{"slug":"saylorinnovations-com-api-chain-allowance-bae6fb","title":"ERC-20 allowance on 16 EVM chains","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/chain/allowance","category":"other","description":"ERC-20 allowance on 16 EVM chains: how much a spender may move from an owner, scaled by decimals, with unlimited and zero flags.","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":356,"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","owner":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","spender":"0x000000000022D473030F116dDEE9F6B43aC78BA3","token":"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"},"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"},"owner":{"description":"the wallet that granted the approval","type":"string"},"spender":{"description":"the contract or wallet allowed to spend","type":"string"},"token":{"description":"the ERC-20 token contract","type":"string"}},"required":["chain","token","owner","spender"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"allowance":{"description":"allowance divided by 10^decimals","type":["string","null"]},"allowance_raw":{"description":"allowance in the smallest unit","type":"string"},"chain":{"description":"the chain name that was queried","type":"string"},"chain_id":{"description":"EIP-155 chain id of that network","type":"number"},"decimals":{"description":"token decimals","type":["number","null"]},"is_unlimited":{"description":"true when the allowance is at least half of the maximum uint256 (a standard unlimited approval)","type":"boolean"},"is_zero":{"description":"true when no allowance is set","type":"boolean"},"owner":{"description":"wallet that granted the approval","type":"string"},"source":{"description":"where the data was read from","type":"string"},"spender":{"description":"address allowed to spend","type":"string"},"symbol":{"description":"token symbol","type":["string","null"]},"token":{"description":"the token contract","type":"string"}},"required":["chain","chain_id","token","owner","spender","allowance_raw","is_unlimited","is_zero","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":356,"error":null}],"description_full":"ERC-20 allowance on 16 EVM chains: how much a spender may move from an owner, scaled by decimals, with unlimited and zero flags.","last_updated":"2026-10-21T02:12:42.48Z","schemes":["exact"]}