.env.example

# Copy to .env and fill in. The launcher loads it with override=True, so values
# here win over anything already exported in your shell.

# --- required ---
# The LLM driving every agent in this framework. Any OpenAI-protocol endpoint:
# DeepSeek, OpenRouter, vLLM and friends all work by pointing the base URL at
# them, there is no separate provider class.
OPENAI_API_KEY=
OPENAI_API_BASE_URL=https://api.openai.com/v1

# --- optional ---
# Restrict which GPUs experiments may use. Unset means "ask torch".
# CUDA_VISIBLE_DEVICES=0,1

# Nothing else is read from the environment. Note in particular:
#
#   * --exp_backend claudecode shells out to the `claude` CLI, which reads its own
#     credentials — install and authenticate it separately (`claude` then /login).
#     This framework never sees an Anthropic key.
#
#   * Literature search uses arXiv and Crossref, neither of which needs a key.
#
#   * Everything else is configured in config/*.yaml, not here.