> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

<AgentInstructions>

## Submitting Feedback

If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback:

POST https://docs.chainstack.com/feedback

```json
{
  "path": "/reference/getting-started-starknet",
  "feedback": "Description of the issue"
}
```

Only submit feedback when you have something specific and actionable to report.

</AgentInstructions>

# Starknet API reference: Pathfinder JSON-RPC quickstart

> Use the Starknet JSON-RPC API on Chainstack via Pathfinder nodes to query the Ethereum L2 ZK-rollup and run versioned RPC API calls.

<Info>
  **Feeder gateway deprecation on December 11, 2023**

  All the methods listed here are working example counterparts to the [deprecated feeder gateway](https://community.starknet.io/t/feeder-gateway-deprecation/100233). The interactive APIs are done based on the [Pathfinder node](https://github.com/eqlabs/pathfinder).

  Try out the Pathfinder-based interactive examples in each section and see the respective counterpart at the end of each section.
</Info>

## Starknet JSON-RPC version endpoints

Chainstack Starknet endpoints support sending requests to different JSON-RPC API versions. For versions, see the [Pathfinder GitHub repository](https://github.com/eqlabs/pathfinder/tree/main#json-rpc-api).

To send a request to a specific version, append your Chainstack Starknet endpoint with the version URL suffix. For example, `/rpc/v0_6`.

Check the following examples.

<CodeGroup>
  ```Text starknet_getNonce v0.4 theme={"system"}
  curl --request POST \
       --url https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d/rpc/v0_4 \
       --header 'content-type: application/json' \
       --data '
  {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "starknet_getNonce",
    "params": [
      {
        "block_number": 385940
      },
      "0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10"
    ]
  }
  '
  ```

  ```Text starknet_getNonce v0.5 theme={"system"}
  curl --request POST \
       --url https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d/rpc/v0_5 \
       --header 'content-type: application/json' \
       --data '
  {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "starknet_getNonce",
    "params": [
      {
        "block_number": 385940
      },
      "0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10"
    ]
  }
  '
  ```

  ```Text starknet_getNonce v0.6 theme={"system"}
  curl --request POST \
       --url https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d/rpc/v0_6 \
       --header 'content-type: application/json' \
       --data '
  {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "starknet_getNonce",
    "params": [
      {
        "block_number": 385940
      },
      "0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10"
    ]
  }
  '
  ```
</CodeGroup>

## What is the Starknet

Starknet is a decentralized, permissionless and scalable zk-rollup, extending the Ethereum blockchain's capabilities. It is designed to enhance scalability, reduce gas fees, and maintain a high level of security. Starknet uses zk-STARKs technology to achieve these goals, providing a scalable and decentralized solution for Layer-2 scaling.

Starknet provides a robust and efficient network with cross-chain bridges for seamless interactions.

## What is the Starknet API

The StarkNet API allows developers to communicate with the Starknet network.

<Check>
  ### Get your own node endpoint today

  [Start for free](https://console.chainstack.com/) and get your app to production levels immediately. No credit card required.

  You can sign up with your GitHub, X, Google, or Microsoft account.
</Check>

## How to start using the Starknet API

To use the Starknet API, you need access to a Starknet RPC node.

Follow these steps to deploy a Starknet RPC node, and find your endpoint credentials:

<Steps>
  <Step>
    [Sign up with Chainstack](https://console.chainstack.com/user/account/create).
  </Step>

  <Step>
    [Deploy a node](/docs/manage-your-networks).
  </Step>

  <Step>
    [View node access and credentials](/docs/manage-your-node#view-node-access-and-credentials).
  </Step>
</Steps>

Now you are ready to connect to Starknet and use the Starknet API to build.