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Claude Code supports third-party LLM gateways via environment variables. AI Stats exposes an Anthropic-compatible surface at /v1/messages, so you can point Claude Code at AI Stats without changing your prompts.

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Prerequisites

  • An AI Stats API key.
  • Claude Code installed locally.

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1) Set gateway environment variables

export ANTHROPIC_BASE_URL="https://api.phaseo.app"
export ANTHROPIC_AUTH_TOKEN="your_ai_stats_api_key"
export ANTHROPIC_API_KEY=""

$env:ANTHROPIC_BASE_URL = "https://api.phaseo.app"
$env:ANTHROPIC_AUTH_TOKEN = "your_ai_stats_api_key"
$env:ANTHROPIC_API_KEY = ""

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2) Pick a model (optional)

Set ANTHROPIC_MODEL if you want a fixed default. Use model ids listed in Models.

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3) Start Claude Code

claude

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Endpoint mapping

  • Claude Code calls Anthropic-style endpoints (/v1/messages).
  • AI Stats handles those requests through Anthropic Messages.

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Compatibility notes

  • ANTHROPIC_AUTH_TOKEN is sent as an Authorization header, which AI Stats accepts.
  • Current limitation: streaming + tools on Anthropic Messages can return 400 invalid_request. If your workflow depends on streamed tool loops, test this path before broad rollout.
Last modified on March 11, 2026