Brex Integration for AI Agents

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.
BOOK A CALLGET STARTED FOR FREE
Brex Logo
Gradient Top
Gradient Middle
Gradient Bottom
divider

Supported Tools

Tools
Create BudgetCreate a new budget for departments or projects.
Create CardCreate a new card and assign it to a user.
Create DepartmentCreate a new department.
Create ExpenseCreate a new expense.
Create LocationCreate a new location.
Create Job TitleCreate a new job title.
Create UserCreate a new user in the brex account.
Create Vendor CardCreate a new vendor card.
Get Account DetailsGet details about the current brex account.
Get Account StatementsGet account statements.
Get Budget DetailsGet detailed information about a specific budget.
Get Budget TransactionsGet transactions for a specific budget.
Get Card DetailsGet detailed information about a specific card.
Get Card TransactionsGet card transactions for a date range.
Get Company Cash AccountsGet company cash accounts.
Get Expense DetailsGet details of a specific expense.
Get ExpensesGet expenses for a date range.
Get Spend LimitsGet spend limits configuration.
Get Transaction by IDGet details of a specific transaction by id.
Get TransactionsGet transactions for a date range.
Get Transactions by Amount RangeGet transactions filtered by amount range.
Get Transactions by DescriptionGet transactions filtered by description text.
Get User ProfileGet user profile information for current or specified user.
List BudgetsList all budgets and show available amounts across all cards.
List CardsList all cards associated with the account.
List DepartmentsList all departments in the organization.
List LocationsList all locations in the organization.
List Job TitlesList all job titles in the organization.
List UsersList all users in the brex account.
List VendorsList all vendors.
Transfer CardTransfer a card to a different user.
Update BudgetUpdate budget details.
Update Card LimitsUpdate spending limits and controls for a card.
Update Card StatusUpdate the status of a card (activate/deactivate/terminate).
Update UserUpdate user details.

Why Use Composio?

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

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

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

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

Connect Brex MCP Tool with your Agent

Python
TypeScript

Install Composio

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

Create 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
Initialize the Composio client and create a Tool Router session

Connect to 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())
Use the MCP server with your AI agent

Connect Brex API Tool with your Agent

Python
TypeScript

Install Composio

python
pip install composio_openai
Install the Composio SDK

Initialize Composio and Create 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')
Import and initialize Composio client, then create a Tool Router session

Execute Brex Tools via Tool Router 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)
Get tools from Tool Router session and execute Brex actions with your Agent

Use Brex with any AI Agent Framework

Choose a Framework you want to connect Brex with

OpenAI Agents SDK

OpenAI Agents SDK

Use Brex MCP with OpenAI Agents SDK

Claude Agents SDK

Claude Agents SDK

Use Brex MCP with Claude Agents SDK

Google ADK

Google ADK

Use Brex MCP with Google ADK

Langchain

Langchain

Use Brex MCP with Langchain

AI SDK

AI SDK

Use Brex MCP with AI SDK

Mastra AI

Mastra AI

Use Brex MCP with Mastra AI

LlamaIndex

LlamaIndex

Use Brex MCP with LlamaIndex

CrewAI

CrewAI

Use Brex MCP with CrewAI

Pydantic AI

Pydantic AI

Use Brex MCP with Pydantic AI

Autogen

Autogen

Use Brex MCP with Autogen

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.

Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. Learn more.

What if the API changes?

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

Used by agents from

Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.

Book a call↗Get started for free