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VEX

Intent Attestation

VEX Intent pillarpurpose bindingsession scope declaration

Intent attestation is the formal, cryptographically signed declaration of a user's goal at the initiation of an agentic session.

INTENT-ACTION DIVERGENCE AS A DETECTION SIGNAL

When an agent's actions diverge significantly from its declared intent, this is a high-confidence indicator of hijack. A 'summary' session that generates 'send_email' calls is exhibiting detectable divergence.

PROTOCOL CONTEXT (VEX — INTENT PILLAR)

The Intent pillar encodes a structured declaration: goal description, expected tool types, and action category. The VEX Protocol specifies a machine-readable intent schema for alignment verification.

ProvnAI Mitigation

McpVanguard's monitoring layer compares each tool call against the session's signed intent declaration. Calls to categories not listed generate an alignment warning or block, captured in the Witness Log.