DESIGN.md vs. MCP: Which One Your Agent Actually Needs

21 Sept 2026 · 41 min
40:31

In this episode of the Intentioncraft podcast, host Billy interviews Tim Greenmore, development lead at Headway, about Google’s DesignMD specification and its relationship to Model Context Packages (MCPs). Tim explains that DesignMD is a simple, portable YAML file that aggregates design‑system context—tokens, guidelines, and optional component definitions—so that AI agents can reference it across projects. They discuss a pragmatic, token‑first adoption strategy, noting that teams can start with essential colors, spacing, and typography and expand as value is demonstrated. The conversation contrasts DesignMD’s design‑focused orientation with MCPs’ development‑focused orientation, showing how the two can complement each other: DesignMD serves as a single source of truth that feeds MCPs, reducing tooling overhead. Governance, contribution, and community practices are explored, emphasizing public communication channels, shared Slack/Teams spaces, clear contribution steps, and public recognition to encourage adoption. Real‑world use cases are highlighted, from internal slide‑deck and newsletter generation to low‑code teams lacking design or development resources. They also touch on tooling—linting, CI validation, and extensions like multi‑theme support—and reflect on Atlassian’s test results, expressing cautious optimism while acknowledging the fast‑moving landscape where future models might supersede the need for DesignMD. The episode concludes with practical advice for teams starting with DesignMD: read the spec, begin with tokens, use the provided tooling, and iterate.

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