pm-prd

pm-prd is a skill for Claude Code from ljucask/pureinn-product-development. It costs 90 tokens per session (8,127 once invoked), scanned A, original, MIT.

A product-requirements document tool that creates either a full product plan or a smaller plan for one major feature area.

In plain words
What is it for?
Use it to document the product problem, reasons for building it, and the business capabilities a product or feature area needs.
Why use it?
It turns earlier research and planning work into one structured reference document. It also marks missing information instead of silently making it up.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions CLAUDE.md; mentions subagents; names the AskUserQuestion tool.

Part of the pureinn-product-development plugin — 51 skills, 1 command shipped together

Good fit Use it to document the product problem, reasons for building it, and the business capabilities a product or feature area needs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ljucask/pureinn-product-development/pm-prd
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 ljucask/pureinn-product-development --skill pm-prd
Clone the repo
git clone --depth 1 https://github.com/ljucask/pureinn-product-development

Made for: Claude Code.

Or install pureinn-product-development, the plugin that ships this one along with the rest of its 51 skills, 1 command.

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 pm-prd

README.md
[![agentmods](https://agentmods.dev/badge/skills/ljucask/pureinn-product-development/pm-prd/github.svg)](https://agentmods.dev/skills/ljucask/pureinn-product-development/pm-prd)
Your own site
<a href="https://agentmods.dev/skills/ljucask/pureinn-product-development/pm-prd"><img src="https://agentmods.dev/badge/skills/ljucask/pureinn-product-development/pm-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 pm-prd

Your own site · 80×15
<a href="https://agentmods.dev/skills/ljucask/pureinn-product-development/pm-prd"><img src="https://agentmods.dev/badge/skills/ljucask/pureinn-product-development/pm-prd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,127 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.
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 $0.00090 $0.08127
Opus 5 $0.00045 $0.04064
Sonnet 5 $0.00018 $0.01625
Haiku 4.5 $0.00009 $0.00813

Measured 10d ago against content hash 3651c47c79d9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

pm-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 10d ago.

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.

skills/pm-prd/SKILL.md · 769 lines

How it starts

The opening of the file, as written. The whole thing — 769 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PM - Product Requirements Document (PRD)

Agent mode (--agent)

Supports --agent: runs autonomously in a subagent, drafts the artifact from existing inputs, and returns a short summary + coverage note.

  • No flag → interactive (default); if inputs are heavy, offer agent mode.
  • --agent → obey. First check inputs are complete. Anything missing: do NOT invent it - mark [ASSUMED - what/why] in the output and summary. Never hallucinate to fill a gap.

Artifact language

Checks state.jsonartifact_language. Default (unset or "English"): no change in behavior.

  • If set to a non-English language: write the PRD's prose (problem statement, rationale, Business Capability descriptions, narrative sections) in that language.
  • Never translate: FEAT-ID/BR-ID references, frontmatter keys and enum values, section headers (## Business Capabilities, etc.), file names - these stay English always, regardless of the setting.

What this skill does

Two modes - detected automatically in Step 0:

Mode Context Inputs Output Frozen?
Product PRD Greenfield Phase 3b All Phase 2+3a+3b outputs product/PRD_master.md Yes - frozen after creation
Initiative PRD Feature Implementation after Track B initiatives/[slug]/discovery/ initiatives/[slug]/prd.md No - living for that initiative

Product PRD_master is the original product scope document. It does NOT change after creation. New scope, new functionality, changed assumptions → new Initiative PRD for that initiative. PRD_master remains as the stable historical record.

Initiative PRD is a leaner document scoped to one domain/initiative. It contains Business Capabilities for that domain only - the entry point for pm-entity-registry (append mode), pm-business-rules-library (append mode), and pm-features-list (FI append mode) for this initiative.


Product PRD synthesizes all Phase 2, Phase 3a, and Phase 3b outputs into a single coherent product-level document:

Read the full file on GitHub · 769 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. 10d ago First seen · 769 lines · 90 tokens per session scan A 3651c47c79d9

Subscribe to this mod's changes

pm-prd is a skill published in the GitHub repository ljucask/pureinn-product-development (2 stars, last pushed today), licensed MIT. It adds 90 tokens to every session and 8,127 once invoked, about $0.0005 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 2026-08-31.

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