> ## 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.

# Subgraph Endpoints

> GraphQL endpoints for Kleros V2 core, DRT, and V1 subgraphs on Arbitrum, Ethereum, and Gnosis, served via The Graph decentralized network and Goldsky.

All Kleros subgraphs are deployed on The Graph. Use these endpoints to query Kleros data via GraphQL.

Every subgraph published by Kleros on The Graph decentralized network is listed on the [Kleros deployer profile on Graph Explorer](https://thegraph.com/explorer/profile/0x7f3a845bf7aa9eb6da3dc53518ff22a2f65612e6?chain=arbitrum-one\&view=Subgraphs). Each Explorer page shows the subgraph ID and the exact query URL.

<Note>
  **Infrastructure:** Subgraphs were migrated from Alchemy to Goldsky following Alchemy's subgraph service shutdown (December 2025–January 2026). The core subgraph 0.18.1 and DRT subgraph 0.14.0 were deployed on Goldsky (November 2025), and the GTCR Indexer reached v0.1.7 with an Envio branch (April 2026). Some applications use Envio HyperIndex as the primary indexer with a subgraph as fallback.
</Note>

<Warning>
  Subgraph endpoints on the decentralized network require a **Graph API key**. Get one at [thegraph.com/studio](https://thegraph.com/studio). In template mappings you will see `{{{graphApiKey}}}` - this is injected at runtime by the Kleros SDK.
</Warning>

***

## V2 Subgraphs (Arbitrum)

### Core Subgraph (KlerosCore, courts, disputes, jurors, stakes)

| Environment | Network          | Explorer Page                                                                                                  | Subgraph ID                                    |
| ----------- | ---------------- | -------------------------------------------------------------------------------------------------------------- | ---------------------------------------------- |
| Mainnet     | Arbitrum One     | [kleros-v2-coreneo](https://thegraph.com/explorer/subgraphs/3U95wXKP8fBpkMNn8mbroVkUTuh6KtHGa456pTixx9B2)      | `3U95wXKP8fBpkMNn8mbroVkUTuh6KtHGa456pTixx9B2` |
| Testnet     | Arbitrum Sepolia | [kleros-v2-core-testnet](https://thegraph.com/explorer/subgraphs/77xeh3UeBCzHokbVtkeaH42vXsFh6MRe4JpZSPddoXZo) | `77xeh3UeBCzHokbVtkeaH42vXsFh6MRe4JpZSPddoXZo` |
| Devnet      | Arbitrum Sepolia | [kleros-v2-core-devnet](https://thegraph.com/explorer/subgraphs/4Rg3NAW99hX8RDD281ycfeRWxp92k6RdqpW3pf6imGTS)  | `4Rg3NAW99hX8RDD281ycfeRWxp92k6RdqpW3pf6imGTS` |

**Decentralized network query URL pattern:**

```
https://gateway.thegraph.com/api/{YOUR_API_KEY}/subgraphs/id/{SUBGRAPH_ID}
```

### Dispute Template Registry Subgraph

| Environment | Network          | Explorer Page                                                                                                         | Subgraph ID                                    |
| ----------- | ---------------- | --------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------- |
| Mainnet     | Arbitrum One     | [kleros-v2-drt](https://thegraph.com/explorer/subgraphs/FktCcvKHN9mdcyNMK1jgnKwf5AwmVXka4kATxXX3HmKT)                 | `FktCcvKHN9mdcyNMK1jgnKwf5AwmVXka4kATxXX3HmKT` |
| Testnet     | Arbitrum Sepolia | [kleros-v2-drt-arbisep-testnet](https://thegraph.com/explorer/subgraphs/EZjJCfxBiQ9B9RtfQDTzNKx34nckSnBWDNaLZPficnHp) | `EZjJCfxBiQ9B9RtfQDTzNKx34nckSnBWDNaLZPficnHp` |

***

## V2 Product Subgraphs

### Escrow V2

| Environment | Network          | Explorer Page                                                                                            | Subgraph ID                                    |
| ----------- | ---------------- | -------------------------------------------------------------------------------------------------------- | ---------------------------------------------- |
| Mainnet     | Arbitrum One     | [escrow-v2-neo](https://thegraph.com/explorer/subgraphs/96vpnRJbRVkzF6usMNYMMoziSZEfSwGEDpXNi2h9WBSW)    | `96vpnRJbRVkzF6usMNYMMoziSZEfSwGEDpXNi2h9WBSW` |
| Devnet      | Arbitrum Sepolia | [escrow-v2-devnet](https://thegraph.com/explorer/subgraphs/3aZxYcZpZL5BuVhuUupqVrCV8VeNyZEvjmPXibyPHDFQ) | `3aZxYcZpZL5BuVhuUupqVrCV8VeNyZEvjmPXibyPHDFQ` |

Full query URL (mainnet):

```
https://gateway.thegraph.com/api/{YOUR_API_KEY}/subgraphs/id/96vpnRJbRVkzF6usMNYMMoziSZEfSwGEDpXNi2h9WBSW
```

### Curate V2

Curate V2 subgraph is under active development. A devnet deployment is published as [curate-v2-devnet](https://thegraph.com/explorer/subgraphs/H93eWJbDpYKAtkLmsMn7Su3ZLZwAwLN5VoyvQH4NbGAv). Check the [curate-v2 repository](https://github.com/kleros/curate-v2/tree/master/subgraph) for the latest deployment.

***

## V1 Subgraphs

These index V1 Kleros products still in active use.

<Note>
  The Graph hosted service (`thegraph.com/hosted-service/...` URLs) has been shut down. Old hosted-service endpoints no longer work.
</Note>

### Curate V1

| Network          | Explorer Page                                                                                                 | Subgraph ID                                    |
| ---------------- | ------------------------------------------------------------------------------------------------------------- | ---------------------------------------------- |
| Ethereum Mainnet | [legacy-curate-mainnet](https://thegraph.com/explorer/subgraphs/A5oqWboEuDezwqpkaJjih4ckGhoHRoXZExqUbja2k1NQ) | `A5oqWboEuDezwqpkaJjih4ckGhoHRoXZExqUbja2k1NQ` |
| Gnosis Chain     | [legacy-curate-gnosis](https://thegraph.com/explorer/subgraphs/9hHo5MpjpC1JqfD3BsgFnojGurXRHTrHWcUcZPPCo6m8)  | `9hHo5MpjpC1JqfD3BsgFnojGurXRHTrHWcUcZPPCo6m8` |

The Curate application at [curate.kleros.io](https://curate.kleros.io) queries these public Goldsky endpoints, which require no API key:

```
https://api.goldsky.com/api/public/project_cmgx9all3003atlp2bqha1zif/subgraphs/pgtcr-mainnet/0.0.3/gn
https://api.goldsky.com/api/public/project_cmgx9all3003atlp2bqha1zif/subgraphs/pgtcr-gnosis/0.0.3/gn
https://api.goldsky.com/api/public/project_cmgx9all3003atlp2bqha1zif/subgraphs/pgtcr-sepolia/0.0.3/gn
```

### Proof of Humanity V1

The Proof of Humanity application at [app.proofofhumanity.id](https://app.proofofhumanity.id) queries this public Studio endpoint:

```
https://api.studio.thegraph.com/query/61738/proof-of-humanity-mainnet/version/latest
```

You can also query PoH V1 directly on-chain: call `isRegistered(address)` on `0xC5E9dDebb09Cd64DfaCab4011A0D5cEDaf7c9BDb` on Ethereum Mainnet.

### Other V1 Products

For Escrow V1, Linguo, Tokens, and other V1 apps, see the [Kleros deployer profile on Graph Explorer](https://thegraph.com/explorer/profile/0x7f3a845bf7aa9eb6da3dc53518ff22a2f65612e6?chain=arbitrum-one\&view=Subgraphs) and the [Kleros subgraph repositories on GitHub](https://github.com/orgs/kleros/repositories?q=subgraph).

***

## Querying Subgraphs

All subgraphs expose a GraphQL API. Query them with any GraphQL client:

```typescript theme={null}
const SUBGRAPH_URL =
  `https://gateway.thegraph.com/api/${process.env.GRAPH_API_KEY}/subgraphs/id/96vpnRJbRVkzF6usMNYMMoziSZEfSwGEDpXNi2h9WBSW`;

const response = await fetch(SUBGRAPH_URL, {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    query: `{
      courts(first: 10) {
        id
        policy { policy }
        minStake
        timesPerPeriod
      }
    }`
  })
});

const { data } = await response.json();
```

<Note>
  Addresses in subgraph responses are always **lowercase hex** (no EIP-55 checksum). Always lowercase addresses in your query variables, or the subgraph will return no results.
</Note>

***

<CardGroup cols={2}>
  <Card title="Query Examples" icon="magnifying-glass" href="/developers/subgraph/queries">
    Common GraphQL queries for disputes, courts, and jurors
  </Card>

  <Card title="Subgraph Overview" icon="database" href="/developers/subgraph/overview">
    Architecture and local development setup
  </Card>
</CardGroup>