{"uid":"cap_mih-Cu86I7UzTPPzDjiXe","slug":"proofsignal-wallet-snapshot-82a9fea3","name":"ProofSignal Wallet Snapshot","description":"Base wallet readiness snapshot: checksum address, EOA or contract classification, ETH and native USDC balances, transaction nonce, and current block in one response.","url":"https://enough-kate-provide-bennett.trycloudflare.com/wallet-snapshot","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":{"address":{"type":"string","description":"0x-prefixed EVM wallet or contract address on Base mainnet"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"address":{"type":"string"},"chainId":{"type":"number"},"network":{"type":"string"},"checkedAt":{"type":"string"},"ethBalance":{"type":"string"},"accountType":{"type":"string"},"blockNumber":{"type":"string"},"usdcBalance":{"type":"string"},"transactionCount":{"type":"number"}}}}}}},"responseSchema":null,"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_QMSqDSXmwGjhCYfFT478a","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 a comprehensive Base mainnet wallet readiness snapshot including checksum address, EOA/contract classification, ETH balance, native USDC balance, transaction nonce, and current block number in a single call.","exampleAgentPrompt":"Can you pull a full wallet snapshot for 0x742d35Cc6634C0532925a3b8D4C9B7F1a6E1Dc9 on Base — I need to know whether it's an EOA or contract, its ETH and USDC balances, its nonce, and what block we're on right now?","exampleUseCases":[{"title":"Pre-transaction wallet readiness check","prompt":"Before I submit this transaction, check 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base — I need its ETH and USDC balances, its nonce, and whether it's a regular wallet or a smart contract."},{"title":"DeFi agent funding verification","prompt":"I'm about to trigger a DeFi action for my user — can you snapshot wallet 0xAbC123...def456 on Base mainnet so I can confirm they have enough ETH and USDC and their nonce is current?"},{"title":"Wallet classification for compliance check","prompt":"Is 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD a regular externally owned account or a contract on Base, and what are its current ETH and USDC balances?"}],"resultDescription":"A JSON object containing the checksummed wallet address, chain ID, network name, account type (EOA or contract), ETH balance as a string, native USDC balance as a string, transaction count/nonce as a number, current block number, and a checkedAt timestamp — all reflecting the live state of the address on Base mainnet at the moment of the call.","failureModes":["Missing or malformed address parameter returns a 400 error","Non-0x-prefixed address fails validation","Address not found on Base mainnet may return zero balances rather than an error","Network congestion may cause slightly stale block number data","x402 payment failure or insufficient USDC for the $0.001 fee returns a 402 Payment Required response","Cloudflare tunnel downtime may result in connection errors"],"whenToPreferThis":"Choose this endpoint when you need a single-call summary of a wallet's readiness on Base mainnet — especially when you need multiple data points (ETH balance, USDC balance, nonce, account type, and block number) simultaneously and want to avoid multiple round-trips. Prefer this over individual balance endpoints when you need to quickly assess whether a wallet can participate in a transaction or DeFi action. It is purpose-built for Base mainnet and is not suitable for other EVM chains.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:31:51.466Z","isFirstParty":false}