What
The Bash tool runs shell commands for Claude. Some commands run in a sandbox, a restricted area that limits what the command can touch. When a sandboxed command fails, or when the sandbox records a violation (the command tried to do something it was not allowed to), the tool now sends a note with the key "sandboxed_failure" and a violationRecorded value to the remote caller. Commands that were interrupted are not reported.
Why
Whatever is driving Claude Code from the other end now learns that a sandboxed command failed, and whether the sandbox caught a violation, instead of only seeing the command's output.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say who the remote caller is or what it does with the note.