Returns the campaign’s messages ordered by position in ascending order, then id in ascending order. A message represents a variant. Campaigns can have multiple messages, representing multiple messages for A/B testing.
Accepts either a raw secret key or Bearer <sk_KEY>.
Optional dated API revision for the request. Must use YYYY-MM-DD format.
^\d{4}-\d{2}-\d{2}$"2026-03-01"
Campaign ID.