goga-define-prd

goga-define-prd is a skill for Claude Code, Codex from qarium/goga. It costs 17 tokens per session (1,331 once invoked), scanned A, original, BSD-3-Clause.

A skill that turns an already agreed product definition into a Product Requirements Document, a written description of what a product must do. It preserves decisions about the problem, users, goals, experience, requirements, limits, scope, and success measures.

In plain words
What is it for?
Use it to produce an engineering-ready PRD after product discovery and definition are finished.
Why use it?
It prevents the final document from quietly adding new features or changing decisions that were already made. It also checks that the product definition is complete and consistent first.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to produce an engineering-ready PRD after product discovery and definition are finished.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/qarium/goga/goga-define-prd
View source ↗ qarium/goga
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add qarium/goga --skill goga-define-prd
Clone the repo
git clone --depth 1 https://github.com/qarium/goga

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for goga-define-prd

README.md
[![agentmods](https://agentmods.dev/badge/skills/qarium/goga/goga-define-prd/github.svg)](https://agentmods.dev/skills/qarium/goga/goga-define-prd)
Your own site
<a href="https://agentmods.dev/skills/qarium/goga/goga-define-prd"><img src="https://agentmods.dev/badge/skills/qarium/goga/goga-define-prd/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for goga-define-prd

Your own site · 80×15
<a href="https://agentmods.dev/skills/qarium/goga/goga-define-prd"><img src="https://agentmods.dev/badge/skills/qarium/goga/goga-define-prd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,331 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
SkillSpector: 1 finding, up to low

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • low Excessive Agency · line 49
    Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.
    Fix: Limit the skill's scope to its documented purpose. Remove instructions that enable the agent to perform actions outside its stated functionality.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00017 $0.01331
Opus 5 $0.00009 $0.00665
Sonnet 5 $0.00003 $0.00266
Haiku 4.5 $0.00002 $0.00133

Measured yesterday against content hash aa2293922b97, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

goga-define-prd scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

goga/assets/skills/goga-define-prd/SKILL.md · 353 lines

How it starts

The opening of the file, as written. The whole thing — 353 lines — stays where its author put it; the contents beside it link to each section on GitHub.

goga-define-prd

Purpose

Generate the final Product Requirements Document from the validated product definition.

Transform the complete, conflict-free product context into a single PRD that can be handed to engineering as the product source of truth for technical design.

The PRD must preserve the decisions made during the definition process without introducing new product decisions.


Contract

consume:
  - product
  - problem
  - users
  - goals
  - user_experience
  - requirements
  - constraints
  - scope
  - success_criteria

produce:
  - prd

Core Principle

The PRD is a representation of decisions that have already been made.

This skill is not a product-design stage.

Do not:

  • invent missing requirements;
  • redesign the user experience;
  • introduce new goals;
  • expand scope;
  • choose technical solutions;
  • resolve contradictions.

If the context is not sufficiently complete or internally consistent, report the issue to the orchestrator instead of generating a misleading PRD.


Preconditions

Before generating the PRD, verify that:

  • the problem is defined;
  • relevant users are identified;
  • goals are established;
  • user experience is defined;
  • requirements are explicit;
  • constraints are known;
  • scope is defined;
  • success criteria are established;
  • no unresolved conflicts remain.

If any of these conditions is not satisfied, do not generate the final PRD.


PRD Structure

The PRD must be generated as a Markdown document with the following structure:

# <Product Change Title>

## Problem

## Users

## Goals

## User Experience

## Requirements

## Constraints

## Scope

### In Scope

### Out of Scope

## Success Criteria

Use additional subsections when they improve clarity, but do not introduce unrelated product-management artifacts.


1. Title

Create a concise title that describes the product change.

The title should describe the subject of the change rather than the implementation.

Read the full file on GitHub · 353 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday Changed · -2 lines · +11 tokens per session aa2293922b97
  2. 9d ago First seen · 355 lines · 6 tokens per session scan A 04546d8ab107

Subscribe to this mod's changes

goga-define-prd is a skill published in the GitHub repository qarium/goga (13 stars, last pushed 2d ago), licensed BSD-3-Clause. It adds 17 tokens to every session and 1,331 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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