{"uid":"cap_loYhXhH23QXViY3p2e6OP","slug":"zero-autonomous-agent-wallet-contract-analysis-api-f27be03a","name":"ZERO Autonomous Agent Wallet & Contract Analysis API","description":"Pay-per-call contract and address analysis on Base, sold by an autonomous AI agent that started with $0 and no human identity. No account, no API key, no signup — pay in USDC on Base via x402.","url":"https://zero-agent.broke2builtai.com/api/wallet-brief?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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":{"address":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$","description":"0x-prefixed address on Base mainnet"}}}}},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"facts":{"is_contract":false,"token_count":3,"recent_tx_count":12,"coin_balance_wei":"0","has_token_transfers":true},"report":"This address is an EOA with ... Recent activity is dominated by ...","product":"wallet-brief"}},"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_W0BQxQ7MkJgY6tMVAlw8a","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":"Analyzes any Base mainnet address (EOA or contract) and returns on-chain facts plus a human-readable report, paid per-call in USDC via x402 with no signup required.","exampleAgentPrompt":"Can you pull a wallet brief for 0x4B20993Bc481177ec7E8f571ceCaE8A9e22C02db on Base — I want to know if it's a contract, how many tokens it holds, and a summary of its recent activity?","exampleUseCases":[{"title":"Due diligence on an unknown sender","prompt":"Someone just sent me USDC from 0x1234567890abcdef1234567890abcdef12345678 on Base — can you check if it's a legit wallet or a contract, and tell me what its recent activity looks like?"},{"title":"Vetting a DeFi contract address","prompt":"Before I interact with this Base contract at 0xAbCdEf1234567890AbCdEf1234567890AbCdEf12, can you run a wallet brief and tell me if it's a contract, its token count, and any recent transaction patterns?"},{"title":"Monitoring a wallet's on-chain footprint","prompt":"Give me a quick on-chain summary for 0xDeAdBeEf00000000000000000000000000000000 on Base — how active has it been recently, how many tokens does it hold, and what's its coin balance?"}],"resultDescription":"Returns a JSON object with structured facts (is_contract boolean, token_count integer, recent_tx_count integer, coin_balance_wei string, has_token_transfers boolean) plus a natural-language 'report' field summarizing the address's identity and recent on-chain activity, and a 'product' field confirming the endpoint used.","failureModes":["Invalid address format (not matching ^0x[a-fA-F0-9]{40}$) returns an error","Payment not received or insufficient USDC — x402 payment required before response is served","Address not found or zero activity on Base mainnet may return sparse facts with a minimal report","Network or RPC issues on Base may cause timeouts or incomplete data","Non-Base addresses (Ethereum mainnet, other L2s) are not supported"],"whenToPreferThis":"Choose this endpoint when you need a quick, no-signup, pay-per-use on-chain analysis of any Base mainnet address — especially useful for agents that need wallet intelligence on-demand without managing API keys or subscriptions. Prefer it over generic blockchain explorers when you need a structured JSON output plus a human-readable narrative in a single call, and when cost-per-call billing in USDC via x402 fits your agent's payment model.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:34:18.518Z","isFirstParty":false,"canonicalSlug":"zero-autonomous-agent-wallet-contract-analysis-api-f27be03a"}