Explore all available Brex APIs below. Each API provides specific functionality and integration capabilities for your applications.

Onboarding API

Onboarding API

Native API
Accounting API

Accounting API

Native API
Team API (coming soon)

Team API (coming soon)

Native API
Payments API (coming soon)

Payments API (coming soon)

Native API
Brex API Overview

Brex API Overview

Native API
Transactions API

Transactions API

Native API
Expenses API

Expenses API

Native API
Webhooks API

Webhooks API

Native API
Budgets API

Budgets API

Native API
OpenAPI specification

OpenAPI specification

Native API
SwaggerHub

SwaggerHub

Native API
SwaggerHub Enterprise

SwaggerHub Enterprise

Native API
Swagger Inspector

Swagger Inspector

Native API
Swagger Codegen

Swagger Codegen

Native API
Swagger Editor

Swagger Editor

Native API
Swagger UI

Swagger UI

Native API
OpenAPI Document

OpenAPI Document

Native API
OpenAPI Object

OpenAPI Object

Native API
openapi

openapi

Native API
OpenAPI Initiative

OpenAPI Initiative

Native API
ReadyAPI

ReadyAPI

Native API
Automate your workflows with no-code & Brex

Automate your workflows with no-code & Brex

Native API
Automations

Automations

Native API
Brex API

Brex API

Native API
Expenses API now compatible with Brex Empower

Expenses API now compatible with Brex Empower

Native API
New budgets API for Brex Empower data

New budgets API for Brex Empower data

Native API
New transactions API capabilities

New transactions API capabilities

Native API
Webhooks for Brex API

Webhooks for Brex API

Native API
How AI Can Increase Working Capital: Practical Tips and Strategies

How AI Can Increase Working Capital: Practical Tips and Strategies

Native API
10 procurement trends shaping 2025 corporate strategies

10 procurement trends shaping 2025 corporate strategies

Native API
4 financial ecommerce trends shaping the future of retail

4 financial ecommerce trends shaping the future of retail

Native API
7 working capital loans for small businesses and startups

7 working capital loans for small businesses and startups

Native API
Brex is joining forces with Capital One

Brex is joining forces with Capital One

Native API
Building the Brex API

Building the Brex API

Native API
How Brex + Capital One will accelerate how we serve startups

How Brex + Capital One will accelerate how we serve startups

Native API
Raising Capital in the New Venture Landscape

Raising Capital in the New Venture Landscape

Native API
Brex and Barclays Investment Bank Sign $100M Debt Capital Raise

Brex and Barclays Investment Bank Sign $100M Debt Capital Raise

Native API
Brex Announces API and Zapier Partnership to Automate Payments, Transactions, and More

Brex Announces API and Zapier Partnership to Automate Payments, Transactions, and More

Native API
Brex and Zapier

Brex and Zapier

Native API
Swagger

Swagger

Native API
Swagger Enterprise

Swagger Enterprise

Native API
Swagger Open Source

Swagger Open Source

Native API
spec.openapis.org

spec.openapis.org

Native API
OpenAPI Description

OpenAPI Description

Native API
OpenAPI Description Structure

OpenAPI Description Structure

Native API
OpenAPI Description Formats

OpenAPI Description Formats

Native API