{"uid":"cap_Z2ApX_ZfQuX6WisVp8uMZ","slug":"ethereum-mainnet-eth-gettransactioncount-nonce-lookup-71e6d46d","name":"Ethereum Mainnet eth_getTransactionCount (Nonce Lookup)","description":"ARYSPHERE sells AI-written verdicts on Base token contracts (a grade, a one-liner, a roast and the contract's facts) and Base/Ethereum chain reads, paid per call in USDC on Base over x402 v2. No account and no API key.","url":"https://api.arysphere.com/v1/ventures/x402_eth_reads_v1/eth_mainnet_eth_gettransactioncount?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"0x + 40 hex"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"hex":"0x1751","chain":"ethereum","method":"eth_getTransactionCount","result":5969,"service":"x402_eth_reads_v1.eth_mainnet_eth_gettransactioncount"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dAhzsmdOaUoi5bdv_BeQ4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the number of transactions sent from an Ethereum mainnet address (its nonce / transaction count) via eth_getTransactionCount.","exampleAgentPrompt":"What is the current transaction count (nonce) for Ethereum address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on mainnet?","exampleUseCases":[{"title":"Pre-flight nonce check before sending ETH","prompt":"Before I broadcast my next Ethereum transaction, can you fetch the current nonce for my wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 so I can set the right transaction count?"},{"title":"Verify wallet activity level","prompt":"Has this Ethereum address 0xAbCd1234567890abcd1234567890AbCd12345678 sent any transactions before? Can you get its total transaction count on mainnet?"},{"title":"Monitor nonce drift in multi-signer setup","prompt":"Check the on-chain transaction count for Ethereum address 0x1234567890abcdef1234567890abcdef12345678 — I need to confirm how many transactions have been confirmed so far to make sure our nonce tracking is correct."}],"resultDescription":"Returns a JSON object containing: 'ok' (boolean success flag), 'result' (integer transaction count / nonce), 'hex' (nonce as hex string or null), 'chain' (chain identifier, e.g. 'eth_mainnet'), 'method' (echoed method name 'eth_getTransactionCount'), 'service' (service identifier), and 'error' (string, only present when ok is false).","failureModes":["Invalid or malformed address (not matching ^0x[0-9a-fA-F]{40}$) returns ok:false with an error message","Network or RPC node unavailability causes error response","Missing address query parameter may return error or default behavior","Payment failure (402) if USDC payment not included or insufficient"],"whenToPreferThis":"Choose this endpoint when you need the confirmed on-chain nonce (transaction count) of an Ethereum mainnet address — especially before constructing and signing a new transaction, auditing wallet activity, or verifying nonce consistency. Prefer this over general RPC gateways when you need a pay-per-call, x402-compatible interface with no API key setup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T12:40:49.127Z","isFirstParty":false,"canonicalSlug":"ethereum-mainnet-eth-gettransactioncount-nonce-lookup-71e6d46d"}