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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.236 ·

Plugin eval cases must have a prompt, and unfilled templates are rejected

Plugin eval cases now must include a prompt, and untouched init placeholders are rejected.

Use it now No documentation found Improvements
JSON All of v2.1.236
Use it nowTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Plugin EvalsArea: what it touches
ImprovementsKind: in v2.1.236,
What probably matters to youSection of the release
What

A plugin eval case that supplies only a session history file is now refused; you need execution.prompt in case.yaml or a prompt.md body. A case or grader still containing the placeholder line written by init is refused with an error explaining that.

Details
  • Directory scanning for cases was rewritten, and paths written inside a case are now resolved with a check that they do not escape the case folder.
Evidence

execution.prompt is required (a prompt.md body, or execution.prompt in case.yaml)

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

Read from
Names in the bundleexecution.promptcase.yamlprompt.md
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.

Confirmed since Anthropic's documentation has since written up prompt.md, 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-reference see the edit
Confirmed since Anthropic's documentation has since written up case.yaml, 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-reference see 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 case.yaml, on Plugins reference.

See this entry in the whole of v2.1.236 →

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