Flue
The First Agent Harness Framework
A headless, model-agnostic TypeScript agent-harness framework for building durable agents, workflows, skills, and channel or sandbox connectors.
Recent stories
Flue 1.0 Beta reorganizes the framework around workflows, autonomous agents, and channel connectors while keeping model-agnostic deployment. The release gives TypeScript teams a more opinionated base for durable, long-running agents.
Flue previewed a command that points at docs or SDK URLs and has the agent write a sandbox connector directly into your codebase without extra packages. Follow-on tweaks, a Python port, and Unkey deploy support show the harness is becoming a testbed for self-authored integrations.
Flue launched as a runtime-agnostic TypeScript framework for headless agents, with Claude Code-like harness behavior but no built-in GUI and most logic living in Markdown skills and AGENTS.md. Early demos show a 43-line starter that can expose an agent service, highlighting a push to separate harness logic from chat interfaces.