# Read Data from Data Feeds on Starknet using Starknet Foundry
Source: https://docs.chain.link/data-feeds/starknet/tutorials/snfoundry/read-data

> For the complete documentation index, see [llms.txt](/llms.txt).

In this example, you will read from a Chainlink price feed on Starknet using the Starknet Foundry toolkit. You will call the `latest_round_data` function on the ETH / USD aggregator proxy contract to read the latest round of data.

## Requirements

Make sure you have the [Starknet Foundry](https://github.com/foundry-rs/starknet-foundry) toolkit installed. You can check your current version by running snforge --version or sncast --version in your terminal. Follow the [installation](https://github.com/foundry-rs/starknet-foundry#installation) guide if necessary.

## Tutorial

Run the following command to read data from the ETH / USD data feed proxy contract:

```bash
sncast \
  --url https://starknet-sepolia.public.blastapi.io/rpc/v0_7 \
  call \
  --contract-address 0x228128e84cdfc51003505dd5733729e57f7d1f7e54da679474e73db4ecaad44 \
  --function "latest_round_data" \
```

Expect an output similar to the following:

```bash
command: call
response: [0x10000000000000000000000000000320c, 0x5293770eb1, 0xd44d, 0x6606b8cc, 0x6606b8a2]
```

The example output contains an array with the hex-encoded latest round of data for the ETH / USD price feed. The array contains the following values:

| Value name   | Hex-encoded value                     | Decoded value                             | Description                                                                                                      |
| ------------ | ------------------------------------- | ----------------------------------------- | ---------------------------------------------------------------------------------------------------------------- |
| `round_id`   | `0x10000000000000000000000000000320c` | `340282366920938463463374607431768224268` | The unique identifier of the data round                                                                          |
| `answer`     | `0x5293770eb1`                        | `354661371569`                            | The actual data provided by the data feed, representing the latest price of an asset in the case of a price feed |
| `block_num`  | `0xd44d`                              | `54349`                                   | The block number at which the data was recorded on the blockchain                                                |
| `started_at` | `0x6606b8cc`                          | `1711716556`                              | The Unix timestamp indicating when the data round started                                                        |
| `updated_at` | `0x6606b8a2`                          | `1711716514`                              | The Unix timestamp indicating when the data was last updated                                                     |

For a complete list of Chainlink Price Feeds available on Starknet, see the [Price Feed Contract Addresses](/data-feeds/price-feeds/addresses?network=starknet) page.

Note: This example uses a [Blast API](https://blastapi.io/public-api/starknet) RPC endpoint. You can interact with the network using any other Starknet Sepolia RPC provider, such as [Alchemy](https://www.alchemy.com/starknet) or [Infura](https://www.infura.io/networks/ethereum/starknet).