OWS targets fragmentation by offering a single signing interface that allows cross‑agent wallet usability while keeping private keys from direct exposure to agents.

Current implementation runs software‑only, decrypting private keys within the agent process and protecting them from swap files and memory wiping, though highly privileged attackers could access memory during signing.

The rollout includes an installation script and SDKs (Node.js and Python), with the specification and source hosted on GitHub and the openwallet.sh site.

Developer tooling features Node.js and Python SDKs, a CLI, an MCP server interface, and straightforward installation, with full documentation publicly available.

Key technical features include zero key exposure, AES‑256‑GCM encrypted keys decrypted only to sign, a local‑first wallet vault on the user’s machine, and a single seed phrase for multi‑chain accounts across major ecosystems.

Other industry efforts include Coinbase’s x402 protocol for stablecoin transfers over HTTP and Visa/Tempo tools enabling AI systems to initiate payments and execute transactions programmatically.

MoonPay unveils the Open Wallet Standard (OWS), an open‑source framework that gives AI agents a unified, cross‑chain way to hold funds and sign blockchain transactions.

The standard is modular and MIT‑licensed, comprising seven sub‑specifications for storage, signing, policies, agent access, key isolation, wallet lifecycle, and supported chains, enabling independent adoption without vendor lock‑in.

Policy‑driven signing governs spending with limits, allowlists, chain restrictions, and time‑bound authorizations to prevent unrestricted agent access to funds.

MoonPay stresses that OWS improves security against key exposure in logs and LLM contexts but does not claim protection against all threats, acknowledging in‑process limitations.

OWS has broad industry backing from more than a dozen organizations, including PayPal, Circle, Ethereum Foundation, Solana Foundation, and other major foundations and infrastructure providers.

Related developments include BitGo’s Model Context Protocol server, enabling AI tools to navigate wallet functions and staking via natural language in development environments.