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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 v2.1.224

Self-hosted runner hooks get the session UUID

Use it now
Useful3 Signal3
Self-Hosted Runner Notable not in their notes

Runner hooks now get CLAUDE_RUNNER_SESSION_UUID and CLAUDE_CODE_REMOTE_SESSION_UUID so your scripts can key on the session.

CLAUDE_RUNNER_SESSION_UUIDCLAUDE_CODE_REMOTE_SESSION_UUID
What

Checkout hooks, post-session hooks and the remote runner environment now export CLAUDE_RUNNER_SESSION_UUID and CLAUDE_CODE_REMOTE_SESSION_UUID, so your scripts can key on the session. Neither existed in 2.1.223.

Details
  • The value is derived from the session id by decoding its trailing segment into a canonical UUID; if that does not decode, the variables are left unset.
  • Only set on the self-hosted runner and remote session launch paths.
Evidence

CLAUDE_RUNNER_SESSION_UUID

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 v2.1.224 →