# How to Use the PRD Skill to Generate Detailed Requirements Documents in Ralph

> Learn how to use the PRD skill in Ralph to generate detailed requirements documents quickly. Invoke the skill, answer questions, and retrieve your PRD from tasks/prd-[feature-name].md.

- Repository: [Ryan Carson/ralph](https://github.com/snarktank/ralph)
- Tags: how-to-guide
- Published: 2026-04-13

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**To use the PRD skill in Ralph, invoke it with a feature description, answer 3–5 lettered clarifying questions, and retrieve the generated document from `tasks/prd-[feature-name].md` to feed into the autonomous development loop.**

The PRD skill is a built-in, user-invocable component of the snarktank/ralph repository designed to automate the creation of comprehensive Product Requirements Documents. Defined in [`skills/prd/SKILL.md`](https://github.com/snarktank/ralph/blob/main/skills/prd/SKILL.md), this skill bridges the gap between vague feature ideas and structured implementation plans that Ralph