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Visual Studio Extensions

Visual Studio 2022

The latest and most feature-complete version of the extension with enhanced performance and the newest Visual Studio integration features.

Key Features:

• Full support for all 6 code generators (NSwag, OpenAPI Generator, Kiota, Refitter, Swagger Codegen CLI, AutoRest)
• Latest Visual Studio integration APIs
• Enhanced performance and stability
• Modern UI and improved user experience
• Advanced configuration options

Visual Studio 2019

Stable version with all core features, perfect for teams still using Visual Studio 2019.

Visual Studio 2017

Legacy support for older Visual Studio installations that still need modern API client generation capabilities.

Installation from Visual Studio

1. Open Visual Studio
2. Go to Extensions → Manage Extensions
3. Search for "REST API Client Code Generator"
4. Click Download and restart Visual Studio

Visual Studio Code

Cross-platform extension for VS Code with context menu integration for JSON and YAML files.

VS Code command palette integration for quick access

Manual Installation for VS Code

1. Download the VSIX file from the GitHub releases page
2. Open VS Code
3. Go to Extensions view (Ctrl+Shift+X)
4. Click on the "..." menu in the top right corner
5. Select "Install from VSIX..."
6. Select the downloaded .vsix file

Context menu for C# code generation in VS Code

TypeScript code generation support in VS Code

Visual Studio for Mac

Complete feature parity with Windows Visual Studio, supporting all code generators and configuration options.

Visual Studio for Mac integration with native "Add New" menu

Option 1: Extension Repository (Recommended)

1. Open Visual Studio for Mac Extension Manager
2. Go to Visual Studio → Extensions
3. Select the Gallery tab
4. Expand the Repository dropdown and select Manage Repositories
5. Press Add and register: https://christianhelle.com/vsmac/main.mrep
6. Install from the Gallery tab

Opening the Extensions Manager in Visual Studio for Mac

Managing extension repositories

Adding the custom extension repository

Option 2: Direct Installation

1. Download the latest .mpack file from GitHub Releases
2. Open Visual Studio for Mac
3. Go to Visual Studio → Extensions
4. Click Install from File
5. Browse to and select the .mpack file
6. Click Install and restart Visual Studio for Mac

Installing extension from .mpack file

Installation confirmation dialog

VS Mac Usage Examples

OpenAPI specification configuration dialog on macOS

Code generation context menu options

NSwag Studio integration on macOS

Command Line Tool

Cross-platform CLI tool perfect for automation, CI/CD scenarios, and developers who prefer command-line workflows.

dotnet tool install --global rapicgen

Installation

Install as a .NET global tool:

dotnet tool install --global rapicgen

dotnet tool update --global rapicgen

dotnet tool install --global rapicgen --version 1.28.0

NuGet Package

Installation Requirements

For Visual Studio Extensions

For VS Code Extension

For Command Line Tool

Installation Tips and Best Practices

Corporate Environment Setup

1. Java Configuration - Set JAVA_HOME environment variable or configure in extension settings
2. NPM Proxy Setup - Configure NPM for corporate proxies: npm config set proxy http://proxy:port
3. Firewall Rules - Allow downloads from GitHub, NPM registry, and Maven central
4. JAR File Caching - Pre-download JAR files to shared locations if needed

Verification Steps

After installation, verify everything works correctly:

# Verify rapicgen is installed
rapicgen --help

# Test with Swagger Petstore
curl https://petstore.swagger.io/v2/swagger.json -o swagger.json
rapicgen csharp nswag swagger.json PetStore.Client ./test.cs

Getting Started After Installation

1. Restart your IDE to ensure the extension is properly loaded
2. Test with a sample API using the Swagger Petstore (https://petstore.swagger.io/v2/swagger.json)
3. Configure your preferences in the Tools → REST API Client Code Generator settings
4. Add your first REST API Client to a project
5. Explore the context menus for advanced features

Troubleshooting Installation Issues

Common Issues and Solutions

Support and Updates

• Check the GitHub Issues page for common problems and solutions
• Review the comprehensive README for detailed documentation
• Submit new issues with installation details if you encounter problems
• Star the repository to stay updated on new releases