{"slug":"saylorinnovations-com-api-chain-erc721-tokens-a5a024","title":"NFT count and token ids a wallet owns in one ERC-721 collection on 16 EVM chains","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/chain/erc721-tokens","category":"market","description":"NFT count and token ids a wallet owns in one ERC-721 collection on 16 EVM chains, listed through the Enumerable extension where supported.","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":288,"reported_calls_30d":2,"reported_payers_30d":2,"networks":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"chain":"ethereum","collection":"0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D","limit":"5","owner":"0x46efbaedc92067e6d60e84ed6395099723252496"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"chain":{"description":"chain name (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, mantle, blast, sonic, celo, berachain, unichain) or chain id","type":"string"},"collection":{"description":"the ERC-721 collection contract","type":"string"},"limit":{"description":"token ids to return, 1 to 50 (default 25)","type":"string"},"owner":{"description":"the wallet to inspect","type":"string"}},"required":["chain","owner","collection"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"balance":{"description":"number of tokens the wallet holds in the collection","type":"number"},"chain":{"description":"the chain name that was queried","type":"string"},"chain_id":{"description":"EIP-155 chain id of that network","type":"number"},"collection":{"description":"the ERC-721 contract","type":"string"},"enumerable":{"description":"true when the contract supports ERC-721 Enumerable so token ids can be listed","type":"boolean"},"name":{"description":"collection name","type":["string","null"]},"note":{"description":"listing status","type":"string"},"owner":{"description":"wallet that was inspected","type":"string"},"source":{"description":"where the data was read from","type":"string"},"symbol":{"description":"collection symbol","type":["string","null"]},"token_ids":{"description":"token ids held (up to limit)","type":"array"},"truncated":{"description":"true when more tokens are held than listed","type":"boolean"}},"required":["chain","chain_id","owner","collection","balance","enumerable","token_ids","source"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-21","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":288,"error":null}],"description_full":"NFT count and token ids a wallet owns in one ERC-721 collection on 16 EVM chains, listed through the Enumerable extension where supported.","last_updated":"2026-10-21T02:32:14.317Z","schemes":["exact"]}