Unify Chat Provider

A VS Code extension that allows you to integrate multiple LLM API providers into VS Code's Language Model Chat Provider API. Configure any number of API endpoints and use them seamlessly with GitHub Copilot Chat.

Supported API Formats

More API formats will be added in future releases.

Features

• Register multiple LLM API endpoints as language model providers
• Support for different API formats
• Multiple providers and models per provider
• Streaming responses with proper cancellation handling
• Tool calling support
• Token counting estimation
• Interactive commands to add and manage providers

Configuration

Add providers to your workspace settings (.vscode/settings.json) using the unifyChatProvider.endpoints array:

{
  "unifyChatProvider.endpoints": [
    {
      "type": "anthropic",
      "name": "Anthropic",
      "baseUrl": "https://api.anthropic.com",
      "apiKey": "your-api-key",
      "models": ["claude-sonnet-4-20250514", "claude-opus-4-20250514"]
    },
    {
      "type": "anthropic",
      "name": "OpenRouter",
      "baseUrl": "https://openrouter.ai/api",
      "apiKey": "your-openrouter-key",
      "models": ["anthropic/claude-sonnet-4", "anthropic/claude-opus-4"]
    }
  ]
}

Verbose Logging

By default only errors and failed requests are logged. Set unifyChatProvider.verbose to true to log full request and response details:

{
  "unifyChatProvider.verbose": true
}

Model Configuration

Models can be specified as simple strings or as objects with additional configuration:

{
  "unifyChatProvider.endpoints": [
    {
      "type": "anthropic",
      "name": "Custom Provider",
      "baseUrl": "https://api.example.com",
      "apiKey": "your-api-key",
      "models": [
        {
          "id": "model-a",
          "name": "Model A (Display Name)",
          "maxInputTokens": 200000,
          "maxOutputTokens": 8192
        },
        "model-b"
      ]
    }
  ]
}

Provider Configuration Properties

Commands

• Unify Chat Provider: Add Provider - Interactive wizard to add a new provider
• Unify Chat Provider: Remove Provider - Remove a configured provider
• Unify Chat Provider: Manage Providers - Open settings to manage providers

API Compatibility

Anthropic Format (type: "anthropic")

Compatible with APIs that follow the Anthropic Messages API format:

• Endpoint: POST to <baseUrl>/v1/messages
• Authentication: x-api-key header
• API Version: anthropic-version: 2023-06-01
• Request format: Anthropic Messages API
• Response format: Server-Sent Events (SSE) streaming

This includes:

• Anthropic's official API
• AWS Bedrock (with Anthropic gateway)
• Google Vertex AI (with Anthropic gateway)
• OpenRouter
• Other Anthropic-compatible proxies and gateways

Development

• Build: npm run compile
• Watch: npm run watch

License

MIT