Pen.dev
Pen.dev is an a16z speedrun SR005 company. Based in CA, California, United States of America. Team of 9, founded in 2025.
About Pen.dev
Summary
Pen.dev builds an agentic design canvas that lives inside a codebase, letting engineers design UI without handing off to a separate design tool or team. Agents create, refine, and iterate on layouts directly on the canvas, replacing the back-and-forth between Figma files and code editors. It connects to Cursor, Claude Code, VSCode, and OpenAI Codex through MCP, and stores designs in an open format alongside the code.
Business model
A free tier plus paid plans, with access also available through existing ChatGPT or Claude subscriptions or by adding API keys.
Go-to-market
Engineers and developers adopt it self-serve by downloading the desktop app or connecting via MCP or CLI, integrating directly into the coding tools they already use.
Facts
- Dev Tools & DevOps / AI Agents
- CA, California, United States of America
- 9
- 2025
Founders (1)
- Tom Krcha
Score every cohort against your own thesis
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