Signet + Visa Tap to Pay

Step 1: Register payment agents

Register agents that will make Visa payments with Signet, including their operator and financial capabilities.

Step 2: Implement pre-authorization trust check

Before authorizing a Visa Tap payment, query the agent's Signet Score with emphasis on the Financial dimension.

Step 3: Set trust-based spending limits

Map Signet Score tiers to Visa spending limits and merchant category restrictions.

Step 4: Report transaction history

Feed Visa transaction outcomes (approvals, declines, disputes) back to Signet for Financial dimension scoring.

// Pre-authorization trust check for Visa Tap payments
async function preAuthorize(agentSid: string, merchantCategory: string) {
  const score = await signet.lookupScore(agentSid);

  return {
    authorized: score.composite_score >= 600,
    financial_dimension: score.financial,
    max_transaction: calculateLimit(score.composite_score),
    restrictions: getRestrictions(score, merchantCategory),
  };
}