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.
Regex graders explain themselves when handed an image
You'll notice
Useful2Signal1
Elsewhere
Pointing a regex grader at an image now explains what to use instead.
What's wrong with this entry?
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What
A regex grader pointed at something that resolves to an image now fails with a message naming the media type and what to do instead: use an LLM grader focused on that file, or, if you are asserting something is absent, write a text rendering of it first and match against that.
Details
The eval authoring documentation now tells authors to set allowed_tools on every case alongside timeout_seconds.
Evidence
is an image (
Strings lifted out of the shipped bundle, so the claim above can be checked against them.