Atlassian's DESIGN.md is Here: What We Learned Testing Portable Design Context in Practice (9 minute read) (opens in new tab)

Google's DESIGN.md format — an open-source Markdown file that gives AI agents portable brand and UI context — can meaningfully reduce "slop" in generated interfaces, as Atlassian confirmed during a live keynote demo. However, compared to Atlassian's own MCP server and agent skills, DESIGN.md consumed roughly 92% more tokens and produced greater output variance in production tests. The format shines for quick prototyping, customer theming, and design tool interoperability, but falls short as a...