> For the complete documentation index, see [llms.txt](https://utxo-global.gitbook.io/utxo-global/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://utxo-global.gitbook.io/utxo-global/developer-tools/ckb-advanced-indexer-api/api-reference/faq.md).

# FAQ

<details>

<summary>Why don't I see any data when using the indexer API?</summary>

First, make sure that your node is synced to the latest block. You can check the tip by calling the following node RPC:

```sh
curl --location 'https://testnet-ckb-720a.utxo.global' \
--header 'Content-Type: application/json' \
--data '{
  "id": 42,
  "jsonrpc": "2.0",
  "method": "get_indexer_tip",
  "params": []
}'
```

This command will return the current tip of the indexer. If you're not at the latest block, the data might not be available. If the issue persists, please join our [Telegram group](https://t.me/utxoglobal) to ask for support.

</details>

<details>

<summary>How do I switch between Testnet and Mainnet?</summary>

You need to adjust the `INDEXER_API` variable to point to the appropriate base URL. For Testnet, use [`https://indexer-ckb-720a.utxo.global`](https://indexer-ckb-720a.utxo.global), and for Mainnet, use [`https://indexer.utxo.global`](https://indexer.utxo.global).

</details>

<details>

<summary>What is the rate limit for API calls?</summary>

The rate limit depends on your API key. The **Basic** key allows up to 60 requests per minute, while the **Pro** key offers higher limits and additional endpoints.

</details>

<details>

<summary>How do I get access to the API?</summary>

You need to register through the [Google Form](https://forms.gle/V9nTGGVbJB3kAHQQ9) provided for either Testnet or Mainnet. Once registered, you will receive an API key for the appropriate network.

</details>

<details>

<summary>What should I do if I encounter unexpected behavior?</summary>

If you encounter any issues or unexpected behavior, first verify that your node is synced by checking the indexer tip (as mentioned in the first question). If everything appears correct and the issue persists, reach out to the support team on [Telegram](https://t.me/utxoglobal).

</details>