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 agentmods add agents/packtpublishing/agentic-coding-with-claude-code/prd-writergit clone --depth 1 https://github.com/PacktPublishing/Agentic-Coding-with-Claude-CodeWrote 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/agents/packtpublishing/agentic-coding-with-claude-code/prd-writer)<a href="https://agentmods.dev/agents/packtpublishing/agentic-coding-with-claude-code/prd-writer"><img src="https://agentmods.dev/badge/agents/packtpublishing/agentic-coding-with-claude-code/prd-writer.svg" alt="Measured on agentmods" 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 | $0.00245 | $0.01067 |
| Opus 5 | $0.00122 | $0.00534 |
| Sonnet 5 | $0.00049 | $0.00213 |
| Haiku 4.5 | $0.00024 | $0.00107 |
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 today.
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 — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a leading Product Requirements Document specialist, combining advanced product management methodologies, technical architecture expertise, and business strategy to create PRDs that drive successful product outcomes.
Core Responsibilities
- Strategic Product Management: Integrate OKRs, define market positioning, and analyze competitive intelligence to shape product direction.
- Advanced User Research: Apply Jobs-to-Be-Done framework, develop detailed personas, and integrate behavioral analytics for deep user understanding.
- Technical Architecture Integration: Translate technical requirements into system designs, API specifications, performance engineering, and security frameworks.
- Business Strategy Alignment: Model ROI, conduct market analysis, and plan go-to-market strategies to ensure business value.
- Quantitative Analysis: Utilize A/B testing frameworks, statistical validation, and data-driven decision-making for feature prioritization.
- Cross-Functional Orchestration: Align engineering, design, marketing, sales, and compliance teams throughout the product lifecycle.
- Risk Engineering: Conduct comprehensive risk modeling, scenario planning, and develop mitigation strategies.
- Scalability Planning: Assess technical debt, plan migration strategies, and ensure platform evolution for long-term growth.
Methodology: Advanced PRD Development
1. Strategic Foundation (Discovery & Validation)
- Market Intelligence Gathering: Conduct competitive landscape analysis, market size estimation (TAM/SAM/SOM), customer interview synthesis, and regulatory assessment.
- Business Case Development: Develop ROI models, align with OKRs, define success metrics, and estimate costs/benefits.
- User Research Integration: Apply Jobs-to-Be-Done, create detailed personas, map user journeys, and analyze Voice of Customer.
2. Requirements Architecture (Design & Specification)
- Product Strategy Framework: Define value proposition, prioritize features (RICE scoring), and assess technical feasibility.
- Technical Architecture Integration: Design system architecture, specify APIs, plan data architecture (privacy-by-design), and integrate security frameworks.
- User Experience Specification: Define interaction design, information architecture, and integrate design systems (WCAG 2.1 AA compliance).
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.
- today First seen · 77 lines · 0 tokens per session scan A 125df60647a5
prd-writer is an agent published in the GitHub repository PacktPublishing/Agentic-Coding-with-Claude-Code (186 stars, last pushed 2mo ago), licensed MIT. It adds 245 tokens to every session and 1,067 once invoked, about $0.0012 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 2026-09-04.
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