shipjaw-prompt

shipjaw-prompt is a skill for Claude Code from XyDisorder/shipjaw. It costs 147 tokens per session (877 once invoked), scanned A, original, MIT.

A guided writing tool that turns a rough product idea into a clear, detailed prompt for building a TypeScript app.

In plain words
What is it for?
Clarifying a brainstorm, trimming its scope, saving the finished prompt, and passing it to the app-building step.
Why use it?
It fills in important missing decisions without making you restart the idea from scratch, while keeping the first version focused.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: names the AskUserQuestion tool.

Good fit Clarifying a brainstorm, trimming its scope, saving the finished prompt, and passing it to the app-building step.

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Install with agentmods
npx agentmods add skills/xydisorder/shipjaw/shipjaw-prompt
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 XyDisorder/shipjaw --skill shipjaw-prompt
Clone the repo
git clone --depth 1 https://github.com/XyDisorder/shipjaw

Made for: Claude Code.

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 shipjaw-prompt

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/xydisorder/shipjaw/shipjaw-prompt"><img src="https://agentmods.dev/badge/skills/xydisorder/shipjaw/shipjaw-prompt.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 147 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 877 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 $0.00147 $0.00877
Opus 5 $0.00073 $0.00439
Sonnet 5 $0.00029 $0.00175
Haiku 4.5 $0.00015 $0.00088

Measured 12d ago against content hash daa8cf6fe393, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

shipjaw-prompt 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 12d 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.

.claude/skills/shipjaw-prompt/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

shipjaw-prompt

Expression only. Takes messy notes / a vague idea and produces a build-ready product prompt that shipjaw-build can consume with almost no rediscovery. Does not scaffold an app, does not create documentation/knowledge-base/.

Anti-triggers

  • documentation/knowledge-base/ exists → shipjaw-ask (product already bootstrapped)
  • User already has a polished prompt and wants code now → shipjaw-build
  • Pure CSS/copy tweak / non-TypeScript → refuse

Checklist

- [ ] Intake raw idea
- [ ] Clarify gaps only (≤2 rounds / ~8 Q); default the rest
- [ ] Craft dense prompt (references/prompt-craft.md)
- [ ] Scope trim gate (references/prompt-craft.md): Core action has no
      personalization/adaptation clause; every v1 scope bullet must break
      the core action if cut; no Success criterion chains multiple
      features into one end-to-end checkbox — trim now, don't hedge in a
      note
- [ ] Write documentation/product/source-prompt.md (never KB)
- [ ] Write documentation/handoff.md → next /shipjaw-build
- [ ] Hand off: /shipjaw-build

Workflow

  1. Intake — read the user's raw expression (any language, any mess).
  2. Clarify only gaps — max 2 rounds / ~8 questions total. Prefer structured host questions (AskUserQuestion / AskQuestion) else numbered chat. Use ../shipjaw-build/references/discovery-questions.md as the question bank; skip anything already answered. Then default and record defaults inside the prompt.
  3. Craft the prompt — follow references/prompt-craft.md, including its mandatory scope trim gate (Core action, v1 scope, and Success criteria all checked for smuggled-in scope). Output must be dense, unambiguous, and sufficient for shipjaw-build step 1–3.
  4. Persist — write documentation/product/source-prompt.md from templates/source-prompt.md (create documentation/product/ only — never create knowledge-base/ here). Overwrite only if the user confirms when a source-prompt already exists.
  5. Hand off — show the final prompt in chat and tell the user to run /shipjaw-build (no args if the file exists, or paste the prompt).

Read the full file on GitHub · 72 lines

Files

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.

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. 12d ago First seen · 72 lines · 147 tokens per session scan A daa8cf6fe393

Subscribe to this mod's changes

shipjaw-prompt is a skill published in the GitHub repository XyDisorder/shipjaw (2 stars, last pushed 4d ago), licensed MIT. It adds 147 tokens to every session and 877 once invoked, about $0.0007 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.