guardian-wallet and mpc-agent-wallet
These are direct competitors offering similar threshold MPC wallet infrastructure for AI agents, with the second providing more mature production-grade implementation (2-of-3 signatures, multi-chain support, ERC-4337) compared to the first's simpler guardian model.
About guardian-wallet
AgentaOS/guardian-wallet
Threshold MPC wallet for AI Agents
Implements 2-of-3 threshold ECDSA via CGGMP24 protocol where key shares are distributed across agent, server (HashiCorp Vault), and user (passkey-encrypted browser storage), ensuring the full private key never exists in any single location. Built as a self-hosted alternative to enterprise MPC services, it provides CLI, SDK, and Model Context Protocol (MCP) server interfaces alongside a web dashboard with 9 built-in policy types for transaction authorization before signing.
About mpc-agent-wallet
Kazopl/mpc-agent-wallet
Production-grade MPC wallet SDK for AI agents. 2-of-3 threshold signatures, multi-chain (EVM + Solana), ERC-4337 smart accounts. Secure key management without single points of failure. TypeScript & Python SDKs with Rust core.
It implements a configurable policy engine enforcing rules like spending limits, address whitelists/blacklists, and time bounds on transactions. Key shares are encrypted at rest using ChaCha20-Poly1305. The SDK integrates with a message relay service for MPC coordination and provides WebAssembly bindings for browser or Node.js environments.
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