Cursor 2.0: fan out 8 agents into isolated worktrees and let .cursorrules cut PR review comments ~70%

Tech Insider·medium signal

Cursor 2.0 runs up to eight agents in parallel on one prompt, each in an isolated git-worktree copy of the codebase, while a committed .cursorrules file enforcing project standards reportedly reduces PR review comments by ~70%. Composer adds a plan-then-diff-then-approve loop, and 'Automations' turns agents into always-on workers triggered by Slack/Linear/GitHub/webhook events. The practical takeaway: most of the leverage comes from encoding standards as rules (so the agent stops making the same review-bait mistakes) before scaling agent count.