# 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](/developer-docs/subgraphs/queries.md)


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.hop.exchange/developer-docs/subgraphs/subgraph-info.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.