# Subgraph

Idle uses a [subgraph](https://thegraph.com/docs/about/introduction#what-the-graph-is) for indexing and organizing data from the Yield Tranches `IdleCDO` smart contract. This subgraph can be found on The Graph hosted service and can be used to query Idle YTs data:

* **YTs subgraph** <https://thegraph.com/hosted-service/subgraph/samster91/idle-tranches>
* **Graphql endpoint**
  * Ethereum <https://api.thegraph.com/subgraphs/name/samster91/idle-tranches>
  * Polygon zkEVM [https://api.studio.thegraph.com/query/12583/idle-tranches-zkevm/version/latest ](<https://api.studio.thegraph.com/query/12583/idle-tranches-zkevm/version/latest >)
  * Optimism <https://api.thegraph.com/subgraphs/name/samster91/idle-tranches-optimism>
* **Code** <https://github.com/Idle-Labs/idle-tranches-subgraph>

<figure><img src="/files/SojJscaIqlPBnuAbHZ00" alt=""><figcaption></figcaption></figure>

### Useful entities

* ***TrancheInfos*****:** contains the data of each YTs tranche (type, apr, `virtualPrice`, `totalSupply`) updated every hour
* ***Tranche*****:** all deployed YTs tranches (id, type)

### Querying YTs

{% hint style="info" %}
Subgraph is case-sensitive. Remember to use all lowercase when inputting tranches' addresses.&#x20;
{% endhint %}

#### Example 1

To obtain the latest *TrancheInfos* you can use the following query

```graphql
{ 
    trancheInfos(orderBy:"timeStamp", orderDirection:"desc") { 
        id
        apr
        Tranche { 
            id 
        }
        timeStamp
        blockNumber
        totalSupply
        virtualPrice
    }
}
```

#### Example 2

To obtain the latest *TrancheInfos* for a specific tranche add a `where` filter. Let's query for example the Clearpool Portofino DAI Senior tranche `0xfc96989b3df087c96c806318436b16e44c697102`

```graphql
{ 
    trancheInfos(orderBy:"timeStamp", orderDirection:"desc", 
                 where:{ Tranche:"0xfc96989b3df087c96c806318436b16e44c697102" }) { 
        id
        apr
        Tranche { 
            id 
            CDO {
              id
            }
        }
        timeStamp
        blockNumber
        totalSupply
        virtualPrice
    }
}
```

For more info about GraphQL API, check [TheGraph Documentation](https://thegraph.com/docs/en/developer/graphql-api/).


---

# 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.idle.finance/developers/yield-tranches/subgraph.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.