# `mix req_llm.doctor`
[🔗](https://github.com/agentjido/req_llm/blob/main/lib/mix/tasks/req_llm.doctor.ex#L1)

Runs read-only ReqLLM installation and runtime diagnostics.

    mix req_llm.doctor
    mix req_llm.doctor --model openai:gpt-4o-mini
    mix req_llm.doctor --provider anthropic
    mix req_llm.doctor --format json

The default command performs no provider requests or network probes. Warning-only
results exit successfully; diagnostic errors produce a non-zero exit status.

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*Consult [api-reference.md](api-reference.md) for complete listing*