BrexAPIintegration&MCPserver

Deliver real-time Payment faster, close sales deals sooner, and scale without an integration backlog.

Add Brex to your app See feature support

Try free for 30 days, no credit card required

Add Brex and 7 other pre-built Payment integrations

Real-time data to fuel countless Payment use cases

Power AI copilots, insights, predictive analysis, and automation with a modern integration infrastructure that scales alongside you.

payment

Payment Links

Generate and send payment links with invoices, making it easy for customers to pay online.

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ACCOUNTING Account

ACCOUNTING Transaction

ACCOUNTING Organization

Payment

ACCOUNTING Contact

HRIS Employee

HRIS Location

HRIS Group

ACCOUNTING Expense

Passthrough

ACCOUNTING Account

ACCOUNTING Transaction

ACCOUNTING Organization

Payment

ACCOUNTING Contact

HRIS Employee

HRIS Location

HRIS Group

ACCOUNTING Expense

Passthrough

Your customer's data

on Brex

Unified API data-models and methods

ACCOUNTING Account

list get

ACCOUNTING Transaction

list

ACCOUNTING Organization

list get

Payment

list get

ACCOUNTING Contact

list get

HRIS Employee

list get create update

HRIS Location

list get create

HRIS Group

list get create

ACCOUNTING Expense

list get

Passthrough

get post put patch delete

49 Unified MCP tools

create an employee32 parameters

list all employees3 parameters

retrieve an employee2 parameters

update an employee33 parameters

create a location12 parameters

list all locations4 parameters

retrieve a location2 parameters

create a group9 parameters

list all groups4 parameters

retrieve a group2 parameters

list all accounts3 parameters

retrieve an account2 parameters

list all transactions4 parameters

list all contacts4 parameters

retrieve a contact2 parameters

retrieve an organization2 parameters

list all organizations 1 parameter

list all expenses5 parameters

retrieve an expense2 parameters

list all payments3 parameters

retrieve a payment2 parameters

3 parameters

9 parameters

2 parameters

5 parameters

2 parameters

7 parameters

5 parameters

3 parameters

2 parameters

3 parameters

2 parameters

3 parameters

2 parameters

5 parameters

9 parameters

2 parameters

9 parameters

2 parameters

4 parameters

The modern Unified API platform, built differently

Real-time, pass-through

Every request hits the source API live. No caching, no sync jobs, no stale data — just on-demand API reads/writes with native and virtual webhooks for instant updates.

Zero-storage by design

We never store end-customer data. Traffic is stateless and regionalized (US/EU/AU), reducing compliance scope and eliminating data-at-rest risk.

One API, deeply normalized

360+ integrations, 23 categories... Unified objects, endpoints, scopes, and errors—plus raw payload passthrough when you need provider-specific fields.

Custom fields & objects

Go beyond shallow schemas. We support custom fields and read/write on custom objects (e.g., Salesforce) via unified metadata APIs.

AI-ready integrations

Built for AI products: real-time streams for RAG/embeddings and Unified MCP tools that securely grant LLMs controlled integration access.

Predictable pricing, no lock-in

Transparent usage-based pricing that scales with API volume—not customers. Own your credentials and migrate anytime.

Add a Brex integration to your application in hours

1Test drive integrations

Effortlessly test API calls, explore endpoints, and try out the Brex integration using synthetic data in our Sandbox environment.

2Authorize connections

Drop in our Authorization component with a single line of code. Your users can then connect and grant access to their Brex data.

3Start making API calls

Use the Connection ID to interact with Brex via our unified API. We handle maintenance and updates so you can focus on your product.

Seamless Auth, no extra work

Unified.to removes the complexity of authentication and authorization so you can focus on building your product, not managing auth flows. Our pre-built UI and flexible API handle everything in the background—no extra setup required.

See documentation

React

React component React component source code

Trusted by global product companies and developers to power integrations for innovative AI and SaaS applications

5 stars on G2

Integrate with all the major payment applications

Unified.to makes it possible to integrate once to a unified API to connect with all the applications your customers use, so you can train AI models, build advanced automation, and expand your market.

Start testing for free