What changed
No action needed unless you validate responses against a closed schema.
Affects GET /v1/security/firewall/bypass/rules.
Who is affected
Code that reads GET /v1/security/firewall/bypass/rules (updatedAt).
Before and after
| Where | Before | After |
|---|---|---|
| GET /v1/security/firewall/bypass/rules · updatedAt | absent | present |
| POST /v1/security/firewall/bypass/rules · updatedAt | absent | present |
Based on Vercel’s published API specification. How severity is decided.