Question 1

What is Steward?

Accepted Answer

Steward is open-source auth and wallet infrastructure for autonomous AI agents. It provides AES-256-GCM encrypted key storage for EVM and Solana wallets, a policy engine with 6 composable rule types, multiple authentication methods, and a proxy gateway that injects credentials so agents never see raw API keys or private keys.

Question 2

How do I install and use Steward?

Accepted Answer

Install the SDK with npm install @stwd/sdk. Initialize a StewardClient with your base URL, API key, and tenant ID. Create wallets with createWallet(), then sign transactions with signTransaction() — all policy-enforced at the signing layer. For self-hosting, see the Deployment Guide in the repository.

Question 3

Is Steward free and open source?

Accepted Answer

Yes, Steward is open source under the MIT license and free to use. The core SDK, server, and React components are all publicly available on GitHub. You can self-host the entire stack with no per-transaction fees.

Question 4

How does Steward compare to Coinbase AgentKit or other embedded wallets?

Accepted Answer

Steward is built specifically for autonomous agents rather than consumer apps. Unlike closed-source embedded wallets, Steward is fully self-hostable, has no per-transaction fees, and enforces policies at the signing layer with spending limits, rate limits, and address whitelists. It also protects API keys and database credentials through its proxy gateway, not just crypto keys.

Question 5

What chains and auth methods does Steward support?

Accepted Answer

Steward supports EVM wallets across 7 chains plus Solana. Authentication options include passkeys, email magic links, SIWE (Sign-In with Ethereum), and Google/Discord OAuth with JWT sessions and refresh token rotation.

Steward

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