Source Intelligence

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 v2.1.92 Home All releases olderv2.1.91 v2.1.94newer
Claude Code v2.1.92

Context Window Size Notification

What

A new notification appears when your context window grows large, showing approximate uncached token count and suggesting /clear.

Details
  • Triggers when uncached tokens exceed ~50,000
  • Only shows if more than a certain time has passed since session start
  • Format: ~Nk uncached ยท /clear to start fresh
  • Helps users understand when conversation context is getting expensive
Evidence

Context notification function (search for "k uncached", "/clear to start fresh")

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

See this entry in the whole of v2.1.92 →