Did the AI lose the truth on the way to the human?
A fluent AI summary can drop the one line that matters — the contraindication, the dose ceiling, the safety protocol — and still read perfectly. The Fidelity Gate makes the document carry its own contract for how AI must represent it, then blocks anything that breaks it.
It is the content-side complement to attestation, and it works on known clinical content — the lane where governed AI is deployable today.
Did a physician sign off before the AI acted? The hard intercept that stops autonomous action without a human in the loop.
Did the AI keep the truth after it acted? The check that stops a summary from quietly losing the clause that keeps a patient safe.
- ◆Penicillin allergy — prior anaphylaxis. Do not give amoxicillin or any penicillin-class antibiotic.
- ◆Warfarin 5 mg daily. Do not exceed 5 mg without an INR recheck.
- ◆Two-person assist for all transfers. Fall risk, prior hip fracture.
fidelity_contract:
protected:
- clause: penicillin_allergy rule: preserve_verbatim
- clause: warfarin_ceiling rule: never_soften · keep "5 mg" + "INR"
- clause: two_person_transfer rule: never_drop
on_violation: block_and_flagThe check is deterministic — edit the summary above and the gate re-scores live. Illustrative care plan; the mechanism is the point.
Capability is racing. Governance is the product.
The frontier labs are optimizing raw capability. In medicine, the system that ships is the governed one — the model that earns a human sign-off and never loses the truth on the way back. That layer is what HarnessHealth builds.
HarnessHealth is the AI governance infrastructure layer of the SolvingHealth stack — physician-supervised AI deployment, hard-intercept attestation, audit-ready provenance.