What is the primary purpose of this skill?

It provides a blueprint and implementation pattern for building secure Model Context Protocol (MCP) servers using the Express.js framework and Scalekit for OAuth 2.1 authentication.

How does it handle input validation?

The skill uses Zod schema validation to provide type-safe parameters, preventing malformed inputs from reaching your MCP tool handlers and improving overall system reliability.

Is this setup compatible with Vercel or AWS Lambda?

Yes, by configuring the MCP transport layer to be stateless, this integration is fully compatible with serverless environments and traditional containerized hosts.

Do I need a Scalekit account to use this?

Yes, this skill relies on the Scalekit Node SDK to handle token validation, JWKS key rotation, and secure issuer verification.

Can I integrate this into an existing Node.js project?

Absolutely. This pattern is designed to work with standard Express.js middleware, making it easy to add MCP functionality to established codebases without a complete rewrite.

Express.js MCP Auth Stack

Name: Express.js MCP Auth Stack
Author: scalekit-inc

byscalekit-inc

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API 개발

Simplifies the creation of production-grade Model Context Protocol (MCP) servers using Express.js and Scalekit OAuth 2.1 authentication.

This skill provides a standardized framework for developers to build secure, scalable MCP servers within the Node.js ecosystem. It bridges the gap between the Model Context Protocol and standard Express.js middleware, enabling fine-grained control over HTTP handling while implementing robust OAuth 2.1 token validation through Scalekit. It is ideal for teams needing to add secure AI tool capabilities to existing Express applications or those requiring advanced request logic like rate limiting, custom logging, and type-safe schema validation.

주요 기능

01Seamless integration of MCP SDK with Express.js middleware chains

02Automatic OAuth resource discovery via well-known metadata endpoints

03Stateless transport design optimized for serverless and container deployments

04Type-safe tool input validation using Zod schemas for runtime security

05Production-ready OAuth 2.1 Bearer token validation via Scalekit SDK

060 GitHub stars

사용 사례

01Building scalable, multi-tenant MCP servers with custom middleware logic

02Securing AI-powered internal tools with enterprise-grade authentication

03Adding MCP capabilities to established Express.js backend architectures

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add scalekit-inc/claude-code-authstack express-mcp-server

For use in Claude.ai and ChatGPT

Download Skill