What authentication standards does this skill support?

The skill follows the official MCP Authorization Specification, focusing on OAuth 2.1 with PKCE for secure, modern authentication.

How does it handle tool-specific permissions?

It provides a mapping system to associate specific MCP tools with required OAuth scopes, ensuring users can only trigger actions they are authorized for.

Does this skill handle token verification?

Yes, it includes implementation patterns for verifying JWTs using JWKS (JSON Web Key Sets) rather than hardcoded secrets for maximum security.

Can I use providers other than Auth0?

Yes. While it provides optimized workflows for Auth0 and Supabase, the patterns can be adapted for any custom OAuth 2.1 compliant provider.

MCP Authentication Builder

Name: MCP Authentication Builder
Author: hollaugo

byhollaugo

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セキュリティとテスト

Integrates OAuth 2.1 authentication and granular scope-based permissions into Model Context Protocol (MCP) servers.

This skill streamlines the process of securing MCP servers by implementing the official MCP Authorization Specification. It guides developers through setting up OAuth 2.1 with PKCE, configuring identity providers like Auth0 or Supabase, and implementing critical security features such as JWT verification via JWKS, tool-level scope enforcement, and user-specific data isolation. It is an essential tool for developers building production-ready MCP integrations that require multi-tenant support or access to sensitive, user-specific information.

主な機能

01OAuth 2.1 with PKCE implementation for secure delegated access

02Secure token verification using JSON Web Key Sets (JWKS)

03Pre-configured workflows for Auth0 and Supabase Auth integration

04Granular, tool-level scope and permission management

05Standardized WWW-Authenticate challenge and metadata endpoint setup

061 GitHub stars

ユースケース

01Building MCP tools that access private user data in external databases

02Securing action-oriented tools with audit logging and user identity tracking

03Implementing multi-tenant SaaS integrations within the Claude environment

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add hollaugo/prompt-circle-marketplace add-auth

For use in Claude.ai and ChatGPT

Download Skill