What changed
No action needed unless you validate responses against a closed schema.
Affects GET /v3/teams/{teamId}/members.
Who is affected
Code that reads GET /v3/teams/{teamId}/members (members[].membershipSource).
Before and after
| Where | Before | After |
|---|---|---|
| GET /v3/teams/{teamId}/members · members[].membershipSource | absent | present |
Based on Vercel’s published API specification. How severity is decided.