{"slug":"api-onesource-io-api-chain-erc1155-balance-41d2eb","title":"ERC1155 token balance via balanceOf (eth_call)","host":"api.onesource.io","method":"GET","resource":"https://api.onesource.io/api/chain/erc1155-balance","category":"market","description":"ERC1155 token balance via balanceOf (eth_call) - how many copies of a token_id a wallet holds","price_listed":0.003,"price_asked":0.003,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":751,"reported_calls_30d":296,"reported_payers_30d":296,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"address":"0xd8da6bf26964af9d7eed9e03e53415d37aa96045","contract":"0xdac17f958d2ee523a2206206994597c13d831ec7","network":"ethereum","token_id":"1"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"properties":{"address":{"pattern":"^0x[a-fA-F0-9]{40}$","type":"string"},"contract":{"pattern":"^0x[a-fA-F0-9]{40}$","type":"string"},"network":{"default":"ethereum","enum":["ethereum","sepolia","robinhood"],"type":"string"},"token_id":{"pattern":"^[0-9]+$","type":"string"}},"required":["address","contract","token_id"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"data":{"description":"Endpoint-specific response payload","properties":{"account":{"type":"string"},"balance":{"type":"string"},"contract_address":{"type":"string"},"token_id":{"type":"string"}},"type":"object"},"error":{"properties":{"code":{"type":"integer"},"message":{"type":"string"}},"type":["object","null"]},"meta":{"properties":{"cost_usdc":{"type":"string"},"endpoint":{"type":"string"},"payment_chain":{"type":"string"},"payment_token":{"type":"string"},"request_id":{"type":"string"}},"required":["endpoint","request_id"],"type":"object"}},"required":["data","meta"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.003,"price_match":true,"latency_ms":751,"error":null}],"description_full":"ERC1155 token balance via balanceOf (eth_call) - how many copies of a token_id a wallet holds","last_updated":"2026-09-24T15:29:42.848Z","schemes":["batch-settlement","exact"]}