{"slug":"agent402-tools-api-transfer-authorization-276338","title":"Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC trans","host":"agent402.tools","method":"POST","resource":"https://agent402.tools/api/transfer-authorization","category":"market","description":"Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei - the exact EIP-712 object an agent signs with its OWN key to authorize an x402 payment. We construct it; we never sign or send. Non-custodial.","price_listed":0.003,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":5,"reported_payers_30d":1,"networks":["algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=","eip155:10","eip155:1329","eip155:137","eip155:143","eip155:42161","eip155:42220","eip155:43114","eip155:4663","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","stellar:pubnet"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"amount":0.01,"from":"0x1111111111111111111111111111111111111111","network":"base","to":"0x2222222222222222222222222222222222222222"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"amount":{"description":"USDC amount (e.g. 0.01)","type":"number"},"from":{"description":"payer address (the wallet that will sign)","type":"string"},"network":{"description":"chain: base | polygon | arbitrum | optimism | ethereum | monad | celo | avalanche | sei | robinhood (default base)","type":"string"},"to":{"description":"recipient address","type":"string"},"validForSeconds":{"description":"how long the authorization is valid (default 3600)","type":"number"}},"required":["from","to","amount"]},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"network":{"type":"string"},"typedData":{"properties":{"domain":{"properties":{"chainId":{"type":"integer"},"name":{"type":"string"},"verifyingContract":{"type":"string"},"version":{"type":"string"}},"type":"object"},"message":{"type":"object"},"primaryType":{"type":"string"}},"type":"object"}},"required":["typedData","network"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/Ethereum/Monad/Celo/Avalanche/Sei - the exact EIP-712 object an agent signs with its OWN key to authorize an x402 payment. We construct it; we never sign or send. Non-custodial.","last_updated":"2026-09-22T16:33:39.189Z","schemes":["exact","upto"]}