Roo Code

Set up Roo Code VS Code extension with Extend Proxy

Roo Code Setup

Roo Code (formerly Roo Cline) is a VS Code extension that provides AI-powered autonomous coding assistance.

Prerequisites

• VS Code installed
• Roo Code extension installed from VS Code Marketplace
• Your API key and endpoint URL from admin

Setup

1. Open Roo Code Settings

   1. Open VS Code
   2. Press Cmd+Shift+P (Mac) or Ctrl+Shift+P (Windows)
   3. Type “Roo Code: Open Settings”
2. Configure Provider

   Setting	Value
   API Provider	OpenAI Compatible
   Base URL	https://gateway.classicgroup.asia/v1
   API Key	Your API key
   Model ID	claude-opus-4-5-20250514

   Select “OpenAI Compatible” as the provider - this is the most reliable method.

   The Base URL must include /v1 at the end.
3. Disable Extended Thinking

   If you see errors about “Invalid signature in thinking block”:

   1. In Roo Code settings, find Extended Thinking option
   2. Disable it / toggle it off
   3. Start a new chat (don’t continue the old one)
4. Test

   Type a message in Roo Code to verify it works.

Available Models

Model ID	Description
claude-opus-4-5-20250514	Most capable, complex tasks
claude-sonnet-4-5-20250514	Fast, great for coding

Troubleshooting

Invalid signature in thinking block

This error occurs when Extended Thinking is enabled:

• Disable Extended Thinking in Roo Code settings
• Start a new chat session

405 Method Not Allowed

• Use “OpenAI Compatible” provider, not “Anthropic”
• Make sure Base URL ends with /v1

Invalid API key

• Double-check your API key
• Make sure there are no extra spaces

Model not found

• Use exact model IDs: claude-opus-4-5-20250514 or claude-sonnet-4-5-20250514