Create PRD

Create a formal Product Requirements Document that captures what was discussed and what needs to be built. A PRD bridges conversation and implementation — it's the single source of truth for what the product or feature should do.

When to Use

• After a long discussion about a feature (user says "write this up" or "create a PRD")
• Before starting a major implementation effort
• When the user wants to align stakeholders or get sign-off
• As input to prd-to-tasks for task breakdown
• To capture decisions made during grill-me sessions

When NOT to Use

• For technical design specs (use SPEC.md from project-files)
• For documenting already-built features (use CHANGELOG.md)
• For small, self-contained tasks with no ambiguity
• When the user just wants a quick summary (give a summary, not a PRD)

Prerequisites

• Recent conversation context or notes from a grill-me session
• Understanding of the problem space
• Access to relevant codebase for context (if applicable)

PRD Format

Use this exact template. Fill in all sections that apply. Delete sections that don't.

markdown
# PRD: [Feature/Product Name]

**Status:** Draft | Review | Approved
**Created:** YYYY-MM-DD
**Author:** AI Agent (from discussion with [user])
**Version:** 1.0

---

## Executive Summary

2-3 sentences. What are we building and why? Anyone should understand this.

---

## Problem Statement

What problem does this solve? Who has this problem? How do they solve it today
(if at all)? Include specific pain points.

---

## Goals

- **Goal 1:** What we WILL achieve
- **Goal 2:** ...

---

## Non-Goals

- **Non-Goal 1:** What we explicitly will NOT do (scope boundaries)
- **Non-Goal 2:** ...

---

## User Stories

Format: "As a [user type], I want to [action] so that [benefit]."

### Must Have (P0)

- As a [user], I want to [action] so that [benefit].
- As a [user], I want to [action] so that [benefit].

### Should Have (P1)

- As a [user], I want to [action] so that [benefit].

### Nice to Have (P2)

- As a [user], I want to [action] so that [benefit].

---

## Functional Requirements

### FR-1: [Feature Area]
- System must [behavior]
- System must [behavior]
- Edge case: [what happens when...]

### FR-2: [Feature Area]
- ...

---

## Non-Functional Requirements

| Category       | Requirement                              | Target         |
|----------------|------------------------------------------|-----------------|
| Performance    | [e.g., API response time]                | < 200ms p95     |
| Security       | [e.g., auth mechanism]                   | JWT + HTTPS     |
| Accessibility  | [e.g., WCAG level]                       | AA              |
| Reliability    | [e.g., uptime]                           | 99.9%           |
| Scalability    | [e.g., concurrent users]                 | 1000 CCU        |

---

## Constraints

- **Technical:** Must use [stack/technology]. Must integrate with [system].
- **Timeline:** Needs to ship by [date] or fits into [release].
- **Budget:** [If applicable]
- **Team:** [If known]

---

## Dependencies

- **External:** [Third-party API, service, library]
- **Internal:** [Other team, module, or feature that must be ready first]

---

## Open Questions

- [ ] Question 1 — who can answer this?
- [ ] Question 2 — must resolve before implementation starts
- [ ] Question 3 — can defer to later phase

---

## Success Metrics

How will we know this is successful?

- **Metric 1:** [e.g., 80% of users complete onboarding]
- **Metric 2:** [e.g., support tickets for auth drop by 50%]
- **Metric 3:** [e.g., page load time under 1.5s]

---

## Risks & Mitigations

| Risk                                    | Impact | Likelihood | Mitigation                         |
|-----------------------------------------|--------|------------|------------------------------------|
| [What could go wrong]                   | High   | Medium     | [How we'll prevent or handle it]   |
| [What could go wrong]                   | Medium | Low        | [How we'll prevent or handle it]   |

---

## Appendix

### References
- [Link to design mockup]
- [Link to technical spec]
- [Link to relevant discussion/issue]

### Glossary
- **Term:** Definition

Workflow

1. Gather Context

Review the recent conversation. Identify:

• What problem is being solved?
• What did the user explicitly ask for?
• What constraints or preferences did they mention?
• What did they explicitly say NOT to do?

If context is thin, use grill-me to fill gaps before creating the PRD.

2. Draft the PRD

Write the PRD following the template above. Prioritize:

1. Executive Summary + Problem Statement — Most important for alignment
2. Goals + Non-Goals — Scope boundaries prevent scope creep
3. User Stories — The core of what we're building
4. Functional Requirements — Derived from user stories
5. Everything else as applicable

3. Fill Gaps with Sensible Defaults

For sections the user hasn't addressed, apply reasonable defaults and mark them clearly:

markdown
## Non-Functional Requirements

_Not discussed. Assuming standard web app defaults:_

| Category    | Requirement          | Target     |
|-------------|----------------------|------------|
| Performance | API response time    | < 500ms    |
| Security    | Authentication       | JWT        |

4. Mark Open Questions

Any assumption that might be wrong goes in Open Questions:

markdown
## Open Questions

- [ ] Should this support offline mode? (assumed NO)
- [ ] Preferred auth provider? (assumed custom JWT)

5. Present for Review

Present the PRD and ask the user to review:

Here's the PRD for [feature]. Key decisions:

- [Decision 1]
- [Decision 2]
- [Decision 3]

Open questions I still have:

- [Question 1]
- [Question 2]

Does this look right? Anything to add or change?

6. Iterate

Update the PRD based on feedback. Increment version on each significant revision.

File Naming

Write the PRD to a file named after the feature:

bash
# In the project root or docs/ directory:
PRD-<feature-name>.md

# Examples:
PRD-user-authentication.md
PRD-search-functionality.md
PRD-admin-dashboard.md

If using project-files, the PRD can live alongside PLAN.md, SPEC.md, etc.

Integration with Other Skills

From grill-me → PRD

grill-me session clarifies requirements →
  create-prd codifies them into a formal document →
    prd-to-tasks breaks them into implementation tasks →
      implement-tasks executes

To prd-to-tasks

The PRD is the input to prd-to-tasks. Every user story and functional requirement in the PRD maps to one or more tasks.

To mixture-of-experts

Share the PRD with MoE experts for architecture, security, and performance review:

bash
PRD_CONTENT=$(cat PRD-feature.md)
pi -p "Review this PRD for completeness, risks, and missing requirements:\n\n$PRD_CONTENT" \
   --system-prompt "You are a senior product manager..."

Examples

Minimal PRD (for small features)

markdown
# PRD: Add Dark Mode

**Status:** Draft | **Created:** 2026-04-27 | **Version:** 1.0

## Executive Summary
Add a dark mode toggle to the application. Users have requested this for
reduced eye strain during night use.

## Problem Statement
The app currently only supports light mode. Users working in low-light
environments report eye strain. Competitor apps all support dark mode.

## Goals
- Add dark mode toggle in user settings
- Respect OS-level color scheme preference
- Cover all existing screens and components

## Non-Goals
- Custom theme builder (just light/dark)
- Per-component color overrides
- Scheduled theme switching

## User Stories

### Must Have (P0)
- As a user, I want to toggle between light and dark mode so that I can
  reduce eye strain in low-light environments.
- As a user, I want the app to follow my OS color scheme by default so
  that I don't need to configure it manually.

### Nice to Have (P2)
- As a user, I want my preference to persist across sessions so that
  I don't need to re-set it.

## Functional Requirements

### FR-1: Theme Toggle
- System must provide a toggle in the settings menu
- System must apply the selected theme immediately across all screens
- System must persist the user's choice to localStorage

### FR-2: OS Preference Detection
- System must detect `prefers-color-scheme` on first visit
- If user hasn't set a preference, default to OS preference

## Open Questions
- [ ] Should we animate the theme transition? (leaning: yes, 300ms ease)

Full PRD (for major features)

See the template above — fill all sections for features with significant scope.

Edge Cases

No Prior Discussion

If asked to create a PRD with no context:

I don't have enough context to create a meaningful PRD.
Let me ask a few questions first (using grill-me):

1. What's the problem we're solving?
2. Who is the target user?
3. What's the scope — MVP or full feature?

Then I'll draft the PRD.

Conflicting Requirements

If the user mentions conflicting requirements, flag them:

markdown
## Open Questions

- [ ] **CONFLICT:** User wants both "instant load" and "real-time data from slow
  external API." These conflict — which takes priority? Options:
  A) Show cached data instantly, refresh in background
  B) Show loading state, always show fresh data

Feature Creep During Discussion

Keep non-goals tight:

markdown
## Non-Goals
- ❌ User suggested "also add X while we're at it" — deferred to v2.
- ❌ Integration with Y service — separate PRD if needed later.

Best Practices

• Keep the executive summary short — If your mom can't understand it, it's too complex
• User stories drive everything — Requirements derive from stories, not the reverse
• Non-goals are as important as goals — They prevent scope creep
• Mark assumptions — Everything you weren't explicitly told is an assumption
• One PRD per feature — Don't combine unrelated features
• Version the PRD — Increment on significant changes so readers know if they're stale
• Link to related docs — SPEC.md, PLAN.md, design mockups, relevant issues