> ## 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.

# Frequently Asked Questions

> Common questions about ZKScore

## Overview

Answers to frequently asked questions about ZKScore integration and usage.

## General Questions

### What is ZKScore?

ZKScore is a decentralized reputation system that calculates on-chain reputation scores across multiple categories.

### How is my score calculated?

Scores are calculated from on-chain activity across 8 categories: DeFi, NFT, Social, Trading, Governance, Gaming, Identity, and Trust.

### Can I use ZKS ID everywhere?

Yes! All APIs and SDKs accept both ZKS IDs (like `alice.zks`) and wallet addresses.

## Technical Questions

### How often are scores updated?

Scores are updated in real-time as on-chain activities occur.

### Are identities transferable?

No, once activated, ZKS identities are soulbound and cannot be transferred.

### How do I get an API key?

Create an API key through the developer dashboard at [https://app.onzks.com](https://app.onzks.com)

## Related Documentation

* [Getting Started](/sdk/javascript/getting-started)
* [Core Concepts](/concepts/identity)