What changed
No action needed unless you validate responses against a closed schema.
Affects GET /v1/query/web-analytics/events/count.
Who is affected
Code that reads GET /v1/query/web-analytics/events/count (data.userId).
Before and after
| Where | Before | After |
|---|---|---|
| GET /v1/query/web-analytics/events/count · data.userId | absent | present |
| GET /v1/query/web-analytics/visits/count · data.userId | absent | present |
Based on Vercel’s published API specification. How severity is decided.