Pencil

Pencil: Design on Canvas, Land in Code

Overview

Pencil is a revolutionary agent-driven MCP (Model Context Protocol) canvas built for modern development workflows. It allows developers and designers to work on a shared vector canvas that lives directly within the codebase. By integrating the design environment into the IDE, Pencil eliminates the friction of design handoffs and ensures that the code remains the single source of truth.

Key Features

• Infinite Design Canvas: Work with pixel-perfect precision inside your IDE. Code and design are always just a tab away.
• Vibe Designing: Use AI prompts to generate entire screens or specific UI elements. This agent-driven approach allows for rapid iteration and high-quality output.
• Design as Code: Since design files are stored in your repository, you can use Git to version, branch, and merge designs just like code.
• Open File Format: Pencil uses a non-proprietary format, ensuring no vendor lock-in and allowing you to extend design files with your own tools.
• Figma Compatibility: Easily transition from Figma by copying and pasting vectors, text, and styles directly into Pencil.
• Bi-directional MCP: Unlike other tools, Pencil provides full read and write access to the canvas for AI agents, enabling complex integrations with APIs, databases, and other agents.

Use Cases

• Rapid UI Prototyping: Quickly turn ideas into functional UI components using AI-assisted design.
• Collaborative Development: Bridge the gap between design and engineering by keeping both in the same repository.
• Automated Design Systems: Build and maintain component libraries that are directly linked to production code.

FAQ

• What is an MCP canvas? MCP stands for Model Context Protocol. Pencil uses it to allow AI agents to interact with and modify the design canvas directly.
• Can I use my own design system? Yes, you can plug in your team's existing design system or use Pencil's curated design kits.
• What code frameworks are supported? Pencil currently supports generating production-ready HTML, CSS, and React code.
• Is my data locked into Pencil? No, Pencil uses an open file format that lives in your own repository, giving you full control over your design data.