# Plannotator

Visual review and annotation tool for AI coding agent plans and code.

- Category: Developer Tools
- Pricing: Contact for pricing
- Tags: Coding Assistants, Workflow Automation
- Website: https://plannotator.ai/?via=aigregator
- Aigregator page: https://aigregator.com/tools/plannotator
- API: https://x402.aigregator.com/v1/tools/plannotator

## Overview
Plannotator is a local, browser-based review tool designed for AI coding agents to annotate and review plans before execution. The tool enables users to review agent-written code with a full diff viewer, annotate agent plans visually, and send structured feedback directly back to the agent. It works with multiple coding agents including Claude Code, OpenCode, Pi, Codex, Copilot CLI, Gemini CLI, and others. Plannotator runs locally on your machine without requiring external infrastructure or databases, with sharing functionality that compresses plans and annotations directly into URLs. The tool is free and open-source under MIT or Apache 2.0 licensing. One limitation is that it requires manual installation and integration setup, which may create friction for users unfamiliar with command-line tools or plugin ecosystems.
## Key Features
- Visual plan review interface
- Code diff viewer for agent-written code
- Plan annotation and markup tools
- URL-based sharing without infrastructure
- Local execution with no external dependencies
- Native integration with coding agents via plugins and hooks
- VS Code integration
- Support for multiple AI agents (Claude Code, OpenCode, Pi, Codex, Copilot, Gemini, Kiro, Droid, Amp)
- Feedback mechanism to send comments back to agents
- Team collaboration features

## Use Cases
- Reviewing AI-generated coding plans before agent execution
- Team collaboration on agent-generated code and plans
- Quality control and code review for autonomous coding agents
- Real-time feedback loop between humans and AI coding agents
- Parallel workflow management when multiple agents are running

## Who It Is For
- AI developers working with coding agents
- Teams using autonomous code generation tools
- Developers wanting to review and control AI agent output
- Enterprises requiring code review for AI-generated code
- DevOps and platform engineers managing AI agent workflows

## Pros
- Runs entirely locally with no external servers or databases, ensuring privacy and data security
- Free and open-source under MIT or Apache 2.0 licensing, reducing costs and allowing community contributions
- Native integration with multiple leading AI agents (Claude Code, OpenCode, Pi, Codex) through plugins and hooks
- Shareable via compressed URLs without requiring backend infrastructure or third-party services

## Cons
- Requires command-line installation and plugin setup, which may be a barrier for non-technical users
- Limited to agents that support plan mode, excluding other types of AI coding tools
- Being open-source, ongoing support and maintenance depend on community contributions rather than a dedicated company

## Alternatives
- [Cursor AI](https://aigregator.com/tools/cursor-ai)
- [Code Assist](https://aigregator.com/tools/code-assist)
- [CodeMate AI](https://aigregator.com/tools/codemate-ai)
- GitHub Copilot with Code Review features
- JetBrains AI Assistant

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Source: Aigregator — AI tools directory. https://aigregator.com/tools/plannotator