Building a Production-Grade MCP Server with JWT Auth and Role-Based Tool Access

Figure: Production-Grade MCP Server with JWT Auth and Role-Based Tool Access How I designed a secure, multi-tenant Model Context Protocol server that gives every user role exactly the tools they need - nothing more, nothing less Most MCP tutorials show you how to wire up a tool and call it from Claude. That is fine for a weekend experiment. But when you are building MCP into a real enterprise system, one with HR data, procurement approvals, financial records, and five distinct user roles - “wire up a tool” is nowhere near enough.