{"slug":"api-x402node-dev-chain-token-approvals-e1a979","title":"Check the exact ERC20 allowance an owner has granted to a spender contract, flag","host":"api.x402node.dev","method":"GET","resource":"https://api.x402node.dev/chain/token-approvals","category":"market","description":"Check the exact ERC20 allowance an owner has granted to a spender contract, flagging unlimited approvals for revocation, on EVM chains. token allowance, approval check, unlimited approval, revoke allowance, spender allowance, wallet security Accepts payment on Base or Solana — either network works.","price_listed":0.005,"price_asked":0.005,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":514,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"address":"string","chain":"string","owner":"string","spender":"string","token":"string"},"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":{"address":{"description":"EVM/chain address (optional)","type":"string"},"chain":{"description":"ethereum, base (default), arbitrum, optimism, polygon","type":"string"},"owner":{"description":"Token owner address (required)","type":"string"},"spender":{"description":"Spender contract address (required)","type":"string"},"token":{"description":"ERC20 contract address (required)","type":"string"}},"required":["token","owner","spender"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-10","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.005,"price_match":true,"latency_ms":514,"error":null}],"description_full":"Check the exact ERC20 allowance an owner has granted to a spender contract, flagging unlimited approvals for revocation, on EVM chains. token allowance, approval check, unlimited approval, revoke allowance, spender allowance, wallet security Accepts payment on Base or Solana — either network works.","last_updated":"2026-10-04T15:22:14.319Z","schemes":["exact"]}