# Gate Verification: Stage [N] → [N+1]
Verification date: YYYY-MM-DD | Rule: every item must be PASS. "Almost PASS" is FAIL.

## Gate 1 (Core → SaaS) baseline items
- [ ] Core processing: 5 consecutive successes with varied inputs
- [ ] Output quality: would I pay for this?
- [ ] I know the cost per processing run as a number (→ enter in Appendix D ③)
- [ ] Module inputs / outputs match the spec document exactly
- [ ] Freeze list for the next Stage written

## Gate 2 (SaaS → Monetization) baseline items
- [ ] Someone else can sign up and complete the core feature with no guidance
- [ ] User data isolation confirmed (User A's data not visible to User B)
- [ ] Full flow working in the deployment environment
- [ ] What the user sees when an error occurs has been checked
- [ ] API Freeze declared

## Project-specific items (add your own)
- [ ]

## Verdict: PASS / FAIL → list FAIL items and actions: