How to give each user their own AI agent environment - no infra needed

If you're building an AI agent, you've probably hit this wall: User A needs their own files. User B needs their own database. User C needs their own compute. And none of them should see each other's data. So you start building. S3 for storage. A database per user. Docker containers. Isolation logic. Scaling. Pause/resume when users go idle. Suddenly it's three months later and you haven't written any agent logic. I hit this exact wall building my AI coding agent (100k users). Built the infra. Took months. Then I realized every AI agent startup builds the same thing. So I turned it into a product: https://oncell.ai What you get One API call. Each user gets their own isolated environment with: File storage — read, write, list, delete. Persistent across sessions. Database — key-value store. Instant. Search — text search across all files in the environment. Shell — run any command. Live URL — {id}.cells.oncell.ai serves files from the environment. Observability — workflow journal, logs, me