{"uid":"cap_9Rhsqh6c0lL-1dXz82_U1","slug":"token-risk-assessment-on-base-x402-875d9a07","name":"Token Risk Assessment on Base (x402)","description":"Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.","url":"https://kr-x402-mvp.kgy5612.workers.dev/api/chain/token-risk?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","examples":["0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"],"description":"Base ERC-20 contract"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"chain":"base","flags":["upgradeable_proxy"],"token":{"symbol":"USDC","decimals":6,"holder_count":11391096},"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","reasons":["upgradeable proxy (logic can change)"],"trading":{"buy_tax":0,"sell_tax":0,"honeypot_sim":{"is_honeypot":false},"top10_holder_pct":26.49},"verdict":"OK","can_sell":true,"contract":{"is_contract":true,"bytecode_bytes":1852,"verified_source":true},"risk_level":"low","risk_score":5,"should_buy":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rPnrCGL2LChcbL651tnHf","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a risk score, verdict, and safety flags for any ERC-20 token contract on Base chain, including honeypot detection, buy/sell tax, holder concentration, and contract verification status.","exampleAgentPrompt":"Before I swap into it, can you check whether the token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base is safe — look up its risk score, whether it's a honeypot, and if the top holders are too concentrated?","exampleUseCases":[{"title":"Pre-trade safety check for DeFi bot","prompt":"I'm about to buy 0x4200000000000000000000000000000000000006 on Base — can you run a risk check on it first and tell me if it's flagged as a honeypot or has any dangerous contract flags?"},{"title":"Token vetting for portfolio agent","prompt":"I want to add a new token to my watchlist: 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA on Base. Can you tell me the risk level, whether the source is verified, and what the top-10 holder concentration looks like?"},{"title":"Automated rug-pull screening","prompt":"Screen this Base token 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb for me — I need to know the risk score, verdict, sell tax, and whether it's an upgradeable proxy before my agent executes any trade."}],"resultDescription":"A JSON object with: chain ('base'), token symbol and decimals, holder count, risk_score (0–100 int), risk_level ('low'/'medium'/'high'), verdict ('OK' or flagged), can_sell and should_buy booleans, flags array (e.g. 'upgradeable_proxy'), reasons array explaining flags, honeypot simulation result, buy/sell tax rates, top-10 holder percentage, and contract metadata (is_contract, bytecode_bytes, verified_source).","failureModes":["Invalid address format (not a valid 0x ERC-20 address) returns a 400 error","Contract address not found on Base chain returns empty or error response","Payment via x402/USDC not completed results in 402 Payment Required before data is returned","Unverified or very new contracts may return incomplete data or higher uncertainty scores","Rate limits or worker downtime may cause 5xx responses"],"whenToPreferThis":"Use this endpoint when an AI trading agent or DeFi automation needs a quick, pay-per-call token safety check on Base chain without managing API keys. Ideal for agents that need honeypot detection, tax analysis, and holder concentration in a single call before executing a swap. Prefer this over full on-chain analysis when low latency and micropayment billing (USDC via x402) are preferred over subscription APIs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:42:10.938Z","isFirstParty":false,"canonicalSlug":"token-risk-assessment-on-base-x402-875d9a07"}