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Sweep 02 Oct 2026 · 18:55Z Build v2.1.288 509 read Stable v2.1.285 Latest v2.1.287 Next v2.1.288 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.287 ·

Skill proposals now fail with a retry message when they cannot be checked

In some cases the propose_skills tool now returns an error asking to try once more if it cannot check a proposal

You'll notice Improvements
JSON All of v2.1.287
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SkillsArea: what it touches
ImprovementsKind: in v2.1.287,
ImprovementsSection of the release
What

In a certain mode, the propose_skills tool now runs an extra check on each proposal. If that check cannot compare the proposal with your existing skills, the tool stops with an error saying so and asks the model to call it again once. Before this change, a failed check with nothing refused let the proposal through.

In the same mode, the tool also skips its check that each skill has been read recently.

Why

This changes how skill proposals are checked: when a proposal cannot be verified, it is now refused instead of accepted.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat turns this mode on is not known.

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