What to do

  1. Upgrade from 0.74.0 or earlier, since those binaries carry the 18 Go vulnerabilities (agnostic-ai upgrade, or bump the npm pin).
  2. If Claude Code is a target and gitignore.enabled is on, commit the .worktreeinclude the next sync writes (one file).
  3. If you commit CLAUDE.md and another target writes AGENTS.md, commit the shorter CLAUDE.md the next sync writes (one file).

Nothing else needs action.

What changed

  • The root CLAUDE.md becomes @AGENTS.md plus your ::target claude blocks when another target writes AGENTS.md, so Cursor stops loading the instructions twice (#1423).
  • gitignore.commit: [cursor:reviews, cursor:environments] keeps only the Cursor files a cloud agent reads in Git, while local tools regenerate theirs (#1418).
  • sync --check --against fails on a hand-written skill left in an ignored folder by a branch older than your move to .agnostic-ai/, and names the import that adopts it (#1420).

Full details are in the GitHub release notes.

Upstream CLI and model news

  • Amp (chronicle 2026-09-28): Claude Opus 5.5 now powers Amp's medium mode. It is a model choice inside Amp, with nothing to configure here. State: watch. Amp chronicle