The physician hard intercept.
The hard intercept is the mechanism by which no AI-generated document with clinical content exits the HarnessHealth system without a cryptographic physician signature. It is both a technical constraint (enforced at the API gateway) and the subject of Provisional Patent No. 1.
"System and Method for Physician-Governed Artificial Intelligence with Hard Intercept and Authority Consumption Tracking"
Drafted April 2026. Filing in process. Provides 12-month protection period. Full specification available to qualified parties under NDA.
Technical specification.
All AI output is classified at generation time. Clinical content is defined as: direct patient recommendations, medication mentions, diagnosis or differential language, care plan content, and billing code assignments. Content meeting this threshold is tagged as requiring attestation.
Tagged output is held in the attestation queue. It cannot be returned to the requesting application without an attestation token. The queue is persistent — documents are not dropped if the requesting application disconnects.
An attestation token is generated only when: a licensed physician with an active NPI and sufficient remaining authority budget has reviewed and approved the document. A physician with an expired or revoked license cannot generate valid tokens.
The token contains: physician NPI (immutable), timestamp UTC (immutable), document SHA-256 hash, review duration in seconds, authority consumption decrement. The token is signed with the platform private key and can be independently verified.
The requesting application receives the document plus the attestation token. The token is logged immutably to the audit trail. The log entry cannot be deleted or modified by any party, including platform administrators.
- General health information queries that do not meet the clinical content threshold
- Billing and administrative content that is not patient-directed
- Developer sandbox mode (attestation is simulated in sandbox; production mode requires live physician review)