Application-layer monitoring without a model-layer baseline is governance theatre. MTCP provides both.
Any system can log API responses and sign them cryptographically. That proves a record was kept. It does not prove the model was constrained.
The distinction: recording what the model said vs knowing whether the model was behaving within its governance boundaries when it said it.
Without a pre-deployment evaluation baseline, runtime signals are noise. A model producing 85% compliance means nothing unless you know whether 85% is above or below its evaluated capability.
The PRP runtime wrapper monitors every inference call in a deployment session.
| Stage | What happens |
|---|---|
| Before call | Checks Gate status. Blocks if DENY. Logs request with timestamp. |
| After call | Checks response against registered constraint. Computes compliance signal. |
| Per turn | Updates rolling BIS. Compares against baseline. Fires alerts on drift. |
| Session end | Generates Session Coherence Record (SHA-256 hash of all response hashes). |
| Construct | Definition |
|---|---|
| Rolling BIS | Percentage of compliant turns in the current session. Computed continuously. |
| Drift Delta | Rolling BIS minus Baseline BIS. Negative means production is degrading. |
| Session Coherence Record | SHA-256 hash of all response hashes in sequence. Proves session integrity. |
| Runtime Admissibility | Session is admissible only when rolling BIS stays within drift tolerance. |
| Context | Tolerance | Alert on exceed |
|---|---|---|
| Critical Infrastructure | 2 percentage points | Immediate review |
| Financial Services | 5 percentage points | Stakeholder notification |
| Healthcare | 5 percentage points | Stakeholder notification |
| Government Services | 5 percentage points | Stakeholder notification |
| General Enterprise | 10 percentage points | Monitoring escalation |
Session coherence records without baseline comparison cannot establish governance compliance. They establish record integrity only.
Governance compliance requires both: record integrity (coherence record) AND baseline comparison (drift delta within tolerance).
MTCP provides both. 183,924 evaluations provide the baseline. The PRP wrapper provides the runtime signal. Together they constitute governance. Separately they constitute logging.