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

# Deploying an Indexer (Subgraph) on Hedera with The Graph

> Guide to deploying a subgraph on Hedera using The Graph for efficient blockchain data indexing and querying.

Deploying a subgraph on Hedera with Mobula’s infrastructure is a simple process. This guide will take you through the steps to get your subgraph running on the Hedera network.

### What you’ll need

* Fundamental understanding of The Graph and subgraphs.
* Your subgraph project files ready.
* The Graph CLI installed
* A Mobula API key (for authentication)

### Walkthrough

<Steps>
  <Step title="Prepare Your Subgraph">
    Make sure your subgraph is configured for Hedera. Update your `subgraph.yaml` file to point to Hedera’s specific contracts and events. If you don’t have a subgraph, you can clone the Uniswap V2 (SaucerSwap) subgraph template and customize it for Hedera:

    ```bash theme={null}
    git clone https://github.com/MobulaFi/univ2-subgraph-hedera
    ```
  </Step>

  <Step title="Install Dependencies">
    Make sure you have The Graph CLI installed:

    ```bash theme={null}
    npm install -g @graphprotocol/graph-cli
    ```
  </Step>

  <Step title="Install Mobula CLI">
    Install our CLI tool using npm:

    ```bash theme={null}
    npm i mobula-cli
    ```
  </Step>

  <Step title="Setup API Key">
    Configure your API key with the CLI. You can get your API key from the [Dashboard](https://admin.mobula.io).
    Please refer to the [authentication section](/indexing-stream/authentification) for detailed steps on obtaining your API key.

    ```bash theme={null}
    mob apikey set
    ```
  </Step>

  <Step title="Build Your Subgraph">
    Compile your subgraph before deployment:

    ```bash theme={null}
    graph codegen && graph build
    ```
  </Step>

  <Step title="Deploy your subgraph">
    Deploy your subgraph using the Mobula CLI:

    ```bash theme={null}
    mob deploy -n subgraphName
    ```
  </Step>

  <Step title="Monitor Deployment">
    After deployment, you'll receive a URL to monitor your subgraph's indexing progress and status.
  </Step>
</Steps>

### Best Practices

* Keep your subgraph regularly updated to ensure it remains compatible with the latest Hedera network changes.
* Thoroughly test your subgraph on a testnet before deploying to the mainnet.
* Continuously monitor its performance and optimize queries for greater efficiency.

### Troubleshooting

If you encounter issues during deployment:

* Review your `subgraph.yaml` configuration.
* Confirm that you're using the correct network name and Mobula node URLs.
* Ensure your API key is valid and has the required permissions.

Need help? Our support team is available to assist with any questions or deployment challenges you may face.

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