You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.242,
ImprovementsSection of the release
What
The eval sandbox documentation now warns that the harness judges a run from the child process's output and files, which a shell-granted process running as you can also reach. Scores from an untrusted suite run with --allow-tools Bash, or any other grant that can execute code, should be treated as advisory unless the run had operating-system-level isolation.
Details
Text only; the sandbox itself behaves as before.
Evidence
treat scores from an untrusted suite run
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Read from
Names in the bundle--allow-tools Bash
Since it was published
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added sinceA small documentation edit on Test plugins with evals touched a line naming --allow-tools after this was published.The allowlist is the read-only tools the case lists in `allowed_tools`, from `Read`, `Glob`, `Grep`, `NotebookRead`, `Skill`, `Agent`, `TodoWrite`, and the task tools `TaskCreate`, `TaskGet`, `TaskList`, `TaskUpdate`, and `TaskStop`, plus …plugin-evalssee the edit
Confirmed sinceAnthropic's documentation has since written up --allow-tools, on Plugins reference.The optional `target` is a plugin directory, a single `prompt.md` or `case.yaml` file, an installed plugin as `name` or `name@marketplace`, or `name@skills-dir`, and defaults to the current directory. Put it before `--tag`, `--allow-tools`…plugins-referencesee the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up --allow-tools, on Plugins reference.