# FAQ

### **What can I build with BENQI?**

Answer

### **How could I get started building?**

Answer

### **How can I find the sAVAX to AVAX exchange rate?** 

To check the exchange rate for sAVAX to AVAX, click the following link: [sAVAX to AVAX Rate](https://snowtrace.dev/address/0x2b2C81e08f1Af8835a78Bb2A90AE924ACE0eA4bE#readProxyContract-43114)

This can be read from the contract using **Function 14:** `sAVAX to AVAX`**or Function 18:** `AVAX to sAVAX`

### I**s there a contract call for burning sAVAX after users have redeemed it?**

Burning sAVAX is automated and only occurs when redeeming AVAX. Users cannot burn sAVAX directly. The redemption process triggers the burn within the smart contract.

### H**ow do I get the exchange rate history of sAVAX/AVAX?**

No one can burn on their own. The only way to burn is by redeeming AVAX and that is automated on the smart contract.

### H**ow do you create a liquidator bot?**

You can refer to the Google Compound V2 liquidation guide for help in setting up a liquidator bot. This should direct you to [their Docs.](https://docs.compound.finance/v2/comptroller/)

### D**o you have an API to fetch data, or do you have any plans to create one?**

BENQI does not have an API for data fetching. 

Historical data is pulled from the subgraph, while real-time data is pulled directly from the smart contracts.

### Is **there a subgraph to fetch open positions on BENQI's lending market?**

Yes, you can use the following subgraph to fetch open positions and other data: [BENQI Subgraph](https://api.thegraph.com/subgraphs/name/benqi-fi/benqi21)

### H**ow did BENQI implement Proof of Reserves and Keepers?**

Keepers monitor the system by calling `checkUpkeep`, and if a need for action is detected, they call `performUpkeep`. 

The implementation can be viewed here:\
[Proof of Reserves and Keeper Implementation](https://snowtrace.io/address/0xaad2d03809430eaf2ec17bc6f4d2260e6e409cb7/contract/43114/code)

### W**hat about the Chainlink price feed for sAVAX in USD on Avalanche?**

That can be found here: [Chainlink Price Feed (sAVAX/USD)](https://snowtrace.dev/address/0x2854Ca10a54800e15A2a25cFa52567166434Ff0a)\
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It can be read using **Function 8:** `sAVAX to AVAX`