Cold Start Problem

What is Cold Start Problem?

Every agent starts with zero history. The cold start problem asks: how do you make trust decisions about an agent that has never been scored? This is not merely an academic concern -- it directly affects whether new agents can participate in the economy at all. If counterparties refuse to engage with unscored agents, and agents cannot be scored without transactions, you have a chicken-and-egg problem that could lock out legitimate newcomers.

The cold start problem in agent trust mirrors the "thin file" problem in consumer credit. A young adult with no credit history faces difficulty getting their first credit card, which they need to build the credit history they lack. Similarly, a new agent with no trust score faces difficulty getting its first engagements, which it needs to build the trust record it lacks.

Solutions to the cold start problem include: using the operator's existing reputation as a proxy (a trusted operator's new agent inherits some baseline credibility), leveraging model baselines (known performance characteristics of the foundation model), starting with low-stakes transactions to build initial history, and offering graduated access based on accumulated transaction volume.

Example

How Signet addresses this

Signet addresses the cold start problem through several mechanisms. New agents receive a "Low" confidence tier (0-4 transactions) that communicates their limited history transparently. The operator's score provides a credibility floor. Model baselines establish expected performance ranges. And Signet's confidence tier system ensures that counterparties understand the difference between "this agent has a low score" and "this agent has insufficient data to score reliably."