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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.

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Claude Code v2.1.248 27 Aug 2026

Callbacks can wait on plugin installation finishing

Under the hood

Useful1 Signal1

Plugins

Code can now wait for plugin installation to finish before running.

What

Code that depends on plugins being installed can now register a callback that fires once when installation resolves, or immediately if it already has.

Evidence

onSettled

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

See this entry in the whole of v2.1.248 →