July 8, 2026
Talk now, doodles later
Show HN: Agent Draw: An agent draws while you talk, built on TLDraw
This AI doodles your presentation live, and commenters are already calling it a classroom game-changer
TLDR: Agent Draw is a new tool that lets an AI fill in drawings on a shared whiteboard while you keep presenting, turning live explanations into instant visuals. Commenters were largely thrilled, especially about teaching and brainstorming, with the only real caution being that it can feel a little strange before it clicks.
An online coding demo about an AI that draws while you talk has sparked the kind of reaction every maker dreams of: part amazed, part playful, and very much “wait, I want this now.” The project, called Agent Draw, lets someone drag a box on a digital whiteboard, describe what should go there, and then keep speaking while the AI fills it in. In plain English: it’s like having a very eager sketch assistant who never asks you to repeat yourself.
The community vibe was overwhelmingly excited, with commenters instantly leaping from “cool demo” to big-picture uses. One person imagined making an RSA-style explainer video, the kind where drawings appear as ideas are being explained, which is basically the internet’s favorite “this could be huge” compliment. Another tested it for mind maps and said watching branches grow in real time felt like a new way to think with AI, which is a fancy way of saying people found it weirdly mesmerizing. Education got the loudest applause: one commenter said they would have loved this while tutoring in grad school, and that’s the sort of practical praise that hits harder than hype.
As for drama? This thread was light on doom and heavy on delight, though one subtle hot take did sneak through: yes, it’s powerful, but you may need to learn its rhythm first. That little note kept the conversation grounded. And then there was the pure internet energy of “Steve is a treasure <3,” which turned the whole thread into a mini fan club. In other words, the real story here isn’t just that AI can draw a cricket player or a chemistry diagram. It’s that commenters immediately saw a future of smarter teaching, better brainstorming, and presentations that might finally stop being boring.
Key Points
- •Agent Draw is a tool built on tldraw that lets an AI agent draw inside user-defined regions on a canvas while the user continues presenting.
- •The project originated from research done after building 2draw, a shared-canvas drawing and guessing game on tldraw.
- •Agent Draw was built on top of tldraw’s official Agent starter kit, which includes a chat-based interface and a Cloudflare Worker backend.
- •The article compares model performance and says Claude Opus 4.8 produced stronger diagram and sketch outputs than Claude Haiku 4.5 and Gemini 2.5 Flash-Lite.
- •The implementation includes a new canvas tool, speech pipeline, serialized draw queue, and a state-machine-based area capture flow using tldraw’s StateNode system.