# AgentFS with copy-on-write overlay filesystem

DevFeed: [AgentFS with copy-on-write overlay filesystem](<https://devfeed.tech/articles/agentfs-with-copy-on-write-overlay-filesystem-5884.md>)

Original publisher: [Read original article](<https://turso.tech/blog/agentfs-overlay>)

Author: Pekka Enberg

Published: 2025-12-31T00:00:00Z

Content type: article

Language: en

Sources: [Turso Blog](<https://devfeed.tech/sources/turso-blog.md>)

Topics: [AI-assisted coding](<https://devfeed.tech/topics/ai-assisted-coding.md>), [SDKs](<https://devfeed.tech/topics/sdks.md>)

Tags: [agents](<https://devfeed.tech/tags/agents.md>), [claude-code](<https://devfeed.tech/tags/claude-code.md>), [codex](<https://devfeed.tech/tags/codex.md>), [coding](<https://devfeed.tech/tags/coding.md>), [git](<https://devfeed.tech/tags/git.md>), [mount](<https://devfeed.tech/tags/mount.md>), [python](<https://devfeed.tech/tags/python.md>), [rust](<https://devfeed.tech/tags/rust.md>), [sandbox](<https://devfeed.tech/tags/sandbox.md>), [sqlite](<https://devfeed.tech/tags/sqlite.md>), [typescript](<https://devfeed.tech/tags/typescript.md>)

## AI overview

AgentFS adds a copy-on-write overlay filesystem for isolating coding agents while they work on a host repository. Changes are stored in a SQLite-backed writable layer, leaving host files intact.

## Source excerpt

AgentFS now ships copy-on-write overlay support via 'agentfs run', letting coding agents work on your repo in an isolated, SQLite-backed sandbox.