Get the x402 credit balance for a wallet address. Requires Sign-in-with-x authentication (via SIWE) for the same wallet.
base64-encoded JSON SIWE payload message proving wallet ownership
base64-encoded JSON SIWE payload message proving wallet ownership
"siwx_example_token"
Ethereum wallet address.
^0x[a-fA-F0-9]{40}$"0xYOUR_WALLET_ADDRESS"