Per User OAuth in a Next.js MCP Server (Step by Step)
This article details how to implement per-user OAuth in a Next.js MCP (Multi-Context Processing) server, addressing the security risks of using a single API key for all users. It explains how to leverage NextAuth to store individual user OAuth access tokens within session cookies. A Next.js Route Handler then acts as the MCP transport, reading the user's session and passing their unique token to the MCP tool context via closure, ensuring each tool call is scoped to the authenticated user's credentials. AI
IMPACT Enables more secure and scalable multi-user applications by managing individual API credentials.