# Basic chat/API preflight

This two-prompt check confirms only that the OpenAI-compatible endpoint returns
basic chat and code-shaped text. It supplies no tools, executes no tools, and is
**not agent evidence**.

```bash
export OPENAI_BASE_URL=http://127.0.0.1:8001/v1
export SMOKE_MODEL=local-qwen3-coder-next
python3 eval/basic_chat_preflight/run_preflight.py
```

The runner writes `results/basic_chat_preflight.json`. Passing this preflight is
necessary but insufficient for launch; the separate Qwen-native closed-loop
harness is the tool-use gate.