# Deterministic coding fixtures `cases.json` contains three atomic Python tasks and hidden executable assertions. Prompts cap answers below 768 tokens. Do not include the tests in requests. ```bash python scripts/validate_stage2.py coding results.jsonl python scripts/validate_stage2.py coding /dev/null --emit-prompts ``` Input JSONL accepts `{"case_id": ..., "output_text": ...}` or native harness rows whose exact `prompt_text` identifies a case. Code is run with the current Python in isolated mode, a five-second timeout, and no network-dependent packages. Run validators only on trusted benchmark output; this is not an OS sandbox.