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Changelog

This changelog tracks changes to the Brex API and is updated periodically. Updates to the API are on a rolling basis and not on any defined schedule.

February 2026

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

January 2026

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

December 2025

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

November 2025

  • Accounting API (Alpha): Published the Accounting API reference so ERP partners or customers can discover and integrate with accounting data endpoints.
  • Fields API (Beta): Field definition now exposes an optional integration_id and a new ERP field type. This allows API caller to associate an ERP field with specific integration.
  • Webhooks API: Expanded WebhookEventType to include ACCOUNTING_RECORD_READY_FOR_EXPORT event type (Alpha).

May 2025

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

April 2025

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

March 2025

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

January 2025

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

December 2024

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

October 2024

  • 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 as a new set of API endpoints (v2). The old Spend Limits (v1) API is considered deprecated.

September 2024

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

July 2024

February 2022

  • Transactions API: The List cash accounts endpoint response object now includes a primary boolean field indicating whether the cash account is the primary cash account for the Brex account. Every Brex user must have one primary cash account.
  • All APIs: Added a new header for tracing with a generic name X-Brex-Trace-Id. Although the previous header X-Datadog-Trace-Id is still in use as of now, we recommend to start using X-Brex-Trace-Id as it is vendor-agnostic and will unlikely change overtime.
  • Payments API: Added cancellation_reason into the Transfer response.

January 2022

  • Webhooks API: Added beta support for webhooks. View the webhooks guide for how to get started and the webhooks API reference for supported events and how to use them.
  • Team API: Added a monthly_available object to the responses for both the GET and SET methods for user limits

December 2021

  • Payments API: Added the ability to do book transfers between Brex Cash accounts. See counterparty -> type -> BOOK_TRANSFER in the request body for the Create Transfer endpoint

November 2021

October 2021

  • Payments API: Added the ability to filter vendors by name (via encoded query param) for the lists vendors endpoint
 
 
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