# /v1 - Aptos

This endpoint retrieves the latest information from the Aptos blockchain ledger, such as current chain ID, node role, latest and oldest ledger versions, epoch, block height, and more.\
In short, it provides an overview of Aptos and its health status.

## Supported Network

* Mainnet

***

## Parameters

* None

## Request

**URL (endpoint)**

```bash
https://go.getblock.io/
```

**Example (cURL)**

```bash
curl --location 'https://go.getblock.io/<ACCESS_TOKEN>/v1/info'
```

## Response

```json
{
  "block_height": "58851650",
  "chain_id": 1,
  "epoch": "2796",
  "git_hash": "6568c5ee6a58b4f96c0780d4f66d7e573e61c418",
  "ledger_timestamp": "1685696086534090",
  "ledger_version": "152087593",
  "node_role": "full_node",
  "oldest_block_height": "1101178",
  "oldest_ledger_version": "2287593"
}
```

## Response Definition

| Value                   | Data type | Description                                            |
| ----------------------- | --------- | ------------------------------------------------------ |
| `chain_id`              | integer   | ID of the blockchain                                   |
| `epoch`                 | string    | Current epoch number                                   |
| `ledger_version`        | string    | The latest version of the ledger                       |
| `oldest_ledger_version` | string    | The earliest version of the ledger                     |
| `ledger_timestamp`      | string    | Timestamp of the latest ledger version in microseconds |
| `node_role`             | string    | Role of this node in the network                       |
| `oldest_block_height`   | string    | Lowest block height available                          |
| `block_height`          | string    | Current block height                                   |
| `git_hash`              | string    | Git hash of the node build                             |

## Use Case

The `/v1/info` endpoint is useful for checking if a node is online and responding.\
For example:

* Developers can verify the latest block or ledger version to ensure the node is up-to-date.
* Applications can notify users about the health of the blockchain, such as showing a modal alerting them to the current state when they log in to a dApp.

## Code Example (Axios)

```js
import axios from 'axios'

let config = {
  method: 'get',
  maxBodyLength: Infinity,
  url: 'https://go.getblock.io/<ACCESS_TOKEN>/v1/info',
  headers: {}
};

axios.request(config)
.then((response) => {
  console.log(JSON.stringify(response.data));
})
.catch((error) => {
  console.log(error);
});
```

> Replace `<ACCESS_TOKEN>` with your actual access token from GetBlock.

## Error Handling

When using this endpoint, you may encounter:

* **404** → Incorrect or incomplete access token.
* **500** → Network issues.

**How to fix**:

* Use a stable and strong network connection.
* Check or re-copy your access token.
* Verify the URL to ensure it is correct and complete.

## Integration

It is recommended to use this endpoint first to check the current status of the blockchain before integrating other endpoints into your application.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.getblock.io/api-reference/aptos-apt/apt_v1.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.