Authorizations
x402 blockchain payment authorization header containing signed EIP-3009 Transfer with Authorization
Body
application/json
Get the number of transactions sent from an Ethereum address (nonce). Returns the transaction count as a hex string. Essential for transaction creation and replay protection. Useful for analyzing account activity and determining the next nonce for transaction signing. Requires x402 blockchain payment.
x402 blockchain payment authorization header containing signed EIP-3009 Transfer with Authorization