# Prompt Regression

> Statically checks harness assets against a known-answer probe set after rule/skill changes — inspects the changed source for the trigger phrases, chain links and gate conditions each probe expects, and reports PASS/FAIL/SKIP per probe. Source inspection only; it does not run live sessions, so it catches assets that no longer SAY the right thing, not models that stop DOING it. Triggers on "prompt regression", "did my changes break anything", "regression check", "test harness changes".

## Facts
- Page: https://tashan.sh/capability/skill-chrono-meta-prompt-regression
- tashan id: skill:chrono-meta/prompt-regression
- Source: https://github.com/chrono-meta/forge-harness
- Type: skill
- Category: other
- tashan score: not scored (catalogued only — too little public evidence)
- Adoption: 9.0
- Upkeep: 100.0
- Freshness: 100.0
- Evidence coverage: 84% of the inputs this score can use
- Health: active
- Instruction depth: not yet graded
- License: MIT
- Official: no

## Install

```sh
cp -r prompt-regression ~/.claude/skills/
```

## Security audit
Not scanned. We audit npm-published capabilities; this one has no npm package we can resolve, or has not reached the queue. This is not a clean bill of health.

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Measured 2026-08-25 by tashan (https://tashan.sh) from public evidence. Scorer s5.