S2

Self-hosted file storage

Your data.
Your server.
Only the access you grant.

S2 stores your files on a server you run, with permissions per folder for each person, app, and AI agent.

Self-host S2 View on GitHub
API TOKENS
The API tokens page: me with access to everything, and kids, ai-agent, family and shopper, each limited to its own folders

Least privilege, by path

Decide exactly
how much to share.

Example: weekly dinners with an AI agent.

A folder tree: wishes, fridge, plan and shopping, each with the tokens that can open it (pencil: read and write, eye: read only); bank and passport are not shared
Pencil: read and write. Eye: read only.

One store, familiar tools

Connect without
giving everything away.

01

AI agents

Connect ChatGPT, Claude, or any MCP client. You approve its folders and permissions in the browser.

02

Files & scripts

WebDAV in Finder or Windows Explorer. API tokens for scripts.

03

Your software

REST API and OAuth. The same folder permissions everywhere.

Keep the keys

Run it where
your data lives.

Docker Compose and PostgreSQL. Files stay on storage you control, stored as plaintext.

Read the setup guide