guard-lab

One run proves nothing.

Define a schema, run a prompt against it N times, and see the distribution of ways it breaks. The failures that matter are the ones that parse cleanly and are wrong — those never reach your error rate. Browser-only, BYOK, nothing stored.

Schema

4 fields · enum, number, string, boolean, array

Prompt

The schema is appended as a plain instruction — no “YOU MUST RETURN ONLY JSON” hardening. Suppressing the failures here would hand you a compliance number your real prompt can't reproduce.

Run

API key — stays in this tab

ModelRuns

Temperature 1.0

Nothing run yet. Add a key and press run, or .