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Use read-only mounts when a sandbox needs files but should not write to them. There are two read-only modes:
  • Pinned: resolves a branch, tag, or commit once and never changes.
  • Following: tracks a branch and refreshes as that branch moves.

Pinned Read-only Mount

A pinned mount is best for reproducible builds, evals, benchmarks, and released assets.
Use a commit hash when the input must stay fixed for the lifetime of the sandbox.

Following Read-only Mount

A following mount is best for shared skills, prompts, docs, configs, and dependencies.
When main moves, Tensorlake refreshes only the paths that changed. Unchanged files keep their warm cache. For a complete asset distribution workflow, see Distribute Files to Agents.

Choosing Between Them