Plannotator
Plannotator is an AI-powered visual annotation tool that allows developers to review, mark up and collaborate on Claude Code plans through an interactive UI with features for sharing and providing feedback.
https://github.com/backnotprop/plannotator?ref=producthunt
Product Information
Updated:Jan 4, 2026
What is Plannotator
Plannotator is a specialized software platform designed to enhance the code planning process when working with Claude Code. It serves as an intermediary tool that intercepts Claude's ExitPlanMode to provide developers with a visual interface for reviewing and refining implementation plans. The platform integrates seamlessly with Claude Code through a plugin system and offers both web browser and command line interfaces for different usage scenarios.
Key Features of Plannotator
Plannotator is an interactive tool designed to enhance code planning and review processes by providing a visual interface for annotating and refining Claude Code plans. It seamlessly integrates with Claude Code's plan mode, allowing users to mark up plans, collaborate with team members, and provide direct feedback through a browser-based UI. The tool enables visual annotations, plan sharing, and automated integration with Claude's planning workflow.
Visual Plan Annotation: Interactive UI that allows users to visually mark up, annotate, and refine code plans with features like text selection, deletion marking, and comment insertion
Team Collaboration: URL-based sharing functionality that enables team members to collaborate on plan reviews without requiring server storage
Claude Code Integration: Seamless integration with Claude Code's plan mode through a hook system that intercepts ExitPlanMode for plan review and feedback
Markdown Rendering: Built-in support for markdown rendering with syntax highlighting and inline formatting for better plan readability
Use Cases of Plannotator
Software Development Teams: Development teams can collaboratively review and refine AI-generated code plans before implementation
Code Review Processes: Reviewers can provide visual feedback and annotations on proposed code changes and architectural plans
AI-Assisted Programming: Developers working with Claude Code can better control and refine AI-generated solutions through visual plan reviews
Pros
Easy installation and integration with Claude Code
Browser-based interface requiring no server storage
Real-time collaboration capabilities through URL sharing
Cons
Requires Claude Code to function
Limited to plan review use cases
Relatively new tool with potential stability issues
How to Use Plannotator
Install Plannotator Command Line Tool: For macOS/Linux/WSL users, run: 'curl -fsSL https://plannotator.ai/install.sh | bash'. For Windows PowerShell users, run: 'irm https://plannotator.ai/install.ps1 | iex'
Install Plannotator Plugin in Claude Code: Run these commands in Claude Code: '/plugin marketplace add backnotprop/plannotator' followed by '/plugin install plannotator@plannotator'. Important: Restart Claude Code after installation
Use with Claude Code Plan Mode: When Claude Code enters Plan Mode and calls ExitPlanMode, Plannotator will automatically intercept and open its UI in your browser
Review and Annotate Plan: Use the Plannotator UI to visually review and add annotations to the plan generated by Claude Code
Take Action on Plan: Choose to either 'Approve' the plan (allowing Claude to proceed with implementation) or 'Request Changes' (which will send your annotations back to Claude for revision)
Collaborate with Team: Share the annotated plans with your team members for collaborative review and feedback using Plannotator's sharing features
Plannotator FAQs
Plannotator is an interactive tool that allows users to annotate and review Claude Code plans visually, share them with teams, and provide feedback with one click. It integrates with Claude Code's plan mode.
Plannotator Video
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