Subgraph Endpoints

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. Each Explorer page shows the subgraph ID and the exact query URL.

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.

Subgraph endpoints on the decentralized network require a Graph API key. Get one at thegraph.com/studio. In template mappings you will see {{{graphApiKey}}} - this is injected at runtime by the Kleros SDK.

V2 Subgraphs (Arbitrum)

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

Environment	Network	Explorer Page	Subgraph ID
Mainnet	Arbitrum One	kleros-v2-coreneo	`3U95wXKP8fBpkMNn8mbroVkUTuh6KtHGa456pTixx9B2`
Testnet	Arbitrum Sepolia	kleros-v2-core-testnet	`77xeh3UeBCzHokbVtkeaH42vXsFh6MRe4JpZSPddoXZo`
Devnet	Arbitrum Sepolia	kleros-v2-core-devnet	`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	`FktCcvKHN9mdcyNMK1jgnKwf5AwmVXka4kATxXX3HmKT`
Testnet	Arbitrum Sepolia	kleros-v2-drt-arbisep-testnet	`EZjJCfxBiQ9B9RtfQDTzNKx34nckSnBWDNaLZPficnHp`

V2 Product Subgraphs

Escrow V2

Environment	Network	Explorer Page	Subgraph ID
Mainnet	Arbitrum One	escrow-v2-neo	`96vpnRJbRVkzF6usMNYMMoziSZEfSwGEDpXNi2h9WBSW`
Devnet	Arbitrum Sepolia	escrow-v2-devnet	`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. Check the curate-v2 repository for the latest deployment.

V1 Subgraphs

These index V1 Kleros products still in active use.

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

Curate V1

Network	Explorer Page	Subgraph ID
Ethereum Mainnet	legacy-curate-mainnet	`A5oqWboEuDezwqpkaJjih4ckGhoHRoXZExqUbja2k1NQ`
Gnosis Chain	legacy-curate-gnosis	`9hHo5MpjpC1JqfD3BsgFnojGurXRHTrHWcUcZPPCo6m8`

The Curate application at 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 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 and the Kleros subgraph repositories on GitHub.

Querying Subgraphs

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

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();

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.

Query Examples

Common GraphQL queries for disputes, courts, and jurors

Subgraph Overview

Architecture and local development setup

Getting Started

V2 Architecture

Arbitrable Apps

Products

Cross-chain

Examples

Subgraph & Data

V2 Subgraphs (Arbitrum)

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

Dispute Template Registry Subgraph

V2 Product Subgraphs

Escrow V2

Curate V2

V1 Subgraphs

Curate V1

Proof of Humanity V1

Other V1 Products

Querying Subgraphs

Query Examples

Subgraph Overview

​V2 Subgraphs (Arbitrum)

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

​Dispute Template Registry Subgraph

​V2 Product Subgraphs

​Escrow V2

​Curate V2

​V1 Subgraphs

​Curate V1

​Proof of Humanity V1

​Other V1 Products

​Querying Subgraphs

Query Examples

Subgraph Overview

V2 Subgraphs (Arbitrum)

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

Dispute Template Registry Subgraph

V2 Product Subgraphs

Escrow V2

Curate V2

V1 Subgraphs

Curate V1

Proof of Humanity V1

Other V1 Products

Querying Subgraphs