AI Agent

Annotate

A macOS menu-bar app that gives AI agents the ability to draw directly on your screen via MCP.

What is Annotate?

Annotate is a macOS menu-bar application that allows AI agents to draw directly on the user's screen using the Model Context Protocol (MCP). It provides a set of annotation tools (circle, underline, highlight, arrow, text, locate) and requires accessibility permissions but no network connections.

Annotate vs Similar AI Tools

Pricing ModelFreeFree, FreemiumFreeFree
Free Credits
Key Features
  • Annotate circles for looping with labels
  • Underline phrases while keeping text readable
  • Highlight regions with marker effect
  • Multi-agent workflow with verification and self-healing
  • 50+ AI models auto-routed per agent
  • 1000+ OAuth2 app integrations
  • Seven breakable boxes covering OWASP Agentic Top-10 vulnerabilities
  • Three guided simulations for cascading failures, human-agent trust, and rogue agents
  • Network-isolated Docker containers for safe execution
  • Code-to-runtime reasoning across cloud, Git, and Kubernetes
  • Action-gate enforces read-only policy on every API call
  • Sandboxed JavaScript execution for concurrent research
Pros
  • Completely free and open-source (MIT)
  • Privacy-friendly – no network connections or screen captures
  • Replaces 10+ separate tools with one platform
  • Multi-agent orchestration saves time and context switching
  • Covers full OWASP Agentic Top-10 in a realistic manner
  • Docker isolation prevents accidental damage
  • Read-only by construction prevents accidental writes
  • Evidence-backed verification cross-checks every finding
Cons
  • macOS only (requires macOS 14+)
  • Requires accessibility permissions to read UI elements
  • Free tier limited to 5,000 credits per month
  • May have a learning curve for complex workflows
  • Requires Docker and technical setup
  • Not for production use; only for lab environments
  • Requires an LLM API key, incurring token costs
  • Limited to read-only operations, cannot remediate
Best For
  • AI developers integrating screen annotation into workflows
  • Educators creating interactive tutorials with AI agents
  • Marketing teams
  • Content creators
  • Security researchers focusing on AI agent vulnerabilities
  • Developers building MCP-based applications
  • Security engineers
  • DevOps teams

How to use Annotate?

  1. 1Download and install the latest release from GitHub.
  2. 2Tell your AI agent to install the MCP tools via the provided URL.
  3. 3Let your agent paint by using the annotate tools to learn new apps, get pointers, or find help.

Annotate Key Features

  • Annotate circles for looping with labels
  • Underline phrases while keeping text readable
  • Highlight regions with marker effect
  • Arrow tool to point at elements
  • Text tool for custom labels
  • Locate tool to get real element positions
  • Screen detection (multiple displays, scale)
  • Clear tool to erase all annotations
  • MCP server built into the app bundle

Annotate Use Cases

  • Learning new software (e.g., Blender) with visual guidance
  • Getting pointers in games (e.g., tower defence)
  • Explaining complex ideas by pointing on screen
  • AI-assisted tutorials and walkthroughs

Annotate Pricing & Free Credits

Annotate currently operates on a Free model.

This tool is completely free to use

Free

$0

Open-source tool with MIT license, free to use and modify.

Annotate Pros & Cons

Pros

  • Completely free and open-source (MIT)
  • Privacy-friendly – no network connections or screen captures
  • Easy MCP integration with popular AI tools (Claude, Cursor, etc.)
  • Deterministic drawing that can be tested offline

Cons

  • macOS only (requires macOS 14+)
  • Requires accessibility permissions to read UI elements
  • Limited to drawing and locating – no screen capturing

What is Annotate best for?

  • AI developers integrating screen annotation into workflows
  • Educators creating interactive tutorials with AI agents
  • Gamers needing visual cues from AI assistants

Annotate FAQ

Top free alternatives to Annotate

Definable AI logo

Multi-agent workflow platform that builds and runs workflows from plain English prompts, integrating 1000+ apps and 50+ AI models.

Free
100X.Bot logo

Automate repetitive browser tasks by recording screen actions or describing with chat, turning them into reusable workflows, smart tables, and custom apps.

Free
SureWire logo

SureWire is a specialized QA platform that stress-tests AI agents for safety, reliability, and compliance using purpose-built testing agents.

Free
Notte logo

Browser infrastructure platform for AI agents to run on the internet at speed with cloud browser sessions, agents, and serverless functions.

Free
Manifest logo

Manifest converts any URL into a structured JSON map of what AI agents can interact with on a page—buttons, forms, inputs, and required fields.

Free
Agentcard logo

Agentcard provides agent-friendly card issuing and payment infrastructure for AI agents, enabling 5-minute setup and autonomous purchases.

Free
YAGNI logo

Manage AI agent teams like human teams with responsibilities, numbers, commitments, and approvals across your business tools.

Free
Oodle AI logo

Oodle AI provides agent observability with fast trace search, S3-based storage, and out-of-the-box insights to detect silent failures in AI agents.

Free

Best alternatives AI Tools to Annotate

Definable AI logo

Multi-agent workflow platform that builds and runs workflows from plain English prompts, integrating 1000+ apps and 50+ AI models.

Free
mcploitable logo

A collection of deliberately vulnerable MCP servers for training in agentic security, mapped to the OWASP Top 10 for Agentic Applications.

Cynative logo

Open-source AI tool for deep infrastructure research, running frontier models across code, cloud, and runtime to deliver verified answers.

agent-manager logo

Terminal UI to manage AI coding-agent sessions (Claude Code, OpenCode, Codex, Grok Build) in tmux with live status, group tree, and diff review.

hotcell logo

Self-hostable sandbox SDK for AI agents that provides isolated environments with key management and egress control on your own hardware.

Silo logo

Open-source desktop app to manage multiple project workspaces simultaneously, keeping terminals and AI coding agents running across projects with instant switching.

Relay Studio logo

A desktop app that transforms AI coding agents into a visual Kanban build loop for feature development with human review.