Week of April 10, 2026

<Tip> **Released this week:** [v0.3.11](https://github.com/superradcompany/microsandbox/releases/tag/v0.3.11) · [v0.3.12](https://github.com/superradcompany/microsandbox/releases/tag/v0.3.12) </Tip>

New features

• File-level volume mounts. Mounts now target individual files, not just directories. See Sandbox volumes.
• fs.readStream in the TypeScript SDK. Async-iterable file reads instead of buffering whole files in memory.
• sandbox.metricsStream() in the TypeScript SDK. Async iterable of CPU, memory, and I/O samples, mirroring the Rust SDK.
• msb shell removed. Use msb exec --tty <sandbox> -- bash instead.

Bug fixes

• The network proxy now recomputes Content-Length after substituting secrets into request bodies.
• msb run execution options (env, cwd, signal handling) only apply when --tty is set.
• Extended attributes on symlinks and listxattr initialization now match the underlying VFS.