Claude Code Integration

Configure as the Claude Messages endpoint via Claude Code settings.json.

Configuration

ANTHROPIC_BASE_URL	`https://your-router-domain.com/`Points to . Do not append /v1 — keep the trailing slash.
ANTHROPIC_AUTH_TOKEN	`YOUR_API_KEY`The full key shown after creating an API Key on the API Keys page.

DeepSeek example

{
  "$schema": "https://json.schemastore.org/claude-code-settings.json",
  "env": {
    "ANTHROPIC_BASE_URL": "https://your-router-domain.com/",
    "ANTHROPIC_AUTH_TOKEN": "YOUR_API_KEY",
    "ANTHROPIC_MODEL": "deepseek-v4-pro[1m]",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "deepseek-v4-pro[1m]",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "deepseek-v4-pro[1m]",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "deepseek-v4-flash",
    "CLAUDE_CODE_SUBAGENT_MODEL": "deepseek-v4-flash",
    "CLAUDE_CODE_EFFORT_LEVEL": "max"
  }
}

Official Claude models example

{
  "$schema": "https://json.schemastore.org/claude-code-settings.json",
  "env": {
    "ANTHROPIC_BASE_URL": "https://your-router-domain.com/",
    "ANTHROPIC_AUTH_TOKEN": "YOUR_API_KEY",
    "ANTHROPIC_MODEL": "claude-sonnet-4-6",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "claude-opus-4-8",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "claude-sonnet-4-6",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "claude-haiku-4-5",
    "CLAUDE_CODE_SUBAGENT_MODEL": "claude-haiku-4-5",
    "CLAUDE_CODE_EFFORT_LEVEL": "max"
  }
}

Config file location

macOS / Linux

User config is usually at ~/.claude/settings.json .

Open directory:

mkdir -p ~/.claude && open -e ~/.claude/settings.json

Project config lives at .claude/settings.json in the project root.

Windows

User config is at %USERPROFILE%\.claude\settings.json .

Open with PowerShell:

mkdir $env:USERPROFILE\.claude -Force; notepad $env:USERPROFILE\.claude\settings.json

Project config lives at .claude\settings.json in the project root.

Model configuration notes

For DeepSeek: the primary model is deepseek-v4-pro[1m]; Haiku / Subagent use deepseek-v4-flash.
For official Claude models: Opus → claude-opus-4-8, Sonnet → claude-sonnet-4-6, Haiku / Subagent → claude-haiku-4-5.
Replace YOUR_API_KEY with the full key from your API Keys page.

Codex