VS Code

The Claude extension for VS Code reads the same ~/.claude/settings.json as the Claude Code CLI. Configure that file exactly as on the Claude Code CLI page, then restart VS Code.

1. Configure ~/.claude/settings.json

{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "sk-...",
    "ANTHROPIC_BASE_URL": "https://api.tryarcflow.com",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "claude-opus-4-8",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "claude-sonnet-4-6",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "claude-haiku-4-5",
    "ANTHROPIC_SMALL_FAST_MODEL": "claude-haiku-4-5",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  },
  "hasCompletedOnboarding": true
}

The base URL is the bare host https://api.tryarcflow.com; the Anthropic SDK appends /v1/messages automatically.

2. Restart VS Code

Quit and reopen VS Code so the extension picks up the new settings. The Claude panel now routes requests through Arcflow.

OpenAI-compatible VS Code extensions

For OpenAI-compatible extensions (such as Cline or Roo Code), use the https://api.tryarcflow.com/v1 base URL instead and configure them from their own settings panels.