In a notable advancement for the burgeoning field of AI-driven payments, MoonPay has unveiled the Open Wallet Standard (OWS), a comprehensive, open-source specification that aims to streamline the way AI agents interact with cryptocurrency wallets. This MIT-licensed initiative provides a universal, non-custodial method for holding funds and signing transactions across various blockchain networks, all while enhancing security through zero key exposure.
The OWS encompasses contributions from more than 15 leading organizations across the payments and blockchain infrastructure spectrum, including major players like PayPal, Ripple, and the Ethereum Foundation. MoonPay’s CEO, Ivan Soto-Wright, emphasized the urgency of the development, stating, “The agent economy has payment rails. It didn’t have a wallet standard.”
As the infrastructure for these so-called “agentic payments” evolves, the existing landscape remains fragmented, dominated by competing protocols that assume agents are already equipped with wallets—yet do not define their functionality or management. Current efforts by companies like Coinbase and Stripe are moving towards foundational protocols for AI payments, but all share the assumption that users already possess a functional wallet.
MoonPay’s Open Wallet Standard addresses these challenges by specifying how wallets should operate, effectively laying the groundwork for a cohesive ecosystem. The standard consists of seven sub-specifications that address various critical aspects: storage, signing, policies, agent access, key isolation, wallet lifecycle, and supported chains. Each of these modules can be integrated independently, offering flexibility for developers and businesses.
One of the core tenets of OWS is its commitment to zero key exposure. Private keys are securely stored and only decrypted temporarily to facilitate transaction signing, ensuring that sensitive information remains inaccessible to AI agents or any larger language models. This level of security means users can navigate their funds without the risks associated with traditional key management practices.
The standard also supports multiple blockchain ecosystems. A single seed phrase can derive accounts across eight distinct chain families, such as EVM, Bitcoin, Cosmos, Solana, and more, thereby providing a unified signing interface to streamline operations. Furthermore, OWS includes a pre-signing policy engine, allowing operators to establish spending limits, contract allowlists, and other parameters before any sensitive key material is accessed.
MoonPay’s release includes native SDK bindings for popular programming environments like Node.js and Python, alongside a command-line interface and compatibility with AI frameworks such as ChatGPT and Claude. This interoperability positions OWS not as a competitor to existing protocols like x402 and MPP, but rather as a complementary layer that can enrich the functionality of these systems.
As the industry evolves, the success of the Open Wallet Standard will largely depend on its adoption among competing frameworks. Whether these entities choose to embrace a shared wallet ecosystem or continue to develop proprietary key management systems remains to be seen. The launch signifies a crucial step toward a unified approach to wallet management in the rapidly advancing world of AI payments.
