The Cursor PRD Workflow
Cursor is the best AI coding tool available. But it works best when you give it structured context. Here's how to go from raw idea to working code with Specd + Cursor.
Why Cursor needs a PRD
Cursor is a context consumer. Give it a vague idea and it'll ask 10 clarifying questions. Give it a structured PRD and it starts building immediately. The quality of Cursor's output is directly proportional to the quality of your input.
A Specd PRD is designed specifically for this. At under 1,200 words (roughly 2,000 tokens), it fits comfortably in Cursor's context window alongside your existing codebase. The build order tells Cursor what to implement first. The file structure tells it where to put the code. The acceptance criteria tell it when a feature is done.
The 5-step Specd + Cursor workflow
Generate
Open Specd, select your app type, describe your idea, choose your stack. Get a complete PRD in 15 seconds.
Export
Click "Download Markdown" and rename the file to SPEC.md. Place it in your project root.
Reference
In Cursor chat, type @SPEC.md to give Cursor full context of what you're building.
Build
Start with: "Implement step 1 from SPEC.md." Cursor reads the build order and begins with the data layer.
Verify
After each step, ask Cursor: "Check step 1 against the acceptance criteria in SPEC.md. Is it complete?" Move to the next step only when criteria are met.
Why 1,200 words is the sweet spot
Context windows are finite. Every word of your PRD competes with your actual codebase for space in the model's working memory. A 4,000-word PRD crowds out the code context Cursor needs.
Specd's 1,200-word limit leaves roughly 90% of the context window for code, errors, and real-time state. This isn't a limitation — it's a design decision. Dense, structured context outperforms verbose, loosely-formatted context every time.
The out-of-scope advantage
Cursor will build whatever you ask for. If your PRD mentions admin dashboards, analytics, and notification systems, Cursor will try to implement all of them. Specd's out-of-scope list explicitly tells Cursor what NOT to build.
Paste this line into your Cursor chat: “Do not build any items listed under Out-of-Scope in SPEC.md.” This single instruction prevents Cursor from adding features you didn't ask for.
Works with Claude Code and Windsurf too
The same workflow applies to any AI coding tool. Paste the PRD as a first message in Claude Code. Add it to Windsurf memories. Reference it in GitHub Copilot Chat with #SPEC.md. The format is tool-agnostic because it's just structured Markdown.
Keep reading
AI PRDs with Cursor, Claude Code, and Windsurf
The full guide to using structured PRDs with AI coding tools.
ChatGPT vs Specd
ChatGPT writes what you ask for. Specd writes what you can build.
Why Schema-Validated PRDs Win
Schema-enforced constraints prevent the AI from hallucinating features.