As AI agents initiate payments, invoke tools and act across organisational boundaries, accountability cannot depend on a single participant's logs. Organisations need to establish who acted, what authority the evidence supports and which outcomes can be independently reviewed.
APP is the technical evidence protocol. It gives implementations a common vocabulary for actors, principals, delegated authority, intent, actions, observations, evidence, execution and outcomes. It preserves what each observation point can establish, what remains uncertain and why a claim is verified, asserted, inferred, conflicted or unresolved.
INEVRI develops APP and provides the commercial engagement and assurance offering. APP defines evidence semantics and architectural patterns; INEVRI works with organisations evaluating how independent evidence applies to consequential autonomous operations, starting with agentic payments and financial infrastructure.
APP supports Outside-In observation at protected service boundaries and Inside-Out instrumentation within controlled runtimes. These evidence planes can be correlated without collapsing independently operated domains into a single source of truth. Engineering, payments, security and infrastructure teams can examine the technical material and define an evaluation around the boundaries they control.