> ## Documentation Index
> Fetch the complete documentation index at: https://core.anylayer.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Marketplace Use Case

> Trust-based marketplace with ZKScore seller verification

## Overview

Build trusted marketplaces where buyer/seller reputation reduces fraud and improves transaction confidence.

## Implementation

<CodeGroup>
  ```javascript JavaScript theme={null}
  async function getSellerTrustLevel(seller) {
    const score = await zkScore.getScore(seller);
    const attestations = await trustRegistry.getReceivedAttestationUIDs(seller);
    
    if (score.total >= 700 && attestations.length >= 5) return 'verified';
    if (score.total >= 400) return 'trusted';
    return 'new';
  }
  ```
</CodeGroup>

## Related Documentation

* [Trust Gating](/guides/trust-gating)