Ephemeral Sandbox is open-source agent-sandbox infrastructure for teams running multiple coding agents safely against one codebase. Instead of giving every agent access to the same writable checkout, it creates a private copy-on-write workspace session for each agent over a shared, immutable LayerStack. Commands run inside a holder-owned Linux namespace, so the session's filesystem and process boundary persist across operations. When work is ready, Ephemeral Sandbox compares the session with the latest shared head, resolves changes path by path, and publishes one atomic layer, or publishes nothing if the change set cannot be accepted. Operators can inspect commands, file activity, resource use, and line provenance through dedicated CLI, MCP, and observability interfaces. The system is designed for local and Docker-backed multi-agent workflows that need parallel execution with isolation, auditability, and a defined promotion path.
What's new in 0.1.4
What's Changed - Link the production website from the repository by @yifanxuaaa in https://github.com/Ephemeral-AI-Lab/ephemeral-sandbox/pull/2 - Relicense the project under MIT by @yifanxuaaa in https://github.com/Ephemeral-AI-Lab/ephemeral-sandbox/pull/3 New Contributors - @yifanxuaaa made their first contribution in https://github.com/Ephemeral-AI-Lab/ephemeral-sandbox/pull/2
Yes. Ephemeral Sandbox is free and open-source software released under the MIT license.
What is the latest version of Ephemeral Sandbox?
The latest version is 0.1.4, released on Jul 30, 2026.
Is it safe to download Ephemeral Sandbox?
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 9f2327578c186897578f0d502893d894aed52be27306f43f75afa3205eba9fdb.
Which Windows versions does Ephemeral Sandbox support?
Ephemeral Sandbox runs on Windows and is available for 64-bit (x64) systems.
How do I uninstall Ephemeral Sandbox?
Open Settings › Apps › Installed apps, find Ephemeral Sandbox and select Uninstall. From the command line, run winget uninstall --id=Ephemeral-AI-Lab.EphemeralSandbox -e.
Is there a portable version of Ephemeral Sandbox?
Yes. Ephemeral Sandbox is available as a portable ZIP archive (ephemeral-sandbox-windows-amd64.zip, 64-bit (x64)) that runs without installation. Copy it to any folder or USB drive and run it from there.
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