Claude Code

Anthropic's official CLI — native Anthropic protocol.

Setup steps

1. Set environment variables (Base URL without /v1):

# macOS / Linux
export ANTHROPIC_BASE_URL=https://api.llmapi.pro:99
export ANTHROPIC_AUTH_TOKEN=sk-YOUR_KEY

# Windows PowerShell
$env:ANTHROPIC_BASE_URL="https://api.llmapi.pro:99"
$env:ANTHROPIC_AUTH_TOKEN="sk-YOUR_KEY"

# Windows CMD
set ANTHROPIC_BASE_URL=https://api.llmapi.pro:99
set ANTHROPIC_AUTH_TOKEN=sk-YOUR_KEY

2. Just run claude. To persist: add to ~/.zshrc / ~/.bashrc (Mac/Linux) or use setx (Windows).
3. Pick a model: claude --model claude-opus-4-8, or claude --model claude-fable-5.
4. Want Fable 5 (or any custom model) to show up directly in the /model menu? The latest Claude Code /model menu only lists built-in models with no free-text input — set the env var below to add it to the bottom of the menu (you can also always run claude --model claude-fable-5 directly):

# macOS / Linux
export ANTHROPIC_CUSTOM_MODEL_OPTION=claude-fable-5
export ANTHROPIC_CUSTOM_MODEL_OPTION_NAME="Fable 5"

# Windows PowerShell
$env:ANTHROPIC_CUSTOM_MODEL_OPTION="claude-fable-5"
$env:ANTHROPIC_CUSTOM_MODEL_OPTION_NAME="Fable 5"

Notes

• Claude Code uses the Anthropic protocol — Base URL has no /v1.
• Fable 5 not appearing in the /model menu by default is expected — that menu is a hard-coded client-side list unrelated to our model catalog; add it via ANTHROPIC_CUSTOM_MODEL_OPTION above.
• Want 5h / weekly usage in your status bar? See Usage in Claude Code.