Authorizations
x402 blockchain payment authorization header containing signed EIP-3009 Transfer with Authorization
Body
application/json
Execute a smart contract call without sending a transaction to the blockchain network. Simulates contract interactions to read data or test contract behavior. Useful for querying contract state, testing contract functions, and getting return values from view/pure functions without gas costs. Requires x402 blockchain payment.
x402 blockchain payment authorization header containing signed EIP-3009 Transfer with Authorization