Descriptions:
Peter Yang sits down with Tom Krcha, CEO of Pencil, to demo one of the more striking multi-agent workflows to emerge in early 2026. Pencil is a cross-platform design tool (Windows, Linux, Mac) with plugins for VS Code, Cursor, Windsurf, and other IDE-based editors, and it integrates directly with Claude Code, Codex, and a range of third-party CLI agents.
The centerpiece of the demo is Pencil’s “swarm mode,” which lets users spawn multiple AI agents — up to six in this session — to design screens in parallel. Each agent is assigned a portion of the work and represented on screen by a named phantom cursor, making it easy to see which agent is editing what in real time. The session walks through designing a three-screen mobile travel app using Claude Opus as the underlying model, with two agents per screen. Once the designs are complete, Krcha shows how to open the .pen file inside Cursor’s visual editor — a custom extension Pencil built — and use Cursor’s composer to convert the visual frames into working React and Next.js code.
Krcha also shares that Pencil reached 100,000 users within eight weeks of its full launch. For developers and designers curious about practical multi-agent design-to-code pipelines, this video offers a concrete, reproducible walkthrough of a tool that bridges visual design and code generation in a single workflow.
📺 Source: Peter Yang · Published March 08, 2026
🏷️ Format: Interview
