Design MD

Design MD is an agent skill that automates the creation and upkeep of DESIGN.md files — the living design documentation that explains how a codebase is structured, why key decisions were made, and how components fit together. Instead of relying on engineers to remember to write and update design docs (which almost never happens once a sprint gets busy), Design MD analyzes your actual repository — file structure, module boundaries, dependency graphs, API surfaces — and drafts or refreshes a DESIGN.md that reflects the real state of the code. It's built for teams who want documentation that stays in sync with the codebase rather than a stale artifact from six months ago.

When you host Design MD through BusinessMCP.com, it becomes one capability inside your unified MCP server rather than a standalone script someone has to remember to run. Connect your repositories, docs storage, and any internal wikis once, and Design MD is exposed at your company's /api/mcp endpoint alongside every other tool, database, and revenue source you've wired in. Any AI agent — Claude, GPT, Gemini, or whatever model your team standardizes on next — can call it with the same Bearer mcph_* key, so switching model vendors never means rebuilding your documentation pipeline. Because the skill lives behind your own hosted MCP server, generated design docs, code snippets, and architectural notes never leave your infrastructure boundary in an uncontrolled way, which matters for teams operating under GDPR or other data-handling requirements.

Design MD shines in a few recurring moments: onboarding a new engineer who needs a fast, accurate mental model of an unfamiliar service; preparing for an architecture review where stakeholders expect an up-to-date DESIGN.md instead of a scramble the night before; auditing a legacy codebase to reconstruct documentation that was never written in the first place; and maintaining documentation hygiene across microservices so every repo in a monorepo or multi-repo setup has a consistent, comparable design document. Product and engineering leads also use it to generate a first draft they can then edit, rather than starting from a blank page — a meaningful time savings on any project that has quietly grown design debt.

Because BusinessMCP.com pairs every hosted skill with a business-intelligence dashboard, Design MD's activity isn't a black box. Teams can see which repositories have had documentation generated or refreshed, track how often the skill is invoked across projects, and correlate documentation coverage with other engineering signals already flowing through the same MCP server — deploy frequency, ticket volume, or codebase size, depending on what other tools you've connected. That's the core idea behind BusinessMCP: rather than bolting a documentation generator onto one AI tool and a analytics dashboard onto another, you connect your tools, databases, and ad platforms once and let every agent and every report draw from the same hosted, model-agnostic source of truth.

Design MD tags itself under documentation and design, and its Google-related tagging reflects support for teams whose design references, style guides, or supporting docs live in Google Workspace. It pairs naturally with other developer-tools skills in the catalog — changelog generators for release notes, README generators for top-level project docs, and git workflow skills for keeping documentation commits tidy — so a full documentation stack can be assembled from a handful of connected skills rather than a patchwork of disconnected scripts.