VsAgentic

An agentic AI coding assistant for Visual Studio 2026 — chat with Claude to explore, understand, and modify your codebase, powered by the Claude Code CLI and your Claude subscription.

⭐ If VsAgentic saves you time, please consider giving it a star — it helps others discover the extension and motivates continued development!

✨ Features

🤖 Powered by Claude Code CLI

VsAgentic uses the Claude Code CLI as its backend, leveraging your Claude subscription (Pro/Max) to understand your questions and act on your codebase — not just answer them. The CLI handles model selection, tool execution, and all agentic capabilities natively.

⚙️ Configurable Settings

Settings are available in the Visual Studio Tools → Options → VsAgentic dialog:

• Claude CLI Path — path to the claude executable (defaults to claude on PATH)
• CLI Permission Mode — controls how the CLI handles tool permissions

🧰 Built-in Agentic Tools

Claude Code comes with a full suite of agentic tools — file search, code search, file reading/editing, bash commands, web fetching, and sub-agent delegation. The CLI manages all tools natively; VsAgentic displays tool steps inline so you can follow every action.

💬 Persistent Chat Sessions

• Sessions are saved per-workspace under %AppData%\VsAgentic\workspaces\
• Conversation history is fully restored when you reopen VS
• Auto-generated session titles based on your first message
• Manage sessions from the VsAgentic Sessions panel (open, rename, delete)

🖼️ Rich Markdown Rendering

Responses are rendered with full Markdown support — syntax-highlighted code blocks, tables, lists, and inline formatting — via an embedded WebView2 control.

🪟 Multi-Window Support

• Open multiple chat sessions simultaneously as floating or docked tool windows
• Each session maintains its own independent conversation history and AI context

📋 Requirements

• Visual Studio 2026 version 17.14 or later (Community, Professional, or Enterprise)
• Windows x64 (amd64)
• Node.js (v18 or later) — required to install the Claude Code CLI
• An active Claude Pro or Max subscription — VsAgentic uses the Claude Code CLI which requires a paid Claude subscription. API keys are not supported.

🚀 Installation

Option 1 — Visual Studio Marketplace (recommended)

1. Visit the VsAgentic page on the Visual Studio Marketplace
2. Click Install and follow the prompts
3. Or, open Visual Studio 2026, go to Extensions → Manage Extensions, search for VsAgentic, click Download and restart Visual Studio

Option 2 — Manual VSIX install

1. Download the latest .vsix file from the Releases page
2. Double-click the .vsix file to launch the VSIX Installer
3. Follow the prompts and restart Visual Studio

⚙️ Setup

1. Install the Claude Code CLI

Follow the official Claude Code installation guide or run:

npm install -g @anthropic-ai/claude-code

2. Log in with your Claude subscription

Open a terminal (PowerShell or Command Prompt) and run:

claude login

This will open your browser to authenticate with your Claude account. You need an active Pro or Max subscription.

For detailed instructions, see the official Claude Code authentication docs.

3. Verify the CLI works

claude -p "hello"

If you see a response from Claude, you're all set.

4. Configure VsAgentic (optional)

• If claude is not on your PATH, go to Tools → Options → VsAgentic → General and set Claude CLI Path to the full path (e.g. C:\Users\<you>\AppData\Roaming\npm\claude.cmd)

Open VsAgentic

Go to View → Other Windows → VsAgentic to open a new chat session.

A VsAgentic Sessions panel will also appear (docked next to Solution Explorer by default) where you can manage all your conversations.

Troubleshooting

🎮 Usage

1. Open a solution — VsAgentic automatically scopes all file operations to your solution's root directory.
2. Type a message in the chat input and press Enter or click Send.
3. Watch Claude work — tool calls are shown inline as expandable steps so you can follow every action.

Example prompts

Explain how the authentication flow works in this codebase.

Find all places where we catch exceptions without logging them.

Refactor the UserService to use dependency injection instead of static methods.

Add XML documentation comments to all public methods in IOrderRepository.cs

Run the unit tests and fix any failures you find.

🗂️ Project Structure

VsAgentic.sln
├── VsAgentic.VSExtension/   # VSIX entry point — commands, tool windows, package bootstrap
├── VsAgentic.UI/            # Shared WPF controls, ViewModels, Markdown renderer (WebView2)
├── VsAgentic.Services/      # Core service layer — CLI integration, session store
├── VsAgentic.Desktop/       # Standalone WPF desktop app (for development & testing)
└── VsAgentic.Console/       # Console host (for development & testing)

🔒 Privacy & Security

• Your code is sent to Anthropic via the Claude Code CLI to fulfill requests. Review Anthropic's privacy policy before use on sensitive or proprietary codebases.
• No API keys are stored or required. Authentication is handled entirely by the Claude Code CLI via your Claude subscription.
• Session history (messages) is stored locally in %AppData%\VsAgentic\ and never leaves your machine.

🐛 Known Limitations

• Currently supports Visual Studio 2026 (17.14+) only — VS Code and Rider are not yet supported.
• The extension targets x64 Windows only.

💬 Feedback & Support

Your feedback makes VsAgentic better! Here's how to get involved:

• 🐛 Found a bug? Open an issue
• 💡 Have a feature idea? Start a discussion
• ⭐ Enjoying the extension? A star on GitHub goes a long way — thank you!
• 🗳️ Marketplace review — Leaving a review on the Visual Studio Marketplace helps other developers discover VsAgentic.

📄 License

This project is licensed under the MIT License.

Built with ❤️ for Visual Studio developers  |  Powered by Anthropic Claude