Why Use Custom OAuth Credentials | Registering a Meetup OAuth Application | Step 1: Create the OAuth App | Step 2: Note Your Credentials | Storing Custom Credentials | Storing Credentials in your environment | Verifying Stored Credentials | Authenticating with Custom Credentials | Using a Custom Client Name | Supported Keys | 1. JWT Flow (Meetup Pro accounts) | 2. Encrypted OAuth Token File (for CI/CD) | Setting Up Encrypted Token Authentication | Rotating an Encrypted Token in GitHub Actions | 3. OAuth2 Interactive Flow | How Authentication is Chosen

Overview | When to Use Custom Queries | Using extra_graphql in Wrapper Functions | Working with Nested Data | Handling One-to-Many Relationships | Custom Queries from Scratch | Executing Custom Queries | Understanding Pagination | Automatic Pagination in Wrapper Functions | Understanding the Template System | Creating Custom Extractors | Error Handling | Performance Best Practices | Request Only Needed Fields | Batch Queries Efficiently | Monitor Rate Limits | Use Pagination Wisely | Additional Resources | Official Documentation | Related Vignettes | Getting Help

Introduction to GraphQL Introspection | Why Use Introspection? | How GraphQL Schema Works | Recommended Exploration Workflow | The meetupr_schema_* Function Family | Performance Tip: Cache the Schema | Step-by-Step Exploration Workflow | Step 1: Identify Available Entry Points | Step 2: Search for Relevant Types | Step 3: Examine Type Fields | Step 4: Build Your Custom Query | Step 5: Execute Your Query | Working with Mutations | Discovering Available Mutations | Understanding Mutation Structure | Example: RSVP to an Event | Advanced Introspection Patterns | Exploring Enum Values | Finding Required vs. Optional Fields | Discovering Input Types for Mutations | Understanding Pagination Types | Exporting Schema for External Tools | Practical Tips and Workflow | Use the Meetup API Playground | Use Debug Mode | Next Steps

Quick Setup Check | Authentication | Interactive Authentication | Non-Interactive Authentication (CI/CD) | Verification | Basic Usage Examples | Get Group Information | List Group Events | Get Past Events | Filter Events by Date | Get Event Details | Get Event RSVPs | Get Group Members | Search for Groups | Pagination and Rate Limits | Pro Account Features | List All Pro Groups | Network-Wide Events | Debug Mode | Common Issues | Authentication Errors | Multiple Token Warning | Rate Limiting | Group Not Found | Next Steps | Getting Help

Background | Software requirements and installation | Setup dataset | Review available models | Fit individual models | Fit multiple models | Predict on new data | Fit ensemble with external cross-validation | Customize a model hyperparameter | Test algorithm with multiple hyperparameter settings | Multicore parallelization | Weight distribution for SuperLearner | Feature selection (screening) | Optimize for AUC | XGBoost hyperparameter exploration | Troubleshooting | References