{"uid":"cap_7mUgEWmYiEwHuByN-YKNi","slug":"mint-intel-base-proxy-contract-detection-8401626d","name":"Mint Intel: Base Proxy Contract Detection","description":"Detect upgradeable proxies on Base via eth_getStorageAt - EIP-1967 (transparent, UUPS, beacon), legacy OpenZeppelin (zos), EIP-1822, Safe, EIP-1167 clones and EIP-7702 delegation - and return the implementation, admin and beacon addresses behind the proxy.","url":"https://mintintel.35-171-220-195.sslip.io/v1/base/proxy/:address?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"},"pathParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","description":"0x-prefixed 20-byte EVM address"}},"additionalProperties":false},"queryParams":{"type":"object","properties":{},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["address","isProxy"],"properties":{"address":{"type":"string"},"isProxy":{"type":"boolean"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5EIP4zrpXCgQEI2OsL8xL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Detects upgradeable proxy patterns on Base chain and returns the implementation, admin, and beacon addresses behind a given proxy contract address.","exampleAgentPrompt":"Check if the Base contract at 0x4200000000000000000000000000000000000010 is a proxy and tell me what implementation address is behind it.","exampleUseCases":[{"title":"Audit upgradeable proxy before interaction","prompt":"Before I interact with this Base contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48, can you check if it's a proxy and tell me what implementation contract it points to and who the admin is?"},{"title":"Verify EIP-1967 transparent proxy setup","prompt":"I'm doing a security review — is the Base contract 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD using an EIP-1967 transparent proxy pattern, and what's the underlying logic contract address?"},{"title":"Detect minimal clone proxy on Base","prompt":"Can you check whether the Base address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is an EIP-1167 minimal proxy clone and what contract it delegates to?"}],"resultDescription":"Returns the contract address queried, a boolean indicating whether it is a proxy, the detected proxy standard (e.g. EIP-1967 transparent, UUPS, beacon, EIP-1167, EIP-1822, Safe, EIP-7702, OpenZeppelin zos), and the resolved implementation address, admin address, and/or beacon address as applicable.","failureModes":["Address is not a contract (EOA) — returns isProxy: false with no implementation data","Invalid or malformed address format — returns 400 error","Contract exists but uses no recognized proxy pattern — returns isProxy: false","RPC node unavailable or Base network issues — returns 5xx error","Address has no storage at known proxy slots — treated as non-proxy"],"whenToPreferThis":"Use this endpoint when you need to determine whether a Base chain contract is a proxy and resolve its underlying implementation, admin, or beacon address. It covers all major proxy standards (EIP-1967, UUPS, beacon, EIP-1167, EIP-1822, Safe, EIP-7702, legacy OpenZeppelin) in a single call. Prefer this over raw eth_getStorageAt calls when you want a high-level answer without manually computing storage slots for each proxy standard.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:33.548Z","isFirstParty":false,"canonicalSlug":"mint-intel-base-proxy-contract-detection-8401626d"}