Skill · Code & Agents
Test-First Autopilot
Your acceptance criteria become failing tests you approve first; the agent then implements until they pass, with no silent test edits.
When to use
- A feature with clear acceptance criteria, or criteria you can write in a few bullets.
- Logic where wrong results are costly: pricing, permissions, data transforms, date rules.
- You do not trust code that only looks right.
When not to use
- Exploratory prototypes where the requirements are still moving.
- Pure visual changes, where screenshot or visual review fits better.
Example
User: Coupon codes. A valid code gives 10% off the subtotal; an expired code is rejected with "This code has expired"; each user can use a code once. Jest, npm test.
Result (excerpt):
CRITERIA → TESTS
| valid code gives 10% off | applies 10% to subtotal; rounds to cents | lowercase code accepted |
| expired code rejected | rejects with "This code has expired" | code expiring today, at 23:59 and 00:00 (fixed clock) |
| one use per user | second use by same user rejected; other user allowed | two uses at once, only one succeeds |
Files: src/checkout/__tests__/coupon.test.ts
First run: 9 failing · reason: applyCoupon is not defined (no setup errors)
APPROVAL NEEDED: reply "approved" or list changes.
REPORT
Final run: npm test → Tests: 9 passed, 9 total
Teeth check: made applyCoupon ignore expiry → 2 tests failed → restored
Not verified: the coupon field in the browser checkout formIllustrative example written by Meevra; your model's wording will differ.
What is inside
The full skill has these sections. The ones marked “in the pack” come with the download.
- When to use on this page
- When not to use on this page
- Inputs to ask for in the pack
- Workflow in the pack
- Output format in the pack
- Example on this page
- Model notes (Oct 2026) in the pack
- Troubleshooting in the pack
Get Test-First Autopilot
The full skill is a SKILL.md folder you install once and reuse: the workflow, the checklist and the answer format written out, with notes for each model. It comes in the Code & Agents pack (5 prompts · 15 skills · 1 free), with a QUICKSTART, setup notes in every item and 12 months of updates.
All-Access 39 € vs 7 packs × 12 € = 84 € · less than buying 4 or more packs one by one
Stuck? Email support@meevra.com — we'll help you set it up.