Claude Code

Claude Code uses the Anthropic Messages API, which ORYNX serves for every Claude model.

Configure

Add an env block to ~/.claude/settings.json (create the file if it does not exist):

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.orynx.dev",
    "ANTHROPIC_AUTH_TOKEN": "sk-orynx-...",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "claude-opus-5",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "claude-sonnet-5",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "claude-haiku-4-5",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  }
}

Start Claude Code and run /status. The Status tab should show https://api.orynx.dev as the base URL and ANTHROPIC_AUTH_TOKEN as the credential.

Notes

• ANTHROPIC_AUTH_TOKEN sends the key as Authorization: Bearer. ANTHROPIC_API_KEY sends it as x-api-key instead, and Claude Code asks you once to approve it. ORYNX accepts both.
• Background tasks such as session titles run on the Haiku pin. Without ANTHROPIC_DEFAULT_HAIKU_MODEL they run on your main model, which costs more.
• Prices for the pinned models, per 1M input / output tokens: Opus 5 $5.00 / $25.00, Sonnet 5 $2.00 / $10.00, Haiku 4.5 $1.00 / $5.00.
• ORYNX does not serve the token counting endpoint, so Claude Code estimates context size from the text and /context shows approximate counts.
• CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC turns off telemetry, error reporting and auto-updates. Run claude update to update by hand.
• If requests fail with a 400 that mentions context_management or Extra inputs are not permitted, add "CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS": "1" to the env block.
• Prompt caching works. Cached reads are billed at the cache read price.

One-off shell setup

export ANTHROPIC_BASE_URL="https://api.orynx.dev"
export ANTHROPIC_AUTH_TOKEN="sk-orynx-..."
claude