Authorizations
x402 blockchain payment authorization header containing signed EIP-3009 Transfer with Authorization
Body
application/json
Retrieve the native cryptocurrency balance of an Ethereum address on a specified blockchain network. Returns the balance in wei (smallest unit) as a hex string. Useful for checking wallet balances, verifying account funds, and monitoring address activity across different blockchains. Requires x402 blockchain payment.
x402 blockchain payment authorization header containing signed EIP-3009 Transfer with Authorization