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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 v2.1.236

Format checks for message ids and socket paths

Under the hood
Useful2 Signal3
Multi-Session

Messages between Claude Code processes must now have well-formed ids and socket addresses.

What

New validation for messages passed between Claude Code processes: an id must be cc-msg- followed by 32 hexadecimal characters, and a socket path must start with a uds:, bridge: or did: scheme. A separate check for loopback addresses was added nearby.

Evidence

^(?:uds|bridge|did):

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.236 →