Engineering Blog · Mountable

Notes on persistent filesystems for ephemeral agent sandboxes.

Architecture deep dives, sandbox mounting benchmarks, POSIX/FUSE contract notes, and release updates from the Mountable team.

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2026-10-173 min readJiří Puc (Founder, WriteIt.ai)

Give Your Agent Sandbox a Folder, Not Your Storage Keys

How to give disposable Linux sandboxes a persistent directory—without copying tarballs on every run or putting storage keys inside an untrusted container.

architecture
sandboxes
security
fuse

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