Flue is a TypeScript framework for building the next generation of agents

Agent = Model + Harness

It's the architecture that makes coding agents like Claude Code and Codex so powerful. They can plan, gather context, write files, spawn subagents, adopt roles, and problem-solve. These agents are more than just chatbots. Why isnt every agent built like this?

Flue is a framework for the next generation of agents. Flue's programmable agent harness is able to represent any autonomous agent or workflow, from simple chatbots to entire coding platforms. Connect your favorite remote sandbox, or use our built-in zero-config virtual sandbox to give your agent a place to work through any task.

When you're ready to ship, Flue bundles your agents into an HTTP server that you can deploy anywhere. Or skip the server and run your agents right from the CLI, perfect for local tasks and CI.