write-prd

write-prd is a skill for Claude Code from yonatangross/orchestkit. It costs 54 tokens per session (1,860 once invoked), scanned A, original, MIT.

A structured guide for writing a Product Requirements Document (PRD), a document that explains what a product or feature should do and how its success will be judged. It covers user stories, acceptance criteria, research, and go/no-go decisions.

In plain words
What is it for?
Use it to write full or lightweight PRDs, define user stories, record acceptance criteria, and decide whether a feature is ready to build or release.
Why use it?
It turns a product idea into a shared specification that engineers and stakeholders can review before implementation. Templates also make missing requirements and unclear success conditions easier to spot.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: agent in frontmatter; names the AskUserQuestion tool; mentions Claude Code.

Part of the ork plugin — 111 skills, 38 commands, 36 agents, 32 hooks shipped together

Good fit Use it to write full or lightweight PRDs, define user stories, record acceptance criteria, and decide whether a feature is ready to build or release.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yonatangross/orchestkit/write-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 yonatangross/orchestkit --skill write-prd
Clone the repo
git clone --depth 1 https://github.com/yonatangross/orchestkit

Made for: Claude Code.

Or install ork, the plugin that ships this one along with the rest of its 111 skills, 38 commands, 36 agents, 32 hooks.

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 write-prd

README.md
[![agentmods](https://agentmods.dev/badge/skills/yonatangross/orchestkit/write-prd/github.svg)](https://agentmods.dev/skills/yonatangross/orchestkit/write-prd)
Your own site
<a href="https://agentmods.dev/skills/yonatangross/orchestkit/write-prd"><img src="https://agentmods.dev/badge/skills/yonatangross/orchestkit/write-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 write-prd

Your own site · 80×15
<a href="https://agentmods.dev/skills/yonatangross/orchestkit/write-prd"><img src="https://agentmods.dev/badge/skills/yonatangross/orchestkit/write-prd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,860 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
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 $0.00054 $0.01860
Opus 5.5 $0.00022 $0.00744
Sonnet 5.5 $0.00011 $0.00372
Haiku 4.5 $0.00005 $0.00186

Measured 1mo ago against content hash 9aadc02cdb8b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

write-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 1mo 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.

plugins/ork/skills/write-prd/SKILL.md · 174 lines

How it starts

The opening of the file, as written. The whole thing — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PRD — Product Requirements Document

Translate product vision and research into clear, actionable engineering specifications. Produces PRD-[product-name].md output files following an 8-section structure.

Output file naming: PRD-[product-name].md (e.g., PRD-sso-invite-flow.md)

Argument Resolution

PRODUCT = "$ARGUMENTS"  # Product name or feature, e.g., "SSO invite flow"

STEP 0: Scope Clarification

AskUserQuestion(
  questions=[{
    "question": "What type of PRD?",
    "header": "PRD Scope",
    "options": [
      {"label": "Full PRD (Recommended)", "description": "All 8 sections with research, stories, and release plan"},
      {"label": "Lightweight spec", "description": "Summary, objectives, user stories only"},
      {"label": "User stories only", "description": "INVEST stories with acceptance criteria"},
      {"label": "Update existing PRD", "description": "I have a PRD file to iterate on"}
    ],
    "multiSelect": false
  }]
)

Task Management

# 1. Create main task IMMEDIATELY
TaskCreate(subject="Write PRD: {PRODUCT}", description="8-section PRD with user stories and acceptance criteria", activeForm="Writing PRD for {PRODUCT}")

# 2. Create subtasks for each phase
TaskCreate(subject="Scope clarification", activeForm="Clarifying PRD scope")                       # id=2
TaskCreate(subject="Research and memory check", activeForm="Researching prior PRDs")               # id=3
TaskCreate(subject="Draft 8-section PRD", activeForm="Drafting PRD sections")                      # id=4
TaskCreate(subject="Write user stories and acceptance criteria", activeForm="Writing user stories") # id=5
TaskCreate(subject="Write output file", activeForm="Writing PRD file")                             # id=6

# 3. Set dependencies for sequential phases
TaskUpdate(taskId="3", addBlockedBy=["2"])  # Research needs scope first
TaskUpdate(taskId="4", addBlockedBy=["3"])  # Drafting needs research context
TaskUpdate(taskId="5", addBlockedBy=["4"])  # Stories need draft structure
TaskUpdate(taskId="6", addBlockedBy=["5"])  # Output needs all sections done

# 4. Update status as you progress
TaskUpdate(taskId="2", status="in_progress")  # When starting
TaskUpdate(taskId="2", status="completed")    # When done — repeat for each subtask

Read the full file on GitHub · 174 lines

Files

What ships with it

9 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.

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. 1mo ago Changed 9aadc02cdb8b
  2. 1mo ago First seen · 174 lines · 54 tokens per session scan A 135aa4c97890

Subscribe to this mod's changes

write-prd is a skill published in the GitHub repository yonatangross/orchestkit (298 stars, last pushed yesterday), licensed MIT. It adds 54 tokens to every session and 1,860 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-05.

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