Flue

TypeScript framework from the Astro team for building headless autonomous agents that deploy to Node.js, Cloudflare Workers, GitHub Actions, GitLab CI, Daytona, and Render. Each agent runs in a configurable sandbox (virtual, local, or remote container), avoiding the cost of a full container per agent at scale. Actively developed (~993 commits) with no explicit stability guarantee on the API, so pin your version.