Brex MCP Server

A Model Context Protocol (MCP) server for the Brex API. Optimized for safe, small, read-only responses with projection and batching.

Local serverstdioMIT

What is the Brex MCP Server?

Brex MCP Server is an MCP project maintained in the crazyrabbitltc/mcp-brex-server repository. The maintainer describes its purpose as “A Model Context Protocol (MCP) server for the Brex API. Optimized for safe, small, read-only responses with projection and batching”. Read the project documentation for the complete scope.

Installation

The documented npm package is mcp-brex. The configuration below comes from the maintainer’s example; adapt its paths and account values to your environment.

Configuration values

The example declares BREX_API_KEY. Secret-looking values have been replaced with placeholders. Required and optional labels are shown only when the documentation states them.

Source

Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
Budgets	get_budgets, get_budget
Expenses	paginated): get_all_expenses, get_all_card_expenses
Transactions	get_card_transactions, get_cash_transactions
Accounts	get_all_accounts, get_account_details
Receipts	write): match_receipt, upload_receipt
Updates	write): update_expense

How to install the Brex MCP Server

{
  "mcpServers": {
    "brex": {
      "command": "npx",
      "args": [
        "mcp-brex"
      ],
      "env": {
        "BREX_API_KEY": "YOUR_BREX_API_KEY"
      }
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.