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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 v2.1.7

Prefetch System Context Optimization

What

System context is now prefetched more intelligently based on trust status.

Details
  • In non-interactive sessions, prefetch runs immediately
  • In interactive sessions, only prefetches if trust has been established
  • Logs prefetch status via prefetch_system_context_* telemetry events
Evidence

tR7() at line 543352 (prefetch logic, contains "prefetch_system_context")

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

See this entry in the whole of v2.1.7 →