> ## Documentation Index
> Fetch the complete documentation index at: https://kleros-mintlify-6ebc7975.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Integrate decentralized arbitration into your smart contracts using Kleros V1 on Ethereum and Gnosis, or Kleros V2 on Arbitrum with cross-chain support.

## What is Kleros?

Kleros is a decentralized dispute resolution protocol. Think of it as a **court system for smart contracts** - when parties disagree, Kleros provides a trustless way to reach an enforceable ruling.

Kleros is implemented on Ethereum (V1) and Arbitrum (V2):

* **V1** is production infrastructure running on Ethereum Mainnet and Gnosis Chain. It has been in production since 2018 and continues to receive active development.
* **V2** operates on Arbitrum, with cross-chain support via the [Vea bridge](/developers/crosschain/vea-bridge), modular dispute resolution via dispute kits, and improved scalability.

<Note>
  Each product section covers both V1 and V2. V1 integration guides and examples are included directly. V2 pages document technical specifications and contract references.
</Note>

## Why Integrate?

<CardGroup cols={2}>
  <Card title="Trustless Enforcement" icon="gavel">
    No central authority. Rulings are cryptoeconomically secured by staked jurors.
  </Card>

  <Card title="Flexible Resolution" icon="puzzle-piece">
    Binary yes/no, multiple choice, or nuanced rulings - your contract defines the options.
  </Card>

  <Card title="Cross-Chain Ready" icon="link">
    Disputes can originate from Ethereum mainnet or other chains via the gateway system.
  </Card>

  <Card title="Battle-Tested" icon="shield-check">
    Over \$50M in value secured through Kleros arbitration since 2018, with 100+ cases resolved on Court V2 Beta (September 2025).
  </Card>
</CardGroup>

## Use Cases

| Application   | Example                                                          |
| ------------- | ---------------------------------------------------------------- |
| **Escrow**    | Release funds only when both parties agree, or let jurors decide |
| **Insurance** | Decentralized claims processing                                  |
| **Curation**  | Token-curated registries with dispute resolution                 |
| **Oracles**   | Human-powered verification for subjective data                   |
| **DAOs**      | Governance dispute resolution                                    |

## How It Works (30-second version)

```
Your Contract → Creates Dispute → Jurors Vote → Ruling Returned → Your Contract Enforces
```

1. Your contract implements the `IArbitrableV2` interface
2. When a dispute arises, call `createDispute()` with arbitration fees
3. Random jurors are drawn (weighted by staked PNK)
4. Jurors vote, with appeals possible
5. The final ruling is passed back to your contract via `rule()`

## Next Steps

<CardGroup cols={2}>
  <Card title="Quick Start" icon="rocket" href="/developers/quickstart">
    Get your first integration running in minutes
  </Card>

  <Card title="Architecture" icon="sitemap" href="/developers/architecture">
    Understand the protocol components
  </Card>

  <Card title="Products (V1 + V2)" icon="grid-2" href="/developers/products/overview">
    Reference for every Kleros product
  </Card>
</CardGroup>