---
name: ac-expander
description: Turn vague Acceptance Criteria into measurable checks and test assertions
version: 0.1.0
tags: [requirements, testing]
triggers:
  - acceptance criteria
  - refine criteria
  - measurable
---

# Acceptance Criteria Expander

## Purpose
Rewrite ambiguous AC into specific, testable checks and edge cases.

## Behavior
1. For each AC, create measurable statements with inputs/outputs.
2. Add 2–4 edge cases (bounds, invalid, error paths).
3. Suggest test names that map 1:1 to checks.

## Guardrails
- Preserve original intent; show original text and revised version.
- Keep each AC concise (≤3 lines each).

## Integration
- Project Manager agent; `/lazy create-feature` refinement step.

## Example Prompt
> Make these AC measurable and propose matching tests.