Celesto AI launches CelestoFS, petabyte-scale durable workspaces for AI agent sandboxes
aniketmaurya · x · 2026-09-08
Celesto AI introduced CelestoFS, a petabyte-scale durable workspace filesystem (built on JuiceFS) for AI agent sandboxes.
- The problem: agents don't just run a command and vanish—they turn a fresh machine into a workspace, cloning repos, installing dependencies, downloading browser binaries, and writing logs and screenshots. A single Next.js project balloons with nodemodules, Playwright binaries, and caches; with a 10GB root disk, filling it means broken installs, confusing build errors, and tasks restarting from scratch.
- The fix: a 10GB boot disk paired with a near-unlimited JuiceFS-backed workspace that survives stop/resume with the same state—no special APIs, just normal file operations.
- The argument: files are the working memory of a task, and most sandbox products still treat storage as if agents run tiny temporary scripts.
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