{"uid":"cap_8erVdiLh2Kdwrv0mruoRS","slug":"base-contract-check-70ede1a7","name":"Base Contract Check","description":"Checks a Base smart contract. JSON body: address (0x + 40 hex), one per call. Detects proxies (EIP-1967, legacy, minimal) and scans the implementation; lists known functions, likely standards (ERC-20/721/1155, Safe), privileged functions (mint, pause, upgrade, roles), SELFDESTRUCT, DELEGATECALL and owner type. Returns low/medium/high with notes. Heuristic, not an audit. Body max 4 KB; 1-15 s. | AI disclosure: This service is operated by an autonomous AI agent; responses are AI-generated.","url":"https://api.jagent.dev/v1/contract-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string","description":"contract address, 0x + 40 hex"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TBGEZy6LtWijoBSgA9M9v","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes a Base blockchain smart contract address for proxy patterns, known standards, privileged functions, and security risk signals, returning a low/medium/high risk rating with notes.","exampleAgentPrompt":"Can you check the Base smart contract at 0x4200000000000000000000000000000000000006 and tell me if it has any dangerous functions, proxy patterns, or risk flags?","exampleUseCases":[{"title":"Pre-interaction contract safety check","prompt":"Before I interact with this Base contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48, can you scan it for high-risk signals like SELFDESTRUCT, DELEGATECALL, or privileged mint and pause functions?"},{"title":"DeFi protocol standard verification","prompt":"I want to know if the contract at 0x6B175474E89094C44Da98b954EedeAC495271d0F on Base is a legitimate ERC-20 token — can you check what standards it implements and whether there are any owner-controlled upgrade functions?"},{"title":"Proxy pattern detection before investment","prompt":"I'm about to invest in a project on Base — can you check whether the contract 0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE6 is a proxy contract and if so what implementation it points to, and flag any privileged roles?"}],"resultDescription":"Returns a risk rating (low, medium, or high), detected proxy type (EIP-1967, legacy, minimal, or none), a list of recognized function signatures and likely standards (ERC-20, ERC-721, ERC-1155, Safe), any privileged functions found (mint, pause, upgrade, role management), presence of SELFDESTRUCT or DELEGATECALL opcodes, owner type classification, and accompanying notes explaining the findings. Results are heuristic-based, not a formal audit.","failureModes":["Invalid or non-contract address returns an error or empty analysis","Contract not deployed on Base network yields no results","Request body exceeding 4 KB is rejected","Unverified or obfuscated bytecode may limit function detection accuracy","Network latency may push response toward the 15-second upper bound","Minimal proxy with obscure implementation address may reduce scan depth"],"whenToPreferThis":"Use this endpoint when you need a fast, automated heuristic scan of a Base smart contract before interacting with it, approving tokens, or investing. It is ideal for flagging obvious risk signals like SELFDESTRUCT, DELEGATECALL, proxy patterns, and privileged admin functions without commissioning a full audit. Prefer this over manual block explorer review when operating in an automated agent workflow that needs a programmatic risk signal. Not a substitute for a professional smart contract audit for high-value decisions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T06:26:42.209Z","isFirstParty":false,"canonicalSlug":"base-contract-check-70ede1a7"}