Plannotator
Plan and code review for your AI coding agents — annotate the plan before it runs, diff the code after.
Key facts: Plannotator launched on Hacker News on November 8, 2026. It is plan and code review for AI coding agents: annotate your agent's plans before they run, review agent-written code with a full diff viewer, and share with your team, with your feedback going straight back to the agent. It runs locally, so review data stays on your machine by default, with no usage telemetry or analytics. The new Inbox gathers your agents' questions, plans and reviews in one local window. It integrates with Amp, Claude Code, Codex, Copilot, Droid, Gemini, Kiro, OpenCode, Pi and VS Code, with hooks where supported and slash commands where they fit.
Plans: Free and open source. Run it locally with a one-line install; no account, no telemetry.
Best for: Developers whose agents write plans and code faster than they can review them. Who should skip it: anyone who codes alone without an agent, or who reviews everything in the terminal already.
Pros
- Free and open source, runs locally
- Review the plan before the agent runs it
- Full diff viewer for agent-written code
- Works with Claude Code, Codex, Copilot, Gemini, Kiro and more
Watch out for
- Local-first means your team needs the same setup to share reviews
- It reviews the work; it cannot stop a bad plan you approve
- A launch-week tool, so integrations are still maturing
Best for
Developers whose agents write plans and code faster than they can review them. Who should skip it: anyone who codes alone without an agent, or someone who reviews everything in the terminal already.
Pricing
Free and open source. One-line install, runs locally, no account, no telemetry.
FAQs
What is Plannotator? Plan and code review for AI coding agents: annotate the plan before it runs, review the code in a full diff viewer, and send feedback straight back to the agent.
Is Plannotator free? Yes. It is free and open source, runs locally, with no account and no usage telemetry.
Which agents does it work with? Amp, Claude Code, Codex, Copilot, Droid, Gemini, Kiro, OpenCode, Pi and VS Code.
What is the Inbox? A local window that gathers your agents' questions, plans and reviews in one place.
Try it on the official website — pricing and availability are confirmed there.
Visit Plannotator→