{"uid":"cap_dASiYehRg0GaoTxHqqYKM","slug":"a2a-token-safety-verifier-base-l2-eead9d69","name":"A2A Token Safety Verifier (Base L2)","description":"Base L2 EVM token safety verifier: simulates buy/sell, transfer taxes, honeypot checks, proxy resolution, and liquidity. Pass ?token=<Base ERC-20 address>.","url":"https://a2a-verifier-production.up.railway.app/verify","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["token"],"properties":{"token":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"Base L2 ERC-20 token contract address (0x...)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["token","simulation_results","contract_analysis","liquidity_metrics","recommendation"],"properties":{"chain":{"type":"string"},"token":{"type":"string"},"recommendation":{"type":"string"},"schema_version":{"type":"string"},"contract_analysis":{"type":"object"},"liquidity_metrics":{"type":"object"},"simulation_results":{"type":"object"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_HwPu9jy8FcoC5r-huTc5c","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Simulates buy/sell transactions, checks for honeypots, analyzes transfer taxes, resolves proxies, and measures liquidity for ERC-20 tokens on Base L2.","exampleAgentPrompt":"Before I buy this token, can you run a full safety check on it — simulate buy and sell, check for honeypot behavior, look at transfer taxes and liquidity — the contract address on Base is 0x4200000000000000000000000000000000000006.","exampleUseCases":[{"title":"Honeypot check before DeFi trade","prompt":"I'm about to swap into this Base token at 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 — can you check if it's a honeypot and whether I'd actually be able to sell it afterward?"},{"title":"Transfer tax discovery for token","prompt":"What are the buy and sell transfer taxes on this Base L2 token? Contract is 0x4ed4e862860bed51a9570b96d89af5e1b0efefed — I want to know before I commit funds."},{"title":"Liquidity and contract safety audit","prompt":"Can you do a full safety audit on Base token 0x940181a94a35a4569e4529a3cdfb74e38fd98631? I need to know about its liquidity, whether the contract is a proxy, and if there are any red flags."}],"resultDescription":"Returns a structured JSON object containing: token address and chain, simulation results (buy/sell success, amounts in/out), contract analysis (proxy status, ownership, flags), liquidity metrics (pool depth, reserves), and a plain-language recommendation summarizing overall safety.","failureModes":["Invalid or malformed token address (not a 0x 40-hex-char address) returns a validation error","Token address not deployed on Base L2 returns a contract-not-found error","RPC or simulation timeout may return incomplete results","Unverified or heavily obfuscated contracts may yield limited analysis","Payment not received (x402) results in 402 Payment Required response"],"whenToPreferThis":"Use this endpoint when you need a quick, automated safety assessment of an ERC-20 token specifically on the Base L2 network before executing a trade or recommending a token to a user. It is distinct from general Ethereum mainnet scanners and combines buy/sell simulation, honeypot detection, tax analysis, proxy resolution, and liquidity checks in a single call — ideal for DeFi agents that need a holistic risk verdict without calling multiple separate APIs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:38:10.687Z","isFirstParty":false}