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INDEX

Cold-start any session in 30 seconds. The brain's entry point — a short, ranked summary of where the project is right now. Every CLAUDE.md instruction reads it first; every fresh agent walks in oriented.

See it in motion

Where to find it

  • Localhost: /INDEX.html?repo=<id>
  • On disk: .claude/brain/INDEX.md in every tracked repo
  • Keyboard: ⌘ K then index
  • Sidebar: Overview → INDEX

What it does for you

Walk in oriented, not lost.A two-minute read tells you what the project is, what just shipped, what's next, and which brain files matter for what you're about to do.
The next agent walks in just as oriented.Claude Code, Cursor, and Codex all read INDEX.md per the CLAUDE.md hard rule. Update INDEX → the next session inherits the update.
Bumped in the same PR as the change.When a state-of-the-project line moves, the PR that moved it edits INDEX in the same commit. The index never lags reality.

Configure

Nothing — it's a hand-curated markdown file. Bump it whenever a state-of-the-project line moves (see the end-of-session rule in CLAUDE.md).

Use it well

At session start, read INDEX + the latest sessions/ entry. That's the minimum re-orientation. At session end, bump INDEX if your PR moved a state-of-the-project line. Don't let it grow into a wall of text — keep it ranked and short.

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