{"uid":"cap_qtEXhultA9nzYoD6WLT-5","slug":"beggar-bot-permit2-nonce-lookup-base-mainnet-dcdc5fab","name":"Beggar Bot Permit2 Nonce Lookup (Base Mainnet)","description":"Paid: /v1/verify, /v1/risk, /v1/receipt cost $0.01 USDC per call on Base mainnet via x402 (payTo 0x719227f384b66BFEF00093D6d8d32fA9dC2B40e7); utilities analyze Base mainnet (USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) by default, network=base-sepolia optional; /v1/receipt/verify and discovery files are free. Operator: Beggar Bot.","url":"https://beggar-bot-demand.beggarbot.workers.dev/v1/permit2nonce?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Yo0GBiLwylgnerJdk1p9E","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches the current Permit2 nonce for a given address on Base mainnet, used in EIP-2612/Permit2 signature workflows.","exampleAgentPrompt":"What is the current Permit2 nonce for the wallet address 0xAbC123... on Base mainnet?","exampleUseCases":[{"title":"Pre-signing permit nonce check","prompt":"Before I sign a Permit2 transfer for my wallet 0x1234...abcd on Base mainnet, can you look up the current Permit2 nonce so I don't reuse an old one?"},{"title":"DeFi bot nonce validation","prompt":"My trading bot needs the latest Permit2 nonce for address 0xDeFi...5678 on Base mainnet before constructing the next signed approval — can you fetch it?"},{"title":"Sepolia testnet nonce lookup","prompt":"I'm testing a permit2 flow on Base Sepolia — what's the current permit2 nonce for wallet 0xTest...9999 on base-sepolia?"}],"resultDescription":"Returns a JSON object containing the current Permit2 nonce value for the requested wallet address on the specified network (Base mainnet by default, or Base Sepolia if network=base-sepolia is provided). The nonce is needed to construct valid Permit2 signatures for token approvals and transfers.","failureModes":["Invalid or missing wallet address parameter returns an error response","Network not supported returns a configuration error","Upstream Base RPC unavailable causes a timeout or 5xx error","Malformed request (wrong property types) may return a 400 or JSON error","Rate limiting or payment failure via x402 may block the call"],"whenToPreferThis":"Use this endpoint when you need the current Permit2 nonce for a specific wallet address on Base mainnet (or Base Sepolia) before constructing a Permit2-based signed token approval or transfer. Prefer this over building your own RPC call when you want a simple REST interface to Permit2 nonce data without managing raw Ethereum JSON-RPC infrastructure. It is paid ($0.02 USDC via x402) and targets Base/Base Sepolia specifically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-04T06:34:36.622Z","isFirstParty":false,"canonicalSlug":"beggar-bot-permit2-nonce-lookup-base-mainnet-dcdc5fab"}