Configuration guide

Manual configuration is useful when you want to edit Claude Code’s configuration file directly. After configuration, Claude Code sends model requests through DUIAPI.

Windows
macOS
Linux

1. Open the configuration directory

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

%userprofile%\.claude

If settings.json does not exist, create it and open it.

2. Write settings.json

Replace <API_KEY> with your API key, such as sk-xxxxxx. Replace <MODEL> with the model you use, such as qwen3.7-max.

Write the following content to settings.json:

{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "<API_KEY>",
    "ANTHROPIC_BASE_URL": "https://www.duiapi.com",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "<MODEL>",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "<MODEL>",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "<MODEL>",
    "ANTHROPIC_MODEL": "<MODEL>",
    "CLAUDE_CODE_SUBAGENT_MODEL": "<MODEL>"
  },
  "includeCoAuthoredBy": false
}

3. Test the configuration

Save settings.json, then run:

claude

Send a test message after the chat UI opens. If Claude Code replies, the configuration works.

1. Open the configuration directory

Run:

mkdir -p ~/.claude
cd ~/.claude

If settings.json does not exist, create it and open it:

touch settings.json
open -a TextEdit settings.json

2. Write settings.json

Replace <API_KEY> with your API key, such as sk-xxxxxx. Replace <MODEL> with the model you use, such as qwen3.7-max.

Write the same settings.json content shown in the Windows tab.

3. Test the configuration

Save settings.json, then run:

claude

1. Open the configuration directory

Run:

mkdir -p ~/.claude
cd ~/.claude

If settings.json does not exist, create it and open it:

touch settings.json
nano settings.json

2. Write settings.json

Replace <API_KEY> with your API key, such as sk-xxxxxx. Replace <MODEL> with the model you use, such as qwen3.7-max.

Write the same settings.json content shown in the Windows tab.

3. Test the configuration

Save settings.json, then run:

claude

Claude Code

Codex

OpenCode

1. Open the configuration directory

2. Write settings.json

3. Test the configuration

1. Open the configuration directory

2. Write settings.json

3. Test the configuration

1. Open the configuration directory

2. Write settings.json

3. Test the configuration

​1. Open the configuration directory

​2. Write settings.json

​3. Test the configuration

​1. Open the configuration directory

​2. Write settings.json

​3. Test the configuration

​1. Open the configuration directory

​2. Write settings.json

​3. Test the configuration

1. Open the configuration directory

2. Write settings.json

3. Test the configuration

1. Open the configuration directory

2. Write settings.json

3. Test the configuration

1. Open the configuration directory

2. Write settings.json

3. Test the configuration