{"uid":"cap_ZuSMvyvT5FHJC1BGZwXp7","slug":"wallet-nonce-lookup-72b5f7c1","name":"Wallet Nonce Lookup","description":"Free APEX on X1, and free USDC plus APEX on Arc, three times a day. No gas, no sign-up. Plus a swap, a screener, APEX City and token checks.","url":"https://apexfaucet.xyz/api/x402/evm-nonce?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"chain":{"enum":["ethereum","base","arc","bnb"],"type":"string","description":"Chain to read: ethereum, base, arc or bnb. Default ethereum."},"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"Wallet address."}}}}},"output":{"type":"object"}}},"responseSchema":{"type":"json","schema":{"type":"object","properties":{"ok":{"type":"boolean"},"data":{"type":"object"},"paid":{"type":"number"}}},"example":{"ok":true,"data":{"ok":true,"block":25781215,"chain":"arc","nonce":1107,"address":"0x024b82335C29Fa5606a8ea5c1D24FC9eAD50700C","blockTime":"2026-10-13T16:38:43.000Z","nextNonce":1107,"pendingTransactions":0},"paid":0.001}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_zKvCV2DIHhCTNuygu1Bwb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","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 and pending transaction count for an EVM wallet address on Ethereum, Base, Arc, or BNB Chain.","exampleAgentPrompt":"What's the current nonce for wallet 0x024b82335C29Fa5606a8ea5c1D24FC9eAD50700C on the Arc chain?","exampleUseCases":[{"title":"Pre-flight nonce check before sending","prompt":"Before I broadcast my next transaction, what's the current nonce for 0xAbC1234567890abcdef1234567890abcdef123456 on Base so I don't get a nonce conflict?"},{"title":"Debugging stuck pending transactions","prompt":"My transactions seem stuck — can you check the nonce and pending transaction count for 0xDeF9876543210fedcba9876543210fedcba987654 on Ethereum to see if there's a backlog?"},{"title":"Monitoring wallet activity on BNB","prompt":"What's the latest nonce and block info for wallet 0x1a2B3c4D5e6F7a8B9c0D1e2F3a4B5c6D7e8F9a0B on BNB Chain right now?"}],"resultDescription":"Returns a JSON object with ok status, the wallet address, current nonce, next nonce, number of pending transactions, current block number, block timestamp, and the chain queried. Cost is $0.001 USDC per call paid via x402.","failureModes":["Invalid wallet address format (must match 0x + 40 hex chars) — returns error","Unsupported chain value — only ethereum, base, arc, bnb are accepted","Network timeout or chain RPC unavailability — service may return error or delayed response","Missing required address parameter — request rejected","Payment failure via x402 protocol — call not executed"],"whenToPreferThis":"Use this endpoint when you need real-time nonce data for an EVM wallet across Ethereum, Base, Arc, or BNB Chain without setting up your own RPC node. It is especially useful when you need to construct or sequence transactions correctly, debug stuck transactions, or monitor wallet activity programmatically at very low cost ($0.001 per call). Prefer it over generic blockchain explorers when you need structured JSON output with nonce and pending transaction count in a single lightweight call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T12:50:19.664Z","isFirstParty":false,"canonicalSlug":"wallet-nonce-lookup-72b5f7c1"}