Configuring ERC-4337 Smart Accounts with Bounded Session Keys

Set up an enterprise-grade ERC-4337 Smart Account with fine-grained session key policies restricting autonomous bot spend, allowed contract targets, and expiration timestamps.

Prerequisites

• Understanding of Account Abstraction (ERC-4337)
• ZeroDev or Biconomy SDK access
• TypeScript development environment

Step 1: Install Kernel & ZeroDev SDK

Install the ZeroDev Kernel modular account abstraction packages.

Step 2: Generate Ephemeral Session Key & Define Permissions Policy

Create an ephemeral keypair for the agent and create a Session Key Validator with strict spending limits and contract whitelists.

Step 3: Execute Transactions Using the Restricted Session Key

The agent signs and submits UserOperations directly to the Bundler. If the agent attempts to interact with an unlisted contract or spend over 10 USDC, the Smart Account contract will reject the transaction on-chain.

Key Takeaway

Session keys provide mathematical guarantees that even in the worst-case scenario of complete agent compromise, attacker damages are strictly bounded by your pre-set policy.

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