test-assumption
Identify hidden assumptions about users in code that could exclude or harm. A focused analysis asking "What am I assuming about the person using this?
npx skills add majiayu000/claude-skill-registry --skill test-assumption --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Test of Assumption A focused analysis to identify hidden assumptions about users that could exclude or harm them. ## Philosophy Every line of code makes assumptions about who will use it. Most assumptions are invisible to the people making them because they match the developer's own experience. > "What am I assuming about the person using this?" This skill makes the invisible visible. Not to judge—but to **see** who we might be leaving out. ## Scope The user may specify a file path, glob pattern, or directory. If not specified, ask what they'd like to analyze. ## Config Integration Before starting, check for `.inclusion-config.md` in the project root. If it exists: 1. **Read** scope decisions and acknowledged findings 2. **Skip** acknowledged findings (note them in output) 3. **Respect** scope decisions (e.g., if US-only, certain location assumptions are intentional) 4. **Note** at the top of output: "Config loaded: .inclusion-config.md" Core dignity checks always run regardless of config. ## Process ### 1. Read and Understand First, **read the code** to understand: - What does this code do? - Who sees or uses this? (developers? end users? both?) - What's the context? (onboarding
- Philosophy
- Scope
- Config Integration
- Process
- 1. Read and Understand
- 2. Identify Assumptions
- 3. Evaluate Each Assumption
- 4. Prioritize
- Output Format
- The Guiding Question
What does the test-assumption skill do?
Identify hidden assumptions about users in code that could exclude or harm. A focused analysis asking "What am I assuming about the person using this?
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill test-assumption --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.