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.
npx skills add hardiktiwari/PM-operating-OS --skill prd-writergit clone --depth 1 https://github.com/hardiktiwari/PM-operating-OSWrote 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.
[](https://agentmods.dev/skills/hardiktiwari/pm-operating-os/prd-writer)<a href="https://agentmods.dev/skills/hardiktiwari/pm-operating-os/prd-writer"><img src="https://agentmods.dev/badge/skills/hardiktiwari/pm-operating-os/prd-writer/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.
<a href="https://agentmods.dev/skills/hardiktiwari/pm-operating-os/prd-writer"><img src="https://agentmods.dev/badge/skills/hardiktiwari/pm-operating-os/prd-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00046 | $0.01516 |
| Opus 5 | $0.00023 | $0.00758 |
| Sonnet 5 | $0.00009 | $0.00303 |
| Haiku 4.5 | $0.00005 | $0.00152 |
Grade A, and why
prd-writer 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.
How it starts
The opening of the file, as written. The whole thing — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PRD Writer
Create comprehensive Product Requirements Documents following a structured PRD template format. This skill ensures consistent, well-structured PRDs that align with product development standards.
When to Use
- User explicitly asks for a PRD
- User wants to document product requirements
- User needs to formalize a product idea into a structured document
- User mentions "product requirements", "PRD", or "spec"
PRD Structure
1. Header Section
🚧 Draft | ✅ Approved | 🔄 In Review
LAST UPDATED: [Date]
[PRD Title]
[One-line description of initiative for quick context]
2. Governance Table (RACI)
| ROLE | NAMES | REVIEW STATUS |
|---|---|---|
| RESPONSIBLE (Drive decision process) | PM (Primary Owner): [Name], Design: [Name], Eng: [Name] | Not started |
| ACCOUNTABLE (Ultimate decision authority) | [Name] | Not started |
| CONSULTED (Contribute input) | [Names] | Not started |
| INFORMED | [Names] | Not started |
3. Background & Current State
- Current state experience with pain points
- Industry data and competitive landscape
- Link to recordings, Figma files, or other references
4. Problem Statements (Customer Problem Framework)
Use the problem statement framework:
Customer Problem:
I am… [narrow description of customer]
I am trying to… [desired outcome]
But… [problem or barrier]
Because… [root cause]
Which makes me feel… [emotion]
Business Problem:
I am… [business unit/team]
I am trying to… [business goal]
But… [challenge]
Because… [root cause]
Which makes me feel… [impact]
5. Ideal State
In a perfect world: [Vision of solved problem]
The biggest benefit to me is: [Primary value proposition]
Which makes me feel: [Emotional outcome]
6. Business Goals and Success Metrics
| GOAL/METRIC | DESCRIPTION | TARGET |
|---|---|---|
| [Metric name] | [Brief description] | [Target value] |
7. Key Features
High-level explanation of feature areas (3-6 features):
- Feature 1: [Description]
- Feature 2: [Description]
- Feature 3: [Description]
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 200 lines · 46 tokens per session scan A 71dff98edc4c
prd-writer is a skill published in the GitHub repository hardiktiwari/PM-operating-OS (5 stars, last pushed 4mo ago), licensed MIT. It adds 46 tokens to every session and 1,516 once invoked, about $0.0002 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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