Developer API

Expenses API: Added booking_id field to expense objects for trip expenses, and added spending_entity and policy as expand options on List Expenses endpoints. Onboarding API: Updated accepted EIN document types to include CP-575 fax sheet.

Onboarding API: Added new endpoint POST /v1/referrals/{id}/process_ein_document for processing delayed EIN documents after upload. Fields API: Added TRAVEL field type to field definitions. Webhooks API: Added ACCOUNTING_RECORD_READY_FOR_EXPORT webhook event with schema and documentation. Transactions API: Added card_transaction_operation_reference_id field to card transaction objects. Team API: Updated secure endpoint URLs to new api.brex.com hostnames.

Expenses API: Reduced maximum limit parameter from 1000 to 100 for the List Expenses endpoints. Updated the API documentation look and feel.

Added support for new API hostnames (api.brex.com); the former hostnames will continue to work for the forseeable future.

Expenses API: Added dashboard_url field to expense objects, providing a direct link to view expenses in the Brex dashboard.

Accounting API (Alpha): Published the Accounting API reference for ERP partners and customers to discover and integrate with accounting data endpoints. Fields API (Beta): Field definition now exposes optional integration_id and new ERP field type to associate ERP fields with specific integrations. Webhooks API: Expanded WebhookEventType to include ACCOUNTING_RECORD_READY_FOR_EXPORT event type (Alpha).

No updates recorded for October 2025.

No updates recorded for September 2025.

No updates recorded for August 2025.

No changelog entries found for July 2025.

No changelog entries found for June 2025.

Cards API: Updated spend controls documentation with improved nullable property definitions. Fields API (alpha): Added official Fields API documentation with comprehensive endpoint specifications for field creation, updates, and retrieval operations. Expenses API: Deprecated Card Expenses API endpoints in favor of consolidated Expenses API endpoints.

Expenses API: Added documentation for new payment_posted_at_start and payment_posted_at_end filters in the List expenses endpoints, allowing filtering by when payments were posted.

Expenses API: Updated documentation with latest field additions including improved custom fields documentation. Published new endpoints and added spending_entity documentation to provide better visibility into expense attribution.

Budgets API: Updated spend limit creation to support legal_entity_id and department_id parameters for attributing expenses to specific entities and departments. Team API: Added new endpoint to get a legal entity by ID (GET /v2/legal_entities/{id}). Updated CODEOWNERS file to reflect team-specific ownership of API sections.

Team API: The Get card number endpoint response now includes the cardholder name (holder_name). Expenses API: The List expenses endpoint request now allows filtering on the updated_at timestamp of expenses.

Payments API: New endpoints introduced to create incoming transfers, list bank connections, manage transfers, and manage vendor information. Budgets API: Introduced new spend limit and budgets concepts with new API endpoints (v2). The old Spend Limits (v1) API is considered deprecated.

Team API: The Get card endpoint response now returns a has_been_transferred boolean. The Create card endpoint now accepts an expense policy ID (policy_id). Expenses API: The Expense object now returns an optional address, payment posted date, and trip ID if relevant to the expense.

Webhooks: Updated IP whitelist.

Transactions API: The List cash accounts endpoint response now includes a primary boolean field indicating whether the cash account is the primary cash account for the Brex account. All APIs: Added new header X-Brex-Trace-Id for tracing; previous header X-Datadog-Trace-Id is still in use but X-Brex-Trace-Id is recommended as it is vendor-agnostic. Payments API: Added cancellation_reason to the Transfer response.