AI tools, scored for your job
Get paid to train AI
🤝 You're in the Free & Open Source library — community-built tools you can use without paying. A different concept from our scored AI directory.
Home › Free & Open Source › Construction › use-case-writer
✦ Free & open sourceConstruction

use-case-writer

Claude AI skill for generating Karl Wiegers 13-field use case specs.

Claude AI Skill for Use Case Specs

Scope, analyze, and document IIBA-compliant use cases in Markdown.

Free forever · open source · MIT
✓ Light setup✓ Browser-based✓ Real-time collaboration
5.8
ZEKAI
Essential for AI-driven BA specs
Free & open source · Construction
Ease of setup3
Usefulness8
Maintenance7
Community5
★ 151
GITHUB
May 2026
UPDATED
MIT
LICENSE
🛠 Don't want to self-host? We can set it up →
⚡ Quick answer

This repository provides a Claude AI skill designed for business analysts and product owners to write structured use case specifications. It enforces rigorous scoping rules and generates English Markdown following the Karl Wiegers template.

Runs on
Cross-platform
Hosting
Desktop
Languages
License
MIT

What it is

The tool uses progressive disclosure, loading a core workflow file into Claude while keeping reference guides for templates, writing styles, and a 20-point quality checklist separate. It operates in four modes, allowing you to write new specs, split features into use lists, refine existing content, or target specific sections.

Who it's for

It suits technical product managers and IT business analysts who want to standardise their requirements documentation using Claude. It does not suit teams looking for a visual drag-and-drop requirements management UI or non-technical stakeholders unfamiliar with Markdown.

Key features

Sequential Workflow Gates

Generates use cases section by section with confirmation steps to catch scoping errors early.

Cockburn Scoping Rules

Applies goal levels, system boundaries, and the coffee-break test before writing begins.

20-Point Checklist

Auto-runs a validation check on every generated use case before handover.

Bilingual Interaction

Chat in Vietnamese or English while producing the final artifact in English Markdown.

How to start

Up and running in 3 steps

1
Clone the repository into your local or project-level .claude/skills directory
2
Verify the skill folder structure matches your chosen platform path
3
Invoke the skill using Claude Code CLI or upload the folder to a Claude Project
Real talk

Our honest verdict

What's great

  • Enforces industry-standard 13-field Karl Wiegers template formatting
  • Includes built-in identification techniques for breaking down large features
  • Progressive disclosure design keeps Claude context usage efficient
  • Provides complete EdTech reference examples for training

Where it falls short

  • Requires manual cloning and placement into local Claude skills directories
  • Dependent on Claude's context window and generation accuracy
  • Produces output solely in English Markdown
Cost

Pricing & license

Free under its open source licence, with no paid hosted option mentioned in the repository. The only cost is your time and any subscription fees required to access Claude.

Paid work

Open remote AI-training roles

767 open remote AI-training roles, updated November 14, 2026; most pay $20–$175 an hour. Zekai lists them free; the application goes to the employer’s platform.

See all open roles →
Compare

Alternatives

Get more

Use it, or have us set it up

📄 Free PDF: use-case-writer for Construction
A plain-language guide to getting your first result. Sent to your inbox.
🔔 64 people want a full video tutorial — add your vote
🛠 Don't want to set it up yourself?
We'll install, host & configure use-case-writer for you — and train your team.
Get it done for you ↗
Questions

FAQ

How do I install the skill globally?

Clone the repository into your user-level skills directory at ~/.claude/skills/ba-zone-use-case-writer on Mac or Linux, or %USERPROFILE%.claudeskillsba-zone-use-case-writer on Windows.

What output format does the skill generate?

It outputs English Markdown structured around the 13-field Karl Wiegers and IIBA style template.

Can I interact with the skill in languages other than English?

Yes, you can chat in Vietnamese or English, and the skill will still output the final use case artifact in English.

Radar

Latest AI news

✉️ The weekly free toolkit
The best new free & open-source tools for Construction — one short email a week, in your language.
Free · 1 email/week · unsubscribe anytime
Get paid to train AI →

See Zekai first in Google