{"uid":"cap_HVeA0ul52vsDZEsVYbg9E","slug":"apex-smart-contract-risk-check-a0c718b8","name":"APEX Smart Contract Risk Check","description":"Smart contract risk check (Base, Arc): can the owner mint, pause, blacklist, change fees or upgrade the code? What can the people behind this contract do to holders? Pass ?chain=base|arc&address=0x... and we read its bytecode on chain (and the code behind a proxy): mint, pause, blacklist, change fees or taxes, cap wallets, switch trading off, upgrade the code. Plus proxy type, who owns it now (renounced or a live wallet or contract) and basic token data.","url":"https://apexfaucet.xyz/api/x402/contract-flags?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["chain","address"],"properties":{"chain":{"enum":["base","arc"],"type":"string","description":"Which chain: base or arc."},"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"The contract address (0x...)."}}}}},"output":{"type":"object"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_WJOh34zuKZOe8k8Vq7Ms8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes a smart contract's bytecode on Base or Arc chain to detect dangerous owner privileges such as minting, pausing, blacklisting, fee changes, and upgradability","exampleAgentPrompt":"Can you check this Base chain token contract 0x1234567890abcdef1234567890abcdef12345678 for dangerous owner powers — like whether they can mint more tokens, blacklist holders, pause trading, change fees, or upgrade the code?","exampleUseCases":[{"title":"Pre-investment rug pull screening","prompt":"Before I buy this token on Base, can you check if the contract 0xabc123def456abc123def456abc123def456abc1 gives the team any dangerous powers — like minting, blacklisting, or pausing trading?"},{"title":"DeFi protocol ownership audit","prompt":"Is the owner of this Arc contract 0xdeadbeef1234567890deadbeef1234567890dead still a live wallet, or has ownership been renounced? Also tell me if the contract can be upgraded or has any fee-change functions."},{"title":"Token contract proxy detection","prompt":"I want to know if this Base contract 0xfeedface0000000000feedface0000000000feed is a proxy and what kind — and whether whoever controls it can silently change the underlying code or swap fees on holders."}],"resultDescription":"Returns a set of boolean risk flags (mint, pause, blacklist, fee/tax change, wallet cap, trading switch, upgrade), the proxy type if applicable, the current owner address with indication of whether it is renounced or a live wallet/contract, and basic token metadata.","failureModes":["Invalid or non-checksummed contract address returns an error","Contract address is an EOA (externally owned account), not a contract","Unsupported chain value other than 'base' or 'arc'","Contract bytecode not yet indexed or very recently deployed","Proxy target contract not resolvable or self-destructed","Payment failure or insufficient USDC balance for x402 fee"],"whenToPreferThis":"Choose this endpoint when you need rapid, on-chain bytecode-level risk assessment for a specific ERC20 or DeFi contract on Base or Arc, particularly to detect dangerous owner privileges before investing or integrating. It is more targeted than a full audit and faster than manual bytecode review, especially when the contract may be a proxy.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:44:12.999Z","isFirstParty":false,"canonicalSlug":"apex-smart-contract-risk-check-a0c718b8"}