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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.

← All of v2.1.251 Home All releases ←olderv2.1.250
Claude Code v2.1.251

SessionStart hooks can see the resumed conversation

Use it now
Useful3 Signal3
Hooks Notable

SessionStart hooks can now see the messages carried over from a resumed session.

SessionStart
What

SessionStart hooks now receive the messages carried over from a resumed session, not just the bare start event, so a hook can inspect prior conversation content.

Details
  • The messages are passed in as resumedMessages and transformed before hooks run.
  • No flag controls this; the field is present whenever the resume supplies messages.
Evidence

resumedMessages: v

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 v2.1.251 →