# Subgraph Info

Hop has a GraphQL API Endpoint hosted by [The Graph](https://thegraph.com/docs/about/introduction#what-the-graph-is) called a subgraph for indexing and organizing data from the Sablier smart contracts.

This subgraph is can be used to query Hop data.

Subgraph information is serviced by a decentralized group of server operators called Indexers.

## Subgraph Repo

* <https://github.com/hop-protocol/subgraph>

## Subgraph API links

* Ethereum: [`https://subgraph.hop.exchange/ethereum`](https://subgraph.hop.exchange/ethereum)
* Arbitrum One: [`https://subgraph.hop.exchange/arbitrum`](https://subgraph.hop.exchange/arbitrum)
* Arbitrum Nova: [`https://subgraph.hop.exchange/nova`](https://subgraph.hop.exchange/nova)
* Optimism: [`https://subgraph.hop.exchange/optimism`](https://subgraph.hop.exchange/optimism)
* Base: [`https://subgraph.hop.exchange/base`](https://subgraph.hop.exchange/base)
* Gnosis Chain: [`https://subgraph.hop.exchange/gnosis`](https://subgraph.hop.exchange/gnosis)
* Polygon PoS: [`https://subgraph.hop.exchange/polygon`](https://subgraph.hop.exchange/polygon)
* Polygon zkEVM: [`https://subgraph.hop.exchange/polygonzk`](https://subgraph.hop.exchange/polygonzk)
* Linea: [`https://subgraph.hop.exchange/linea`](https://subgraph.hop.exchange/linea)

## Tracking transfers

See page

[queries](https://docs.hop.exchange/developer-docs/subgraphs/queries "mention")