LunarFS

LunarFS is a content-addressed filesystem that provides instant, disposable copies of repositories for agent workspaces. It solves the problem of slow and resource-intensive workspace forking by using a BLAKE3 content-addressed store, copy-on-write overlays, and lazy FUSE mounts. It targets developers and engineering teams, particularly those running fleets of AI agents, in mid-market and enterprise companies. It is positioned as a lean stack that is 548x faster than git worktree, with zero bytes copied per fork and millisecond-scale mount times.

Key features

• Content-addressed store with BLAKE3 deduplication
• Copy-on-write overlays for instant forks
• Lazy FUSE mount for instant workspace mounting
• Per-path ACLs for agent isolation
• Instant teardown of workspaces
• Zero bytes copied per fork
• Millisecond-scale mount time