# FAQ & Resources

## Open API FAQ

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<summary>Could you explain us which apis or data sources we could use to integrate your data on our data aggregator dashboard.</summary>

We have an API that can return different exchange data such as what markets are available, candle data like OHLC, etc <https://docs.dydx.trade/developers/indexer/indexer_api>

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<summary>What are the APIs for volume, fees paid by traders, revenue earned and tvl if you have products with tvl?</summary>

1. This shows the field volume24H for each of the markets <https://indexer.dydx.trade/v4/perpetualMarkets>
2. It seems like numia has this in big query if you want to set something up fast. the link = <https://www.datalenses.zone/chain/dydx/business>

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<summary>Is there a way to get user's BuyingPower from API or from SDK?</summary>

You can get equity and freeCollateral from the /v4/addresses/\<address> endpoint <https://docs.dydx.trade/developers/indexer/indexer_api#getaddress>. It would not make sense to get BuyingPower from API since each market has different maximum leverage.

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<summary>To access dYdX Chain on Numia you need to do the following steps:</summary>

1. Go to Google’s BigQuery site and click ‘Try BigQuery Free’
2. Create an Account - You will receive $300 of Free Trial credit (for compute), and there is no autocharge after the trial expires.
3. Go to the Search Bar at the top and click ‘BigQuery’
4. Hit +ADD and click ‘Star a project by name’ (second option under Additional sources)
5. Type in *numia-data* and press ‘Star’
6. numia-data is now saved as one of your resources! Expand it and scroll down to ‘dydx\_mainnet’ to view dYdX Chain data (you can also view other Cosmos data)
7. Example query:
   * Click ‘dydx\_match’ —> QUERY —> ‘In new tab’
   * You can now edit the query to your liking

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