{"uid":"cap_cVahingigpILnlv12CBQO","slug":"polygon-pos-address-inspector-eb88428b","name":"Polygon PoS Address Inspector","description":"Identify what lives at a Polygon PoS address: wallet (EOA, including EIP-7702 delegation) or contract, which token standard it implements (ERC-20, ERC-721, ERC-1155), name and symbol, upgradeable-proxy implementation and admin, smart-wallet proxies, bytecode size, nonce and POL balance.","url":"https://onchaincheck.dev/polygon/contract?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"Any address on Polygon PoS"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"kind":"ERC-20 token","name":"USD Coin","chain":"polygon","proxy":{"admin":"0x9238E612387eBBA4D4Fa0d76DbFbA99b453417b3","upgradeable":true,"implementation":"0x235AE97b28466Db30469b89A9fe4cFf0659f82Cb"},"symbol":"USDC","address":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","decimals":6,"standards":{"erc20":true,"erc165":false,"erc721":false,"erc1155":false},"isContract":true,"totalSupply":"586295089.86576","bytecodeBytes":1852,"nativeBalance":"0"}},"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":"unknown","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_TxGfmh-YjxurjXKHsd5ny","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":"Identifies what lives at a Polygon PoS address: EOA vs contract, token standard (ERC-20/721/1155), name, symbol, proxy details, bytecode size, nonce, and POL balance.","exampleAgentPrompt":"Can you tell me what the address 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 is on Polygon PoS — is it a wallet or a contract, and if it's a token what's its name, symbol, and whether it's an upgradeable proxy?","exampleUseCases":[{"title":"Token due diligence before trading","prompt":"Before I buy this token, can you look up 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 on Polygon PoS and tell me if it's a real ERC-20, what its name and symbol are, the total supply, and whether it's behind an upgradeable proxy I should be worried about?"},{"title":"Smart contract proxy audit","prompt":"I need to audit this Polygon contract at 0x9238E612387eBBA4D4Fa0d76DbFbA99b453417b3 — is it an upgradeable proxy, and if so who's the admin and what's the current implementation address?"},{"title":"Wallet vs contract classification","prompt":"Can you check whether 0xAbCd1234abcd1234abcd1234abcd1234abcd1234 on Polygon PoS is a regular EOA wallet or a deployed smart contract, and if it's a contract tell me the bytecode size and its POL balance?"}],"resultDescription":"A JSON object containing: the address kind (e.g. 'ERC-20 token', 'EOA', 'smart wallet'), chain identifier ('polygon'), token name and symbol, decimals, total supply, proxy details (upgradeable flag, implementation address, admin address), boolean flags for each ERC standard (ERC-20, ERC-165, ERC-721, ERC-1155), isContract flag, bytecode size in bytes, and native POL balance.","failureModes":["Invalid address format (not a 0x 40-hex-char address) returns a validation error","Address not found or zero-address may return minimal or empty data","RPC timeout or Polygon node unavailability may cause 5xx errors","Non-standard or exotic proxy patterns may not be detected as upgradeable","EIP-7702 delegation may not be detected on older contract deployments"],"whenToPreferThis":"Use this endpoint when you need a comprehensive onchain profile of any Polygon PoS address in a single call — covering wallet vs contract classification, token standard detection, proxy architecture, and native balance. Prefer it over block explorer manual lookups or raw RPC calls when you need structured, agent-readable output. Choose this over Ethereum or Base equivalents when the target address is on Polygon PoS specifically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:41:51.322Z","isFirstParty":false,"canonicalSlug":"polygon-pos-address-inspector-eb88428b"}