What Is Transaction Trust Scoring?
Transaction Trust Scoring (TTS) is a real-time trust verdict system for agent-to-vendor transactions in autonomous commerce. TTS evaluates counterparties across five dimensions — entity verification, compliance standing, behavioral consistency, counterparty reputation, and ethical alignment — producing sub-200ms verdicts that enable AI agents to autonomously approve, escalate, or refuse transactions.
Why It Matters
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AI agents need trust infrastructure for autonomous purchasing. As AI agents increasingly conduct commerce on behalf of users, they require real-time trust signals to distinguish legitimate vendors from synthetic or fraudulent entities.
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Sub-200ms verdicts enable real-time commerce. Trust scoring must operate at the speed of transactions. TTS delivers verdicts in under 200 milliseconds, enabling seamless integration into purchase flows without user-perceptible delay.
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5-dimension scoring with ethics multiplier prevents harm. The ethics dimension acts as a multiplier on the aggregate score, ensuring that entities failing ethical standards cannot achieve passing verdicts regardless of other dimensions.
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Enables agent commerce at scale. TTS provides the trust infrastructure layer that makes autonomous agent-to-agent and agent-to-vendor commerce viable across millions of transactions.
Scoring Dimensions
| Dimension | Weight | Measures |
|---|---|---|
| Entity | 0.25 | Identity verification and organizational legitimacy |
| Compliance | 0.20 | Regulatory standing and certification status |
| Behavioral | 0.20 | Transaction pattern consistency and anomaly detection |
| Counterparty | 0.15 | Reputation and history with other verified entities |
| Ethics | 0.20 | Ethical alignment multiplier — hard-fail capability |
≥0.75
Allow
0.60–0.75
Require Approval
<0.50 beh.
Require Review
<0.60
Refuse
Source
Transaction Trust Scoring for Agent Commerce
Thomas Perry Jr. · DOI: 10.5281/zenodo.18718585