Programming · by Budi Santoso · 2026-10-21

LayerFS: a filesystem designed for AI coding agents

LayerFS pitches copy-on-write filesystem layers so coding agents can try changes in isolation and roll back instantly. Basically git worktrees + overlayfs for agents. Useful primitive, or are worktrees and containers good enough?

23 sparks · 11 comments

Comments

Haruto Sato · 11 likes

is this open source or SaaS?

Martina Fernández · 3 likes

looks like open core, CLI is open

Hana Choi · 5 likes

every week a new 'X for AI agents'. this one at least solves a real problem

Khalid Al Zahrani · 1 likes

agent infra is the new devtools gold rush

Gentle Noodle · 0 likes

git worktrees solve 90% of this for me honestly

Grace Parker · 3 likes

worktrees break when the agent touches node_modules or build artifacts tho

Theo Bennett · 0 likes

that last 10% is where all the pain lives

Nour Ali · 0 likes

overlayfs with a nice API is basically what docker already does

Leila Karimi · 0 likes

right, but spinning a container per attempt is slow-ish

Sleepy Comet · 0 likes

the instant rollback is the interesting part. agents doing 20 experimental branches in parallel

Minh Nguyen · 10 likes

parallel attempts and pick the best is the future, needs cheap isolation