> ## Documentation Index
> Fetch the complete documentation index at: https://docs.duiapi.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Configuration guide

> Configure OpenCode to use DUIAPI

OpenCode uses `opencode.json` for model and endpoint configuration. Put this configuration in the global config file so OpenCode uses DUIAPI by default.

<Tabs>
  <Tab title="Windows">
    ## 1. Open the configuration directory

    Press **Win + R**, enter the following path, and press Enter:

    ```text theme={null}
    %userprofile%\.config\opencode
    ```

    If the directory does not exist, create it. If `opencode.json` does not exist, create and open it.

    ## 2. Write opencode.json

    <Tip>
      Replace `<API_KEY>` with your API key, such as `sk-xxxxxx`. Replace model names with the models you use.
    </Tip>

    ```json theme={null}
    {
      "models": {
        "deepseek-v4-pro": {
          "name": "deepseek-v4-pro"
        },
        "glm-5.2": {
          "name": "glm-5.2"
        },
        "qwen3.7-max": {
          "name": "qwen3.7-max"
        }
      },
      "npm": "@ai-sdk/anthropic",
      "options": {
        "apiKey": "<API_KEY>",
        "baseURL": "https://www.duiapi.com/v1",
        "setCacheKey": true
      }
    }
    ```

    ## 3. Test the configuration

    ```bash theme={null}
    opencode
    ```
  </Tab>

  <Tab title="macOS">
    ## 1. Open the configuration directory

    ```bash theme={null}
    mkdir -p ~/.config/opencode
    cd ~/.config/opencode
    touch opencode.json
    open -a TextEdit opencode.json
    ```

    ## 2. Write opencode.json

    Use the same `opencode.json` content shown in the Windows tab.

    ## 3. Test the configuration

    ```bash theme={null}
    opencode
    ```
  </Tab>

  <Tab title="Linux">
    ## 1. Open the configuration directory

    ```bash theme={null}
    mkdir -p ~/.config/opencode
    cd ~/.config/opencode
    touch opencode.json
    nano opencode.json
    ```

    ## 2. Write opencode.json

    Use the same `opencode.json` content shown in the Windows tab.

    ## 3. Test the configuration

    ```bash theme={null}
    opencode
    ```
  </Tab>
</Tabs>