over running your own RPC node when you need on-demand nonce lookups across multiple chains without managing infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:50:05.491Z","isFirstParty":false}