What changed
No action needed unless you validate responses against a closed schema.
Affects PUT /v1/projects/{projectIdOrName}/feature-flags/flags.
Who is affected
Code that reads PUT /v1/projects/{projectIdOrName}/feature-flags/flags (seenInProduction).
Before and after
| Where | Before | After |
|---|---|---|
| PUT /v1/projects/{projectIdOrName}/feature-flags/flags · seenInProduction | absent | present |
| PATCH /v1/projects/{projectIdOrName}/feature-flags/flags/{flagIdOrSlug} · seenInProduction | absent | present |
Based on Vercel’s published API specification. How severity is decided.