Library > EIP-3009 Checker

EIP-3009 Checker

Detect EIP-3009 support for gasless transfers.

What is EIP-3009?

EIP-3009 enables gasless token transfers using signed authorizations. Required for x402 payment system. This tool checks for transferWithAuthorization and receiveWithAuthorization functions.

For x402 Integration:

Tokens showing "EIP-3009 Likely" can be added to the x402 allowlist for gasless payment support. Copy the JSON result and add it to src/config/x402Tokens.ts