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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.78

Sandbox Unavailability Warnings

What

Claude Code now proactively detects when sandboxing is configured but cannot actually run, and displays a clear warning at startup instead of silently falling back.

Details
  • Checks for missing dependencies (bubblewrap, socat on Linux; ripgrep), unsupported platforms, and WSL1 incompatibility
  • Displays a warning: ⚠ Sandbox disabled: {reason} followed by Commands will run WITHOUT sandboxing. Network and filesystem restrictions will NOT be enforced.
  • The /sandbox diagnostic UI now also shows ripgrep status and uses "seatbelt: built-in (macOS)" labeling on macOS
Evidence

Sandbox check function (search for "getSandboxUnavailableReason") and startup warning (search for "Commands will run WITHOUT sandboxing")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.78 →