How to Use the AllRatesToday MCP Server with Claude Code and Cursor

How to Use the AllRatesToday MCP Server with Claude Code and Cursor AI coding tools are great at writing code and explaining diffs, but they're unreliable at anything numeric and time-sensitive. Ask Claude Code "what's today's USD to EUR rate?" and you'll get a stale guess. The Model Context Protocol (MCP) fixes this by letting clients call real tools. This post walks through the AllRatesToday MCP server — what it does, how to install it in four different clients, and how to debug when something