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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

Resumed conversations recompute their tools and commands

You'll notice

Useful4 Signal2

Sessions

Resuming a conversation picks up your current MCP servers, commands and tools instead of stale ones.

What

When a conversation is resumed, the available tools, allowed agent types, slash commands and MCP configuration are now read fresh at that moment instead of being inherited from whatever the previous screen was holding. Changes you made to MCP servers or commands take effect on resume.

Details

API key re-verification now goes through the shared verification path with current credentials rather than a value passed down.

Evidence

computeToolPoolFresh

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 →