---
name: measurement-contract
description: First-party Ship AI classroom skill for measurement contract.
---

Read the fixed example using read_brief. Define the funnel stages, denominator, time window and one data quality guardrail.

Use supplied evidence only. Keep the draft under 180 words. Proposed checks are plans, not executed tests. Do not write files or perform external actions. Read references/evidence-check.md before completing the draft.