Claude Code

Claude Code is Anthropic's official command-line coding assistant. It calls Anthropic's Messages API directly, so you can use environment variables to redirect requests to the Sakrylle gateway and enjoy the discounted pricing.

• Website: https://claude.ai/code
• Docs: https://code.claude.com/docs/en/overview

Prerequisites

1. Claude Code CLI installed (per the official documentation)
2. An API Key created in the Sakrylle Console

Configuration

Claude Code uses the following environment variables to decide which API to hit:

Variable	Meaning
ANTHROPIC_BASE_URL	API gateway URL — the root domain, no /v1; the CLI appends /v1/messages itself
ANTHROPIC_AUTH_TOKEN	Gateway authentication token; the CLI prepends Bearer and sends it as the Authorization header
ANTHROPIC_MODEL	Default model name

Quick verification

In your terminal:

export ANTHROPIC_BASE_URL="https://api.sakrylle.com"
export ANTHROPIC_AUTH_TOKEN="<your Sakrylle key>"
export ANTHROPIC_MODEL="claude-sonnet-4-6"

claude

Once in the interactive UI, try a "hello". If the response looks normal, the configuration is correct.

Do not include /v1 in ANTHROPIC_BASE_URL. Claude Code appends /v1/messages internally; doubling it leads to a 404.

Persistent configuration

Add the export lines above to your shell config:

• bash: ~/.bashrc or ~/.bash_profile
• zsh: ~/.zshrc
• fish: ~/.config/fish/config.fish (use the set -gx ANTHROPIC_BASE_URL ... form)

Or put them into the env block of Claude Code's settings.json (this scopes them to Claude Code only):

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.sakrylle.com",
    "ANTHROPIC_AUTH_TOKEN": "<your Sakrylle key>",
    "ANTHROPIC_MODEL": "claude-sonnet-4-6"
  }
}

Settings file location:

• macOS / Linux: ~/.config/claude/settings.json
• Windows: %APPDATA%\Claude\settings.json

Use ANTHROPIC_AUTH_TOKEN (which produces Authorization: Bearer ...), not ANTHROPIC_API_KEY — the latter switches to the X-Api-Key header and the CLI prefers it over Pro/Team subscriptions, which is inconsistent with this gateway's authentication.

FAQ

• 404 not found: most likely ANTHROPIC_BASE_URL includes /v1. Change it to https://api.sakrylle.com
• 401 invalid auth: you used ANTHROPIC_API_KEY but Sakrylle expects Bearer. Switch to ANTHROPIC_AUTH_TOKEN
• MCP tool search disabled notice: when Claude Code detects that the base URL is not an Anthropic first-party domain, it disables tool_search by default. To enable it, add export ENABLE_TOOL_SEARCH=true
• 402 insufficient balance: top up in the Console
• Model not found: Sakrylle does not expose old models like claude-opus-4-1; for the available model list see Models and Pricing