ERC-4337 session keys for AI agent payments

ERC-4337 session keys for AI agents

For AI agents to participate in the on-chain economy, they need a way to execute transactions on blockchain networks (like Base) securely and autonomously. ERC-4337, or Account Abstraction, provides the foundation for this via session keys.

What is a session key?

A session key is a temporary, limited-purpose key that is authorized by a user's main wallet. Instead of giving an AI agent full control over your wallet (which would be a major security risk), you authorize a session key that can only:

1. Spend up to a certain amount (e.g., 50 USDC).
2. Interact with specific contracts (e.g., the SecureLend settlement contract).
3. Expire after a set time (e.g., 24 hours).

Delegare and Base

SecureLend's Delegare layer uses ERC-4337 account abstraction on the Base network to manage these session keys. When an agent needs to pay for a document classification task, it uses its authorized session key to trigger a USDC payment.

The user gets the benefit of autonomous AI work with the security of blockchain-enforced spending limits.

The End of Human-in-the-Loop Payments

Session keys represent the end of the "Approval" button for micro-transactions. By pre-authorizing an agent within a safe "envelope," humans can delegate work to AI that includes the ability to settle its own debts instantly and globally.

Related

• What is trustless agent payment authorization?
• Visit Delegare.dev