Developer API
The API continued filling gaps in expense workflows and onboarding while expanding webhook coverage. In Expenses, Brex added trip-specific metadata (booking_id) and richer filtering through expand options, then tightened pagination limits to 100 items. Onboarding moved beyond initial document submission with a new endpoint for reprocessing delayed EIN documents and broadened accepted document types. A new ACCOUNTING_RECORD_READY_FOR_EXPORT webhook event connected the platform to downstream accounting systems, and the Team API migrated to unified api.brex.com hostnames.
The Onboarding API expanded document acceptance to include CP-575 fax sheets for EIN verification. Meanwhile, the Expenses API added booking IDs to expense objects and introduced spending_entity and policy as expand options on List endpoints, enabling deeper context retrieval for trip expenses.