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

# Run the Ponder and Portal example

> Run a Ponder indexer that uses SQD Portal for its historical backfill.

The portal-ponder repository includes a bounded Euler V2 indexer that runs without an API key or environment file. It uses the public Portal for history and a public archive RPC for `readContract` calls.

You need Node.js 18.14 or newer and npm.

<Steps>
  <Step title="Clone the repository">
    ```bash theme={"system"}
    git clone https://github.com/subsquid-labs/portal-ponder.git
    cd portal-ponder/examples/euler-subgraph
    ```
  </Step>

  <Step title="Install and run">
    ```bash theme={"system"}
    npm install
    npm run dev
    ```

    Wait for Ponder to report that indexing is complete. Keep the process running for the next step.
  </Step>

  <Step title="Check the indexed rows">
    In another terminal, run:

    ```bash theme={"system"}
    npm run summary
    ```

    The repository's verified demo result is:

    ```text theme={"system"}
    39 vaults · 504 deposits · 163 withdraws · 185 borrows · 35 repays · 0 liquidations · 900 vault status updates · 887 actions indexed from the SQD Portal
    ```

    You can also open `http://localhost:42069/graphql` while the development server is running.
  </Step>
</Steps>

## What to inspect

The example's `ponder.config.ts` contains the integration point:

```ts theme={"system"}
import { createConfig } from "@subsquid/ponder";

export default createConfig({
  chains: {
    mainnet: {
      id: 1,
      rpc: process.env.PONDER_RPC_URL_1 ?? "https://eth.drpc.org",
      portal:
        process.env.PORTAL_URL_1 ??
        "https://portal.sqd.dev/datasets/ethereum-mainnet",
    },
  },
});
```

The factory, schema, handlers, `readContract` calls, and GraphQL API use normal Ponder APIs. The repository pins a tested `@subsquid/ponder` release in the example's `package.json`.

The public Portal and public RPC are shared services. Use your own RPC and dedicated Portal capacity for sustained workloads. To update an existing project, continue with [Migrate a Ponder app](/en/sdk/alternative-clients/ponder/guides/migrate).