{"uid":"cap_Qmuyyij4DGXkr5flu2esg","slug":"polygon-pos-wallet-balance-checker-2ca5d64a","name":"Polygon PoS Wallet Balance Checker","description":"Native POL balance of a Polygon PoS wallet plus the balances of up to 20 ERC-20 tokens you list, formatted with each token's symbol and decimals, read live from Polygon PoS.","url":"https://onchaincheck.dev/polygon/balances?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["address"],"properties":{"tokens":{"type":"string","pattern":"^(0x[0-9a-fA-F]{40})(,0x[0-9a-fA-F]{40}){0,19}$","description":"Comma-separated ERC-20 contract addresses on Polygon PoS, up to 20"},"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"Wallet address on Polygon PoS"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"chain":"polygon","tokens":[{"raw":"9885164","token":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","symbol":"USDC","balance":"9.885164","decimals":6},{"raw":"2622273351494","token":"0x53E0bca35eC356BD5ddDFebbD1Fc0fD03FaBad39","symbol":"LINK","balance":"0.000002622273351494","decimals":18}],"address":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","nativeSymbol":"POL","nativeBalance":"592.719767156691654977"}},"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_AUjSr1zC1lK9Gl9YOQAqS","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":"Returns the native POL balance and up to 20 ERC-20 token balances for a given Polygon PoS wallet address, with human-readable formatting using each token's symbol and decimals.","exampleAgentPrompt":"What's the live POL balance and USDC/LINK token balances for the Polygon PoS wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045? Check ERC-20 contracts 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 (USDC) and 0x53E0bca35eC356BD5ddDFebbD1Fc0fD03FaBad39 (LINK).","exampleUseCases":[{"title":"DeFi portfolio snapshot for a wallet","prompt":"Can you pull up the current POL balance plus USDC and WETH holdings for my Polygon wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045? Token contracts are 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 for USDC and 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619 for WETH."},{"title":"Verify payment received in Polygon wallet","prompt":"Did the payment arrive? Check if wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9b on Polygon PoS has any USDC balance — the contract is 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359."},{"title":"Monitor airdrop token distribution","prompt":"Check whether address 0x1234567890123456789012345678901234567890 on Polygon received the airdropped tokens — look up the balance for contract 0xBbba073C31bF03b8ACf7c28EF0738DeCF3695683 along with their native POL balance."}],"resultDescription":"A JSON object containing the wallet address, the native POL balance as a human-readable string, and an array of token objects each with: the ERC-20 contract address, symbol, decimals, raw balance integer string, and formatted decimal balance string. All values are read live from Polygon PoS.","failureModes":["Invalid wallet address format returns a validation error (address must match 0x + 40 hex chars)","Invalid or non-existent ERC-20 contract address may return zero balance or an error","More than 20 token addresses in the tokens parameter will be rejected","Network or RPC unavailability may cause timeouts or 5xx errors","Non-Polygon addresses (e.g. Ethereum mainnet-only contracts) may return zero or unexpected data"],"whenToPreferThis":"Choose this endpoint when you need live, formatted ERC-20 and native POL balances specifically on the Polygon PoS network, especially when you want multiple token balances in a single call. Prefer it over generic blockchain explorers when you need machine-readable decimal-formatted output without parsing raw wei values yourself. Use it over Ethereum or other chain endpoints when the wallet activity is on Polygon PoS.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:38:46.957Z","isFirstParty":false,"canonicalSlug":"polygon-pos-wallet-balance-checker-2ca5d64a"}