Brex MCP Server

# Changelog All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). ## [0.2.0] - 2025-08-27 ### Fixed - **Response Size Issue**: Resolved critical issue where `limit=1` requests were returning 26K+ tokens instead of small responses - **Infinite Pagination Bug**: Fixed `get_all_expenses` tool that was making unlimited API calls when no `max_items` specified (changed default from `Infinity` to `100`) - **Card Transactions Expand Error**: Fixed 400 "Unsupported entity expansion" errors when using `expand=["merchant"]` parameter with `get_card_transactions` - **Account Details 403 Errors**: Implemented smart routing to handle both cash and card account IDs correctly - Cash accounts (`dpacc_*`): Use `/v2/accounts/cash/{id}` endpoint - Card accounts (`cuacc_*`): Use `/v2/accounts/card` list endpoint with filtering - **Forced Merchant Expansion**: Removed forced `expand=["merchant"]` parameter that was causing large responses - **Array Parameter Handling**: Fixed falsy array evaluation bug (`if (params.expand)` vs `if (params.expand !== undefined)`) ### Enhanced - **Account Management**: Both cash and card accounts now fully supported across all account-related tools - **Transaction Retrieval**: Smart routing for transaction endpoints based on account type - **Error Handling**: Improved error messages and handling for invalid account IDs - **Response Optimization**: All tools now return appropriately sized responses under token limits ### Changed - **Default Pagination**: `get_all_expenses` now defaults to maximum 100 items instead of unlimited - **API Endpoints**: Updated to use correct Brex API v2 endpoints for better compatibility - **Parameter Validation**: Enhanced validation for account IDs and expand parameters ### Technical - **API Client**: Completely refactored `BrexClient` class with smart routing logic - **Type Safety**: Improved TypeScript types and interfaces for better development experience - **Production Build**: Optimized production build with development files excluded ## [0.1.1] - Previous Version ### Added - Initial MCP server implementation for Brex API - Basic expense, budget, and transaction tools - Authentication and API key management