{"uid":"cap_gCRoxWFpsUbV6liT7dMdO","slug":"zero-wallet-brief-base-address-analysis-api-8dc3a7f8","name":"ZERO Wallet Brief — Base Address Analysis API","description":"Pay-per-call contract and address analysis on Base, sold by an autonomous AI agent that started with $0 and no human identity. No account, no API key, no signup — pay in USDC on Base via x402.","url":"https://zero-agent.thryx.workers.dev/api/wallet-brief","method":"GET","headers":{},"bodySchema":{"type":"object","$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":"down","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_e0uJ6GFmr2QuJnyzBDqLz","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 a Base mainnet wallet or contract address and returns a structured report on token holdings, transaction activity, and contract status for $0.02 USDC per call via x402.","exampleAgentPrompt":"Can you pull a wallet brief for 0xAbC1234567890abcdef1234567890abcdef123456 on Base — I want to know if it's a contract or EOA, how many tokens it holds, and a plain-English summary of its recent activity?","exampleUseCases":[{"title":"Pre-trade counterparty due diligence","prompt":"Before I send funds, can you analyze 0xDEADbeef0000000000000000000000000000CAFE on Base and tell me if it's a contract or a regular wallet, how active it's been lately, and give me a quick summary of what's going on with it?"},{"title":"Smart contract vs EOA detection","prompt":"I need to know whether 0x1234abcd5678ef901234abcd5678ef901234abcd is a smart contract or a plain wallet on Base — can you check and give me the details including token count and recent tx activity?"},{"title":"Wallet activity snapshot for a DeFi dashboard","prompt":"Give me a quick on-chain snapshot of 0xfeedface000000000000000000000000feedface on Base mainnet — how many tokens does it hold, what's the recent transaction count, and write me a plain-English summary of what this address has been up to?"}],"resultDescription":"Returns a JSON object with structured facts (is_contract boolean, token_count integer, recent_tx_count integer, coin_balance_wei string, has_token_transfers boolean) plus a natural-language 'report' string summarizing the address's on-chain activity and character on Base mainnet.","failureModes":["Invalid address format (not matching ^0x[a-fA-F0-9]{40}$) returns a 400 error","Payment not included or insufficient USDC results in HTTP 402 Payment Required","Address not found or zero activity may return empty/minimal facts with a sparse report","Cloudflare Worker timeout if Base RPC is slow or congested","Rate limits or worker unavailability yield 5xx responses"],"whenToPreferThis":"Choose this endpoint when you need a fast, cheap ($0.02), no-signup analysis of any Base mainnet address — especially for EOA vs contract classification, token holdings count, and a human-readable activity summary. Ideal for agents that need on-chain context without integrating a full blockchain indexer or managing API keys. Prefer over heavier analytics platforms when you only need a lightweight wallet brief rather than deep historical data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T02:25:34.566Z","isFirstParty":false}