The Claude Design tool exposes its system prompt via the API requests it makes. I'll give them the benefit of the doubt and assume that was intentional, and not because the app was blindly vibe coded ;-).
I've linked the prompt as of around release-time yesterday. You can verify in your own network requests.
For those of us who are implementing similar AI-products, it's an interesting opportunity to see what worked for someone else. While it may be vibe-coded, it also... works.
In this case, I was interested in how they thought about the design aesthetics, and the prompt led me to the specific "skill", which the agent was happy to spit out for me when asked...
I've linked the prompt as of around release-time yesterday. You can verify in your own network requests.
In this case, I was interested in how they thought about the design aesthetics, and the prompt led me to the specific "skill", which the agent was happy to spit out for me when asked...