Authentication

EurekaClaw supports three authentication methods.

Option A — Anthropic API Key (Most Common)

cp .env.example .env

Edit .env:

ANTHROPIC_API_KEY=sk-ant-...

Option B — Claude Pro/Max via OAuth

No API key required. Uses your Claude Pro or Max subscription.

pip install "eurekaclaw[oauth]"
ccproxy auth login claude_api   # opens browser for one-time login

ANTHROPIC_AUTH_MODE=oauth

EurekaClaw automatically starts and stops ccproxy alongside your session.

Option C — OpenRouter or Local Model

OpenRouter

LLM_BACKEND=openrouter
OPENAI_COMPAT_BASE_URL=https://openrouter.ai/api/v1
OPENAI_COMPAT_API_KEY=sk-or-...
OPENAI_COMPAT_MODEL=anthropic/claude-sonnet-4-6

Local Ollama / vLLM

LLM_BACKEND=local
OPENAI_COMPAT_BASE_URL=http://localhost:11434/v1
OPENAI_COMPAT_MODEL=llama3

Minimax

LLM_BACKEND=minimax
MINIMAX_API_KEY=...
MINIMAX_MODEL=abab7-chat

See Configuration for all LLM backend options.