Measure one source file. Free.

Run the real deterministic developer.code-metrics handler once per client per hour. No wallet, payment signature, model, code execution, or network request is involved.

Trial JSON is capped at 200,000 bytes and is processed in memory without entering the paid-request ledger or result cache. Only a coarse aggregate success count is retained; the short-lived client hash stays in process memory for rate limiting. Do not submit secrets. A successful execution consumes the hourly trial even if you close this page.