onceprobe

onceprobe injects a timeout after a committed effect and checks that replay still yields exactly one effect. Deterministic local CLI and fixtures, one supported adapter, honest pass/fail/unknown verdicts.

What it checks

The acceptance gate is exact: an injected timeout after a committed effect must still produce exactly one effect across replay. onceprobe grades a run as pass, fail, or unknown, and never fabricates a verdict from absent data.

Run it locally

Grade a fixture with the deterministic CLI, no account required:

node src/cli.mjs fixtures/positive-single-effect.json --human

Hosted history

Persist graded receipts behind an account, with isolation, 30-day retention, and deletion. That surface is paid; the local CLI is the free trial.

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