Claude Code

Configure it manually

This is what the setup script writes, for anyone who would rather edit the files themselves. Replace<YOUR_KEY> with your Tokenmaxer access token.

• Map the alias slots, not `ANTHROPIC_MODEL`

  Setting `ANTHROPIC_MODEL` alone pins you to one model. Mapping the four alias slots instead makes `/model opus|sonnet|haiku` and `--model` resolve to Tokenmaxer models, so the picker keeps working.

• `ANTHROPIC_SMALL_FAST_MODEL` is not an optimisation

  Claude Code runs background work on a small model, and without the override it requests a stock Haiku id the proxy does not serve.

• `CLAUDE_CODE_ALWAYS_ENABLE_EFFORT` keeps the effort flag

  Claude Code gates the `--effort` selector on a hardcoded model list that these ids are not on. Without this, `--effort low|medium|high|xhigh|max` is unavailable.

• The 1M models need a `[1m]` suffix

  Claude Code has no registry entry for these ids and falls back to a 200K window, so every Claude model compacts four fifths early. `[1m]` on the model name is its own opt-in for the full window and is stripped before the request is sent. `CLAUDE_CODE_DISABLE_1M_CONTEXT` turns this off again.

• Codex models need an explicit context window

  Claude Code has no registry entry for these ids, assumes a 200K window, and starts auto-compacting 72K early. It warns on every run until `CLAUDE_CODE_MAX_CONTEXT_TOKENS` is set.

• `CLAUDE_CODE_AUTO_MODE_SERVER=0` keeps auto mode from stalling

  Behind any gateway Claude Code asks the server to run auto mode's classifier by adding a `safeguards` field, which a subscription seat never sends and Tokenmaxer does not forward. Claude Code then shows a notice that holds the first checked action until you press Enter. Turning the server classifier off matches what a native Max session sends and skips the notice.

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.tokenmaxer.dev",
    "ANTHROPIC_AUTH_TOKEN": "<YOUR_KEY>",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "anthropic/claude-opus-5-5[1m]",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "anthropic/claude-sonnet-5-5[1m]",
    "ANTHROPIC_DEFAULT_FABLE_MODEL": "anthropic/claude-fable-5-1[1m]",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "anthropic/claude-haiku-5-5[1m]",
    "ANTHROPIC_SMALL_FAST_MODEL": "anthropic/claude-haiku-5-5[1m]",
    "CLAUDE_CODE_ALWAYS_ENABLE_EFFORT": "1",
    "CLAUDE_CODE_AUTO_MODE_SERVER": "0"
  }
}

{
  "env": {
    "ANTHROPIC_BASE_URL": "https://api.tokenmaxer.dev",
    "ANTHROPIC_AUTH_TOKEN": "<YOUR_KEY>",
    "ANTHROPIC_MODEL": "openai/gpt-5.6-terra",
    "ANTHROPIC_SMALL_FAST_MODEL": "openai/gpt-6-luna",
    "CLAUDE_CODE_MAX_CONTEXT_TOKENS": "872000",
    "CLAUDE_CODE_AUTO_MODE_SERVER": "0"
  }
}