Plannotator — Visual Plan & Diff Review for Agents

Practical Notes

• Setup time ~5 minutes (run the install script and restart your client if needed)
• Measurable workflow: 1 plan or diff reviewed with 3+ inline annotations
• GitHub stars + forks (verified): see Source & Thanks

Plannotator is most effective when you standardize what “approval” means:

• Require a plan diff review before implementation starts.
• Tag each annotation as: scope, risk, missing test, or unclear requirement.
• Keep a strict minimum: 3 annotations per non-trivial change.

If you combine this with a small set of repo rules (forbidden actions, review-required operations), you can turn agent work into a predictable, auditable loop.

FAQ

Q: Does it work only with Codex? A: No. The README lists integrations for multiple coding agents; Codex is one of them.

Q: How do I install it? A: Run the install script, then use the provided commands (e.g., !plannotator review in Codex).

Q: What should I review first? A: Start with plans: annotate scope/risk before the agent writes code.