HTML is the new Markdown: How Anthropic engineers are building with Claude Code | Thariq Shihipar

HTML is emerging as a superior medium to Markdown for interacting with AI agents, offering a richer, more readable, and interactive format for project planning and technical specifications. As AI agents handle longer, more complex tasks, traditional Markdown files become unwieldy, whereas HTML allows for scrollable, visual, and functional micro-apps that enhance user engagement. Thariq Shihipar, a developer on the Claude Code team, demonstrates how this shift enables users to act as "compute allocators," making strategic decisions about where to spend resources. By generating custom HTML interfaces for brainstorming, planning, and maintaining living design systems, developers maintain better alignment with their AI agents. This approach transforms static documentation into dynamic, interactive tools that improve both the quality of the output and the efficiency of the collaboration between humans and AI.