Withastro/flue: The sandbox agent framework (github.com)

Flue, the innovative Agent Harness Framework, has been announced as a TypeScript-based platform for creating headless AI agents designed to operate autonomously without human intervention. This framework allows developers familiar with systems like Claude Code to build agents that interact and solve tasks using minimal code, primarily relying on Markdown for logic and skills. Flue provides a runtime-agnostic environment that facilitates deployment across various platforms, including Node.js and CI/CD environments, enabling developers to efficiently scale agent usage. The significance of Flue lies in its streamlined approach to agent development, offering virtual sandboxes that enhance performance by eliminating the resource-intensive process of initializing full containers for every agent deployment. This architecture not only reduces costs and boosts scalability but also simplifies the interaction model, allowing agents to maintain session data and access knowledge bases efficiently. With features such as third-party connectors, session persistence, and role-based instructions, Flue stands to revolutionize the way AI agents are built and utilized in various applications, making high-scale implementations more accessible for developers.