Web3 SDK Wallet Operations FAQs

Question 1

What is the two-wallet system in the Bankr SDK?

Accepted Answer

It separates the Payment Wallet (required for $0.01 USDC API micropayments) from the Context Wallet (receives tokens/NFTs). This enhances security by keeping trading funds in a separate address.

Question 2

What are the requirements for the payment wallet?

Accepted Answer

The payment wallet must have a small USDC balance on the Base chain to cover x402 micropayments (typically $0.01 per API request).

Question 3

Can I use different wallets for different transaction requests?

Accepted Answer

Yes, you can provide a specific walletAddress in the prompt options to override the default receiving address for that specific request only.

Question 4

How do I securely provide my private key to the SDK?

Accepted Answer

Private keys should always be stored in environment variables (e.g., BANKR_PRIVATE_KEY) and never hardcoded. Use a .env file and ensure it is included in your .gitignore.

Question 5

What is the purpose of the getWalletAddress() method?

Accepted Answer

It returns the address currently configured for context; if no override is provided, it returns the address derived from the payment wallet's private key.

Web3 SDK Wallet Operations

Key Features

Use Cases

Web3 SDK Wallet Operations

Key Features

Use Cases