What is lucid-agents?

Lucid Agents is a TypeScript toolkit for building AI agents that can charge for their services and transact with each other, essentially a commerce layer for AI software. The problem it solves is that AI agents today usually need custom code to handle payments, identity verification, or communication with other agents. This SDK gives developers those pieces as drop-in modules so they can focus on the agent's actual logic. The way it works is through a layered architecture: a core protocol-agnostic runtime handles the agent's behavior, while optional extensions add specific capabilities. The payments extension handles incoming and outgoing money using payment standards like x402 and USDC on blockchain networks including Base and Solana. The identity extension registers the agent on-chain so other agents can trust who they're dealing with. The A2A extension lets agents discover and call other agents, enabling marketplaces where agents buy and sell services from each other. A CLI scaffolding tool lets developers generate a working agent project in minutes. You would use this when building a paid AI service (the agent charges per request), a multi-agent marketplace, or any system where autonomous software needs to move money or prove its identity. The stack is TypeScript, with adapters for Hono, Express, Next.js, and TanStack. The runtime uses Bun or Node.js.