Imported from majiayu000/claude-skill-registry (skills/data/oauth-providers/SKILL.md). Install upstream with npx skills add majiayu000/claude-skill-registry --skill oauth-providers. Copyright stays with the author.

oauth-providers

Instructions

This skill provides complete OAuth provider configuration for Clerk-powered applications. It covers all 19+ supported OAuth providers with templates, setup scripts, testing utilities, and integration patterns for Next.js, React, and other frameworks.

Supported OAuth Providers

Tier 1 (Most Common):

• Google - Consumer apps, Google Workspace integration
• GitHub - Developer tools, technical audiences
• Discord - Gaming, community platforms
• Microsoft - Enterprise applications, Microsoft 365 integration

Tier 2 (Social & Professional):

• Facebook - Social applications, consumer products
• LinkedIn - Professional networks, B2B applications
• Twitter/X - Social media integration
• Apple - iOS applications, consumer products

Tier 3 (Specialized):

• GitLab - Developer platforms, CI/CD tools
• Bitbucket - Atlassian ecosystem integration
• Dropbox - File storage integration
• Notion - Productivity app integration
• Slack - Workspace collaboration
• Linear - Project management tools
• Coinbase - Crypto wallet authentication
• TikTok - Short-form video platforms
• Twitch - Live streaming platforms
• HubSpot - CRM integration
• X/Twitter - Social media (rebranded)

1. Provider Setup Script

Configure any OAuth provider with automated setup:

# Set up single provider
bash scripts/setup-provider.sh google

# Set up multiple providers
bash scripts/setup-provider.sh google github discord

# Interactive setup with prompts
bash scripts/setup-provider.sh --interactive

What the Script Does:

1. Detects Clerk project configuration
2. Generates provider-specific configuration
3. Creates redirect URLs for all environments (dev, staging, production)
4. Provides step-by-step setup instructions
5. Generates environment variable templates
6. Creates provider testing utilities

Output:

• Provider configuration JSON
• Environment variable template
• Setup instructions markdown
• Test credentials configuration

2. Generate Redirect URLs

Generate callback URLs for all environments:

# Generate for specific provider
bash scripts/generate-redirect-urls.sh google

# Generate for all configured providers
bash scripts/generate-redirect-urls.sh --all

# Export to environment file
bash scripts/generate-redirect-urls.sh google --export > .env.oauth

Redirect URL Patterns:

Development:
http://localhost:3000/api/auth/callback/google

Production:
https://yourdomain.com/api/auth/callback/google

Clerk Default:
https://your-clerk-domain.clerk.accounts.dev/v1/oauth_callback

3. Test OAuth Flow

Validate OAuth configuration end-to-end:

# Test single provider
bash scripts/test-oauth-flow.sh google

# Test all providers
bash scripts/test-oauth-flow.sh --all

# Generate test report
bash scripts/test-oauth-flow.sh google --report

Tests Performed:

• Provider configuration validation
• Redirect URL accessibility
• OAuth flow initiation
• Callback handling
• Token exchange validation
• User profile retrieval
• Error handling scenarios

4. Provider Templates

Access pre-configured templates for each provider:

Google OAuth:

// templates/google/clerk-config.ts
import { google } from '@clerk/clerk-sdk-node';

export const googleConfig = {
  clientId: process.env.GOOGLE_CLIENT_ID,
  clientSecret: process.env.GOOGLE_CLIENT_SECRET,
  redirectUri: process.env.GOOGLE_REDIRECT_URI,
  scopes: ['profile', 'email'],
  // Google-specific options
  accessType: 'offline',
  prompt: 'consent'
};

GitHub OAuth:

// templates/github/clerk-config.ts
export const githubConfig = {
  clientId: process.env.GITHUB_CLIENT_ID,
  clientSecret: process.env.GITHUB_CLIENT_SECRET,
  redirectUri: process.env.GITHUB_REDIRECT_URI,
  scopes: ['read:user', 'user:email'],
  // GitHub-specific options
  allowSignup: true
};

Discord OAuth:

// templates/discord/clerk-config.ts
export const discordConfig = {
  clientId: process.env.DISCORD_CLIENT_ID,
  clientSecret: process.env.DISCORD_CLIENT_SECRET,
  redirectUri: process.env.DISCORD_REDIRECT_URI,
  scopes: ['identify', 'email'],
  // Discord-specific options
  permissions: '0'
};

5. Multi-Provider Integration

React/Next.js Components:

// templates/oauth-shared/AuthButtons.tsx
import { SignIn } from '@clerk/nextjs';

export function AuthButtons() {
  return (
    <div className="auth-providers">
      <SignIn.Root>
        <SignIn.Step name="start">
          <div className="provider-buttons">
            <SignIn.Strategy name="oauth_google">
              <button>Continue with Google</button>
            </SignIn.Strategy>
            <SignIn.Strategy name="oauth_github">
              <button>Continue with GitHub</button>
            </SignIn.Strategy>
            <SignIn.Strategy name="oauth_discord">
              <button>Continue with Discord</button>
            </SignIn.Strategy>
          </div>
        </SignIn.Step>
      </SignIn.Root>
    </div>
  );
}

Clerk Dashboard Configuration:

// templates/oauth-shared/clerk-dashboard-config.ts
export const oauthProviders = [
  {
    provider: 'google',
    enabled: true,
    clientId: 'GOOGLE_CLIENT_ID',
    clientSecret: 'GOOGLE_CLIENT_SECRET',
    scopes: ['profile', 'email']
  },
  {
    provider: 'github',
    enabled: true,
    clientId: 'GITHUB_CLIENT_ID',
    clientSecret: 'GITHUB_CLIENT_SECRET',
    scopes: ['read:user', 'user:email']
  },
  {
    provider: 'discord',
    enabled: true,
    clientId: 'DISCORD_CLIENT_ID',
    clientSecret: 'DISCORD_CLIENT_SECRET',
    scopes: ['identify', 'email']
  }
];

Examples

Example 1: Google OAuth for SaaS Application

# 1. Set up Google OAuth
bash scripts/setup-provider.sh google

# Follow prompts:
# - Create OAuth app in Google Cloud Console
# - Configure authorized redirect URIs
# - Copy Client ID and Client Secret
# - Add to Clerk Dashboard

# 2. Generate redirect URLs
bash scripts/generate-redirect-urls.sh google --export > .env.google

# 3. Test OAuth flow
bash scripts/test-oauth-flow.sh google

# 4. Add to React app
cp templates/google/clerk-config.ts ./lib/auth/google.ts
cp templates/oauth-shared/AuthButtons.tsx ./components/auth/

Result: Fully configured Google OAuth with sign-in button and tested flow

Example 2: Multi-Provider Authentication (Google + GitHub + Discord)

# Set up all providers
for provider in google github discord; do
  bash scripts/setup-provider.sh $provider
done

# Generate all redirect URLs
bash scripts/generate-redirect-urls.sh --all --export > .env.oauth

# Test all providers
bash scripts/test-oauth-flow.sh --all --report

# Deploy multi-provider UI
cp templates/oauth-shared/AuthButtons.tsx ./components/auth/

Result: Users can sign in with Google, GitHub, or Discord

Example 3: Enterprise Application with Microsoft + LinkedIn

# Set up enterprise providers
bash scripts/setup-provider.sh microsoft linkedin

# Configure enterprise-specific scopes
# Edit templates/microsoft/clerk-config.ts to add Azure AD scopes
# Edit templates/linkedin/clerk-config.ts for LinkedIn API v2

# Test enterprise flows
bash scripts/test-oauth-flow.sh microsoft --report
bash scripts/test-oauth-flow.sh linkedin --report

Result: Enterprise authentication with Microsoft 365 and LinkedIn integration

Example 4: Gaming Platform with Discord + Twitch

# Set up gaming providers
bash scripts/setup-provider.sh discord twitch

# Configure gaming-specific permissions
# Discord: guild membership, voice state
# Twitch: user:read:email, channel subscriptions

# Test gaming provider flows
bash scripts/test-oauth-flow.sh discord twitch

Result: Gaming platform authentication with Discord and Twitch integration

Requirements

Environment Variables:

• CLERK_PUBLISHABLE_KEY - Clerk public key
• CLERK_SECRET_KEY - Clerk secret key
• Provider-specific credentials (e.g., GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET)

Dependencies:

• @clerk/clerk-sdk-node - Clerk Node.js SDK
• @clerk/nextjs - Clerk Next.js integration (for Next.js apps)
• @clerk/clerk-react - Clerk React components (for React apps)
• Node.js 18+ or compatible runtime
• jq (for JSON processing in scripts)

Clerk Project Setup:

• Active Clerk account (free tier available)
• Clerk application configured
• Development and production instances (optional)

For Each OAuth Provider:

• Developer account on provider platform
• OAuth application created
• Client credentials obtained
• Redirect URIs configured

Security: API Key Handling

CRITICAL: When generating any configuration files or code:

• NEVER hardcode actual API keys or secrets

• NEVER include real credentials in examples

• NEVER commit sensitive values to git

• ALWAYS use placeholders: your_service_key_here

• ALWAYS create .env.example with placeholders only

• ALWAYS add .env* to .gitignore (except .env.example)

• ALWAYS read from environment variables in code

• ALWAYS document where to obtain keys

Placeholder format: {provider}_{env}_your_key_here

Example:

# .env.example (safe to commit)
GOOGLE_CLIENT_ID=google_dev_your_client_id_here
GOOGLE_CLIENT_SECRET=google_dev_your_client_secret_here

# .env (NEVER commit)
GOOGLE_CLIENT_ID=actual_client_id_from_google_cloud
GOOGLE_CLIENT_SECRET=actual_secret_from_google_cloud

Provider-Specific Setup Guides

Google OAuth Setup

Documentation: templates/google/SETUP.md

1. Create project in Google Cloud Console
2. Enable Google+ API
3. Configure OAuth consent screen
4. Create OAuth 2.0 credentials
5. Add authorized redirect URIs
6. Copy Client ID and Client Secret
7. Add to Clerk Dashboard

Required Scopes:

• profile - User profile information
• email - Email address
• openid - OpenID Connect

GitHub OAuth Setup

Documentation: templates/github/SETUP.md

1. Navigate to GitHub Settings > Developer Settings
2. Create new OAuth App
3. Configure application name and homepage URL
4. Add authorization callback URL
5. Generate client secret
6. Add to Clerk Dashboard

Required Scopes:

• read:user - Read user profile
• user:email - Access user email addresses

Discord OAuth Setup

Documentation: templates/discord/SETUP.md

1. Create application in Discord Developer Portal
2. Navigate to OAuth2 section
3. Add redirect URIs
4. Copy Client ID and Client Secret
5. Configure bot permissions (if needed)
6. Add to Clerk Dashboard

Required Scopes:

• identify - User identity
• email - Email address
• guilds - Server list (optional)

Microsoft OAuth Setup

Documentation: templates/microsoft/SETUP.md

1. Register application in Azure AD Portal
2. Configure platform settings (Web)
3. Add redirect URIs
4. Generate client secret
5. Configure API permissions
6. Add to Clerk Dashboard

Required Scopes:

• openid - OpenID Connect
• profile - User profile
• email - Email address
• User.Read - Microsoft Graph API

Apple OAuth Setup

Documentation: templates/apple/SETUP.md

1. Create App ID in Apple Developer Portal
2. Enable Sign in with Apple capability
3. Create Service ID
4. Configure domains and redirect URLs
5. Create private key for authentication
6. Add to Clerk Dashboard

Required Scopes:

• name - User name
• email - Email address

Best Practices

Multi-Provider Strategy:

• Offer 2-3 primary providers (Google, GitHub, Discord)
• Add enterprise providers for B2B apps (Microsoft, LinkedIn)
• Include email/password as fallback option
• Test all providers regularly

Redirect URL Management:

• Use environment-specific URLs
• Whitelist exact URLs (no wildcards)
• Use HTTPS in production
• Document all redirect URLs

Scope Configuration:

• Request minimum necessary scopes
• Document why each scope is needed
• Handle scope changes gracefully
• Test with restricted scopes

Error Handling:

• Handle provider-specific errors
• Provide clear user feedback
• Log authentication failures
• Implement retry logic

Testing:

• Test all providers before launch
• Verify redirect URLs in all environments
• Test with fresh user accounts
• Validate token refresh flows

Security:

• Store credentials in environment variables
• Use HTTPS for all OAuth flows
• Implement CSRF protection
• Validate state parameter
• Rotate secrets periodically

Troubleshooting

Redirect URI Mismatch:

• Verify exact URL match in provider console
• Check for trailing slashes
• Validate protocol (http vs https)
• Confirm environment configuration

Invalid Client Credentials:

• Verify client ID and secret are correct
• Check for whitespace in credentials
• Ensure credentials match environment
• Regenerate if compromised

Scope Authorization Failed:

• Verify scopes are supported by provider
• Check provider API version
• Validate scope syntax
• Request app review if needed (some providers)

Token Exchange Error:

• Verify authorization code is valid
• Check token endpoint URL
• Validate code verifier (PKCE)
• Ensure timely token exchange

User Profile Retrieval Failed:

• Verify access token is valid
• Check profile endpoint permissions
• Validate scope for profile access
• Handle rate limits

Plugin: clerk Version: 1.0.0 Category: Authentication Skill Type: Configuration Providers Supported: 19+