# Brex

```json
{
  "name": "Brex",
  "slug": "brex",
  "url": "https://composio.dev/toolkits/brex",
  "markdown_url": "https://composio.dev/toolkits/brex.md",
  "logo_url": "https://logos.composio.dev/api/brex",
  "categories": [
    "finance & accounting"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-05-06T08:03:57.847Z"
}
```

![Brex logo](https://logos.composio.dev/api/brex)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Brex MCP or direct API to automate expense reports, review transactions, manage company cards, and generate real-time spend analytics through natural language.

## Summary

Brex provides corporate credit cards and spend management tailored for startups and tech businesses. It helps optimize company cash flow, streamline accounting, and accelerate business growth.

## Categories

- finance & accounting

## Toolkit Details

- Tools: 35

## Images

- Logo: https://logos.composio.dev/api/brex

## Authentication

- **Oauth2**
  - Type: `oauth2`
  - Description: Oauth2 authentication for Brex.
  - Setup:
    - Configure Oauth2 credentials for Brex.
    - Use the credentials when creating an auth config in Composio.
- **Api Key**
  - Type: `api_key`
  - Description: Api Key authentication for Brex.
  - Setup:
    - Configure Api Key credentials for Brex.
    - Use the credentials when creating an auth config in Composio.

## Suggested Prompts

- Create a new card for our intern
- Get the latest account statement PDF
- Add an expense for last week's conference
- Set up a budget for the marketing team

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `BREX_CREATE_BUDGET` | Create Budget | Create a new budget for departments or projects. |
| `BREX_CREATE_CARD` | Create Card | Create a new card and assign it to a user. |
| `BREX_CREATE_DEPARTMENT` | Create Department | Create a new department. |
| `BREX_CREATE_EXPENSE` | Create Expense | Create a new expense. |
| `BREX_CREATE_LOCATION` | Create Location | Create a new location. |
| `BREX_CREATE_TITLE` | Create Job Title | Create a new job title. |
| `BREX_CREATE_USER` | Create User | Create a new user in the brex account. |
| `BREX_CREATE_VENDOR_CARD` | Create Vendor Card | Create a new vendor card. |
| `BREX_GET_ACCOUNT_DETAILS` | Get Account Details | Get details about the current brex account. |
| `BREX_GET_ACCOUNT_STATEMENTS` | Get Account Statements | Get account statements. |
| `BREX_GET_BUDGET_DETAILS` | Get Budget Details | Get detailed information about a specific budget. |
| `BREX_GET_BUDGET_TRANSACTIONS` | Get Budget Transactions | Get transactions for a specific budget. |
| `BREX_GET_CARD_DETAILS` | Get Card Details | Get detailed information about a specific card. |
| `BREX_GET_CARD_TRANSACTIONS` | Get Card Transactions | Get card transactions for a date range. |
| `BREX_GET_COMPANY_CASH_ACCOUNTS` | Get Company Cash Accounts | Get company cash accounts. |
| `BREX_GET_EXPENSE_DETAILS` | Get Expense Details | Get details of a specific expense. |
| `BREX_GET_EXPENSES` | Get Expenses | Get expenses for a date range. |
| `BREX_GET_SPEND_LIMITS` | Get Spend Limits | Get spend limits configuration. |
| `BREX_GET_TRANSACTION_BY_ID` | Get Transaction by ID | Get details of a specific transaction by id. |
| `BREX_GET_TRANSACTIONS` | Get Transactions | Get transactions for a date range. |
| `BREX_GET_TRANSACTIONS_BY_AMOUNT_RANGE` | Get Transactions by Amount Range | Get transactions filtered by amount range. |
| `BREX_GET_TRANSACTIONS_BY_DESCRIPTION` | Get Transactions by Description | Get transactions filtered by description text. |
| `BREX_GET_USER_PROFILE` | Get User Profile | Get user profile information for current or specified user. |
| `BREX_LIST_BUDGETS` | List Budgets | List all budgets and show available amounts across all cards. |
| `BREX_LIST_CARDS` | List Cards | List all cards associated with the account. |
| `BREX_LIST_DEPARTMENTS` | List Departments | List all departments in the organization. |
| `BREX_LIST_LOCATIONS` | List Locations | List all locations in the organization. |
| `BREX_LIST_TITLES` | List Job Titles | List all job titles in the organization. |
| `BREX_LIST_USERS` | List Users | List all users in the brex account. |
| `BREX_LIST_VENDORS` | List Vendors | List all vendors. |
| `BREX_TRANSFER_CARD` | Transfer Card | Transfer a card to a different user. |
| `BREX_UPDATE_BUDGET` | Update Budget | Update budget details. |
| `BREX_UPDATE_CARD_LIMITS` | Update Card Limits | Update spending limits and controls for a card. |
| `BREX_UPDATE_CARD_STATUS` | Update Card Status | Update the status of a card (activate/deactivate/terminate). |
| `BREX_UPDATE_USER` | Update User | Update user details. |

## Supported Triggers

None listed.

## Installation and MCP Setup

### Path 1: SDK Installation

#### Path 1, Step 1: Install Composio

Install the Composio SDK
```python
pip install composio_openai
```

```typescript
npm install @composio/openai
```

#### Path 1, Step 2: Initialize Composio and Create Tool Router Session

Import and initialize Composio client, then create a Tool Router session
```python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
```

```typescript
import OpenAI from 'openai';
import { Composio } from '@composio/core';
import { OpenAIResponsesProvider } from '@composio/openai';

const composio = new Composio({
  provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');
```

#### Path 1, Step 3: Execute Brex Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute Brex actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'Generate my latest account statement from Brex'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
```

```typescript
const tools = session.tools;
const response = await openai.responses.create({
  model: 'gpt-4.1',
  tools: tools,
  input: [{
    role: 'user',
    content: 'Generate my latest account statement from Brex'
  }],
});
const result = await composio.provider.handleToolCalls(
  'your-user-id',
  response.output
);
console.log(result);
```

### Path 2: MCP Server Setup

#### Path 2, Step 1: Install Composio

Install the Composio SDK and Claude Agent SDK
```python
pip install composio claude-agent-sdk
```

```typescript
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcp
```

#### Path 2, Step 2: Create Tool Router Session

Initialize the Composio client and create a Tool Router session
```python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
```

```typescript
import { Composio } from '@composio/core';

const composio = new Composio({ apiKey: 'your-api-key' });

console.log("Creating Tool Router session...");
const { mcp } = await composio.create('your-user-id');
console.log(`Tool Router session created: ${mcp.url}`);
```

#### Path 2, Step 3: Connect to AI Agent

Use the MCP server with your AI agent
```python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to Brex tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Get account statements for last month')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText, stepCountIs } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: mcp.url,
    headers: { 'x-api-key': 'your-composio-api-key' }
  }
});

const tools = await client.tools();

const { text } = await generateText({
  model: openai('gpt-4o'),
  tools,
  messages: [{ role: 'user', content: 'Get account statements for last month' }],
  stopWhen: stepCountIs( 5 )
});

console.log(`Agent: ${text}`);
```

## Why Use Composio?

### 1. AI Native Brex Integration

- Supports both Brex MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for reading, writing, and querying your Brex data

### 2. Managed Auth

- Built-in OAuth handling with automatic token refresh and rotation
- Central place to manage, scope, and revoke Brex access
- Per user and per environment credentials instead of hard-coded keys

### 3. Agent Optimized Design

- Tools are tuned using real error and success rates to improve reliability over time
- Comprehensive execution logs so you always know what ran, when, and on whose behalf

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access Brex
- Scoped, least privilege access to Brex resources
- Full audit trail of agent actions to support review and compliance

## Use Brex with any AI Agent Framework

Choose a framework you want to connect Brex with:

- [OpenAI Agents SDK](https://composio.dev/toolkits/brex/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/brex/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/brex/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/brex/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/brex/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/brex/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/brex/framework/hermes-agent)
- [Google ADK](https://composio.dev/toolkits/brex/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/brex/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/brex/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/brex/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/brex/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/brex/framework/crew-ai)
- [Pydantic AI](https://composio.dev/toolkits/brex/framework/pydantic-ai)
- [AutoGen](https://composio.dev/toolkits/brex/framework/autogen)

## Related Toolkits

- [Stripe](https://composio.dev/toolkits/stripe) - Stripe is a global online payments platform offering APIs for managing payments, customers, and subscriptions. Trusted by businesses for secure, efficient, and scalable payment processing worldwide.
- [Alpha vantage](https://composio.dev/toolkits/alpha_vantage) - Alpha Vantage is a financial data platform offering real-time and historical stock market APIs. Get instant, reliable access to equities, forex, and technical analysis data for smarter trading decisions.
- [Altoviz](https://composio.dev/toolkits/altoviz) - Altoviz is a cloud-based billing and invoicing platform for businesses. It streamlines online payments, expense tracking, and customizable invoice management.
- [Benzinga](https://composio.dev/toolkits/benzinga) - Benzinga provides real-time financial news and data APIs for market coverage. It helps you track breaking news and actionable market insights instantly.
- [Chaser](https://composio.dev/toolkits/chaser) - Chaser is accounts receivable automation software that sends invoice reminders and helps businesses get paid faster. It streamlines the collections process to save time and improve cash flow.
- [Clientary](https://composio.dev/toolkits/clientary) - Clientary is a platform for managing clients, invoices, projects, proposals, and more. It streamlines client work and saves you serious admin time.
- [Coinbase](https://composio.dev/toolkits/coinbase) - Coinbase is a platform for buying, selling, and storing cryptocurrency. It makes exchanging and managing crypto simple and secure for everyone.
- [Coinranking](https://composio.dev/toolkits/coinranking) - Coinranking is a comprehensive cryptocurrency market data platform offering access to real-time coin prices, market caps, and historical data. Get accurate, up-to-date stats for thousands of digital assets in one place.
- [Coupa](https://composio.dev/toolkits/coupa) - Coupa is a business spend management platform for procurement, invoicing, and expenses. It helps organizations streamline purchasing, control costs, and gain complete visibility over financial operations.
- [CurrencyScoop](https://composio.dev/toolkits/currencyscoop) - CurrencyScoop is a developer-friendly API for real-time and historical currency exchange rates. Easily access fiat and crypto data for smart, up-to-date financial applications.
- [Daffy](https://composio.dev/toolkits/daffy) - Daffy is a modern charitable giving platform with a donor-advised fund. Easily set aside funds, grow them tax-free, and donate to over 1.7 million U.S. charities.
- [Eagle doc](https://composio.dev/toolkits/eagle_doc) - Eagle doc is an AI-powered OCR API for invoices and receipts. It delivers fast, reliable, and accurate document data extraction for seamless automation.
- [Elorus](https://composio.dev/toolkits/elorus) - Elorus is an online invoicing and time-tracking software for freelancers and small businesses. Easily manage finances, bill clients, and track work in one place.
- [Eodhd apis](https://composio.dev/toolkits/eodhd_apis) - Eodhd apis delivers comprehensive financial data, including live and historical stock prices, via robust APIs. Easily access reliable, up-to-date market insights to power your apps, dashboards, and analytics.
- [Fidel api](https://composio.dev/toolkits/fidel_api) - Fidel api is a secure platform for linking payment cards to web and mobile apps. It enables real-time card transaction monitoring and event-based automation for businesses.
- [Finage](https://composio.dev/toolkits/finage) - Finage is a secure API platform delivering real-time and historical financial data for stocks, forex, crypto, indices, and commodities. It empowers developers and businesses to access, analyze, and act on market data instantly.
- [Finmei](https://composio.dev/toolkits/finmei) - Finmei is an invoicing tool that simplifies billing, invoice management, and expense tracking. Ideal for automating and organizing your business finances in one place.
- [Fixer](https://composio.dev/toolkits/fixer) - Fixer is a currency data API offering real-time and historical exchange rates for 170 currencies. Instantly access accurate, up-to-date forex data for your applications and workflows.
- [Fixer io](https://composio.dev/toolkits/fixer_io) - Fixer.io is a lightweight API for real-time and historical foreign exchange rates. It makes global currency conversion fast, accurate, and hassle-free.
- [Flutterwave](https://composio.dev/toolkits/flutterwave) - Flutterwave is a global payments platform enabling businesses to accept and send payments across Africa and beyond. Its robust APIs simplify cross-border transactions and financial operations.

## Frequently Asked Questions

### Do I need my own developer credentials to use Brex with Composio?

Yes, Brex requires you to configure your own OAuth credentials. Once set up, Composio handles token storage, refresh, and lifecycle management for you.

### Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. [Learn more](https://docs.composio.dev/tool-router/overview).

### Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. [Learn more](https://trust.composio.dev).

### What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)