claude-code-router

![](blog/images/claude-code-router-img.png)

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<hr>

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> This project is sponsored by Z.ai, supporting us with their GLM CODING PLAN.

> GLM CODING PLAN is a subscription service designed for AI coding, starting at just $10/month. It provides access to their flagship GLM-4.7 & （GLM-5 Only Available  for Pro Users）model across 10+ popular AI coding tools (Claude Code, Cline, Roo Code, etc.), offering developers top-tier, fast, and stable coding experiences.

> Get 10% OFF GLM CODING PLAN：https://z.ai/subscribe?ic=8JVLJQFSKB  

> [Progressive Disclosure of Agent Tools from the Perspective of CLI Tool Style](/blog/en/progressive-disclosure-of-agent-tools-from-the-perspective-of-cli-tool-style.md)

> A powerful tool to route Claude Code requests to different models and customize any request.

![](blog/images/claude-code.png)

## ✨ Features

- **Model Routing**: Route requests to different models based on your needs (e.g., background tasks, thinking, long context).
- **Multi-Provider Support**: Supports various model providers like OpenRouter, DeepSeek, Ollama, Gemini, Volcengine, and SiliconFlow.
- **Request/Response Transformation**: Customize requests and responses for different providers using transformers.
- **Dynamic Model Switching**: Switch models on-the-fly within Claude Code using the `/model` command.
- **CLI Model Management**: Manage models and providers directly from the terminal with `ccr model`.
- **GitHub Actions Integration**: Trigger Claude Code tasks in your GitHub workflows.
- **Plugin System**: Extend functionality with custom transformers.

## 🚀 Getting Started

### 1. Installation

First, ensure you have [Claude Code](https://docs.anthropic.com/en/docs/claude-code/quickstart) installed:

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

Then, install Claude Code Router:

```shell
npm install -g @musistudio/claude-code-router
```

### 2. Configuration

Create and configure your `~/.claude-code-router/config.json` file. For more details, you can refer to `config.example.json`.

The `config.json` file has several key sections:

- **`PROXY_URL`** (optional): You can set a proxy for API requests, for example: `"PROXY_URL": "http://127.0.0.1:7890"`.
- **`LOG`** (optional): You can enable logging by setting it to `true`. When set to `false`, no log files will be created. Default is `true`.
- **`LOG_LEVEL`** (optional): Set the logging level. Available options are: `"fatal"`, `"error"`, `"warn"`, `"info"`, `"debug"`, `"trace"`. Default is `"debug"`.
- **Logging Systems**: The Claude Code Router uses two separate logging systems:
  - **Server-level logs**: HTTP requests, API calls, and server events are logged using pino in the `~/.claude-code-router/logs/` directory with filenames like `ccr-*.log`
  - **Application-level logs**: Routing decisions and business logic events are logged in `~/.claude-code-router/claude-code-router.log`
- **`APIKEY`** (optional): You can set a secret key to authenticate requests. When set, clients must provide this key in the `Authorization` header (e.g., `Bearer your-secret-key`) or the `x-api-key` header. Example: `"APIKEY": "your-secret-key"`.
- **`HOST`** (optional): You can set the host address for the server. If `APIKEY` is not set, the host will be forced to `127.0.0.1` for security reasons to prevent unauthorized access. Example: `"HOST": "0.0.0.0"`.
- **`NON_INTERACTIVE_MODE`** (optional): When set to `true`, enables compatibility with non-interactive environments like GitHub Actions, Docker containers, or other CI/CD systems. This sets appropriate environment variables (`CI=true`, `FORCE_COLOR=0`, etc.) and configures stdin handling to prevent the process from hanging in automated environments. Example: `"NON_INTERACTIVE_MODE": true`.

- **`Providers`**: Used to configure different model providers.
- **`Router`**: Used to set up routing rules. `default` specifies the default model, which will be used for all requests if no other route is configured.
- **`API_TIMEOUT_MS`**: Specifies the timeout for API calls in milliseconds.

#### Environment Variable Interpolation

Claude Code Router supports environment variable interpolation for secure API key management. You can reference environment variables in your `config.json` using either `$VAR_NAME` or `${VAR_NAME}` syntax:

```json
{
  "OPENAI_API_KEY": "$OPENAI_API_KEY",
  "GEMINI_API_KEY": "${GEMINI_API_KEY}",
  "Providers": [
    {
      "name": "openai",
      "api_base_url": "https://api.openai.com/v1/chat/completions",
      "api_key": "$OPENAI_API_KEY",
      "models": ["gpt-5", "gpt-5-mini"]
    }
  ]
}
```

This allows you to keep sensitive API keys in environment variables instead of hardcoding them in configuration files. The interpolation works recursively through nested objects and arrays.

Here is a comprehensive example:

```json
{
  "APIKEY": "your-secret-key",
  "PROXY_URL": "http://127.0.0.1:7890",
  "LOG": true,
  "API_TIMEOUT_MS": 600000,
  "NON_INTERACTIVE_MODE": false,
  "Providers": [
    {
      "name": "openrouter",
      "api_base_url": "https://openrouter.ai/api/v1/chat/completions",
      "api_key": "sk-xxx",
      "models": [
        "google/gemini-2.5-pro-preview",
        "anthropic/claude-sonnet-4",
        "anthropic/claude-3.5-sonnet",
        "anthropic/claude-3.7-sonnet:thinking"
      ],
      "transformer": {
        "use": ["openrouter"]
      }
    },
    {
      "name": "deepseek",
      "api_base_url": "https://api.deepseek.com/chat/completions",
      "api_key": "sk-xxx",
      "models": ["deepseek-chat", "deepseek-reasoner"],
      "transformer": {
        "use": ["deepseek"],
        "deepseek-chat": {
          "use": ["tooluse"]
        }
      }
    },
    {
      "name": "ollama",
      "api_base_url": "http://localhost:11434/v1/chat/completions",
      "api_key": "ollama",
      "models": ["qwen2.5-coder:latest"]
    },
    {
      "name": "gemini",
      "api_base_url": "https://generativelanguage.googleapis.com/v1beta/models/",
      "api_key": "sk-xxx",
      "models": ["gemini-2.5-flash", "gemini-2.5-pro"],
      "transformer": {
        "use": ["gemini"]
      }
    },
    {
      "name": "volcengine",
      "api_base_url": "https://ark.cn-beijing.volces.com/api/v3/chat/completions",
      "api_key": "sk-xxx",
      "models": ["deepseek-v3-250324", "deepseek-r1-250528"],
      "transformer": {
        "use": ["deepseek"]
      }
    },
    {
      "name": "modelscope",
      "api_base_url": "https://api-inference.modelscope.cn/v1/chat/completions",
      "api_key": "",
      "models": ["Qwen/Qwen3-Coder-480B-A35B-Instruct", "Qwen/Qwen3-235B-A22B-Thinking-2507"],
      "transformer": {
        "use": [
          [
            "maxtoken",
            {
              "max_tokens": 65536
            }
          ],
          "enhancetool"
        ],
        "Qwen/Qwen3-235B-A22B-Thinking-2507": {
          "use": ["reasoning"]
        }
      }
    },
    {
      "name": "dashscope",
      "api_base_url": "https://dashscope.aliyuncs.com/compatible-mode/v1/chat/completions",
      "api_key": "",
      "models": ["qwen3-coder-plus"],
      "transformer": {
        "use": [
          [
            "maxtoken",
            {
              "max_tokens": 65536
            }
          ],
          "enhancetool"
        ]
      }
    },
    {
      "name": "aihubmix",
      "api_base_url": "https://aihubmix.com/v1/chat/completions",
      "api_key": "sk-",
      "models": [
        "Z/glm-4.5",
        "claude-opus-4-20250514",
        "gemini-2.5-pro"
      ]
    }
  ],
  "Router": {
    "default": "deepseek,deepseek-chat",
    "background": "ollama,qwen2.5-coder:latest",
    "think": "deepseek,deepseek-reasoner",
    "longContext": "openrouter,google/gemini-2.5-pro-preview",
    "longContextThreshold": 60000,
    "webSearch": "gemini,gemini-2.5-flash"
  }
}
```

### 3. Running Claude Code with the Router

Start Claude Code using the router:

```shell
ccr code
```

> **Note**: After modifying the configuration file, you need to restart the service for the changes to take effect:
>
> ```shell
> ccr restart
> ```

### 4. UI Mode

For a more intuitive experience, you can use the UI mode to manage your configuration:

```shell
ccr ui
```

This will open a web-based interface where you can easily view and edit your `config.json` file.

![UI](/blog/images/ui.png)

### 5. CLI Model Management

For users who prefer terminal-based workflows, you can use the interactive CLI model selector:

```shell
ccr model
```
![](blog/images/models.gif)

This command provides an interactive interface to:

- View current configuration:
- See all configured models (default, background, think, longContext, webSearch, image)
- Switch models: Quickly change which model is used for each router type
- Add new models: Add models to existing providers
- Create new providers: Set up complete provider configurations including:
   - Provider name and API endpoint
   - API key
   - Available models
   - Transformer configuration with support for:
     - Multiple transformers (openrouter, deepseek, gemini, etc.)
     - Transformer options (e.g., maxtoken with custom limits)
     - Provider-specific routing (e.g., OpenRouter provider preferences)

The CLI tool validates all inputs and provides helpful prompts to guide you through the configuration process, making it easy to manage complex setups without editing JSON files manually.

### 6. Presets Management

Presets allow you to save, share, and reuse configurations easily. You can export your current configuration as a preset and install