MoonPay open-sources wallet standard for AI across blockchains
MoonPay released the Open Wallet Standard, enabling AI agents to hold assets, sign transactions and pay across multiple blockchains without exposing keys.
MoonPay open-sourced the Open Wallet Standard, a wallet infrastructure that lets autonomous AI agents hold assets, sign transactions and make payments across multiple blockchains without exposing private keys. The code is available on GitHub, npm and PyPI.
The company describes the standard as a common wallet layer for AI systems. It is intended to address a gap in the agent economy, where software agents purchase data, access APIs or pay for compute and need a consistent way to transact.
Designed as a universal interface, the Open Wallet Standard can be called by any protocol that requires a signed transaction. It supports Ethereum-compatible networks, Solana, Bitcoin and other ecosystems, so agents can use one wallet API across chains and services.
Security practices center on key management. Private keys are encrypted at rest, decrypted only briefly to sign a transaction and then cleared from memory, according to the MoonPay wallet review. The design is non-custodial, allowing agents to operate without handing control of keys to a third party.
The release builds on MoonPay Agents, a non-custodial software layer introduced in February that lets AI systems interact with wallets and execute transactions programmatically. With a standardized wallet interface, the company aims to simplify how developers connect agents to on-chain applications and payment rails.
MoonPay lists contributions from more than a dozen organizations, including PayPal, Ripple, Circle, Solana Foundation and TON Foundation. The effort is framed as a way to align how agents manage keys and interact with multiple blockchain environments, reducing the need for custom wallet integrations.
Targeted uses include agents paying for datasets, invoking APIs with per-call fees or renting compute capacity. By consolidating wallet functions behind a shared interface, developers can deploy agents across different protocols without redesigning transaction logic for each chain.
MoonPay describes the Open Wallet Standard as open-source and implementation-agnostic, allowing teams to adopt it within existing stacks. Reference implementations released Monday are meant to help developers integrate quickly while following the key security practices outlined in the specification.
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