Lunch Money MCP Server

<div align="center"> # Specification <br/> Tech Stack _Standardized technology choices for consistent, fast development optimized for Y Combinator speed and TypeScript safety_ </div> --- ## Architecture ```mermaid graph LR BUN[bun] --> INDEX[src/index.ts] ``` ## Table of Contents - [Architecture](#architecture) - [Runtime](#runtime) - [Packages](#packages) - [Testing](#testing) - [Configuration](#configuration) - [File Standards](#file-standards) ## Runtime **bun** - Fast TypeScript runtime, package manager, and test runner **Why**: 3-5x faster than Node.js, native TypeScript support, unified toolchain ## Packages | Package | Purpose | | --------------------------- | -------------------- | | `@modelcontextprotocol/sdk` | MCP server framework | | `axios` | HTTP client | | `zod` | Schema validation | ## Testing **bun test** - Built-in test runner with Jest-compatible API **File Organization:** - `src/utils.ts` → `src/utils.test.ts` (alongside source) - `src/tools/handler.ts` → `src/tools/handler.test.ts` (alongside source) - No `__tests__` folders - keep tests next to source files Follow patterns from `@rules/test.spec.md`