> For the complete documentation index, see [llms.txt](https://docs.getblock.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getblock.io/api-reference/monero-xmr/get_txpool_backlog-monero.md).

# get\_txpool\_backlog - Monero

This method returns the current backlog of transactions in the mempool, including projected confirmation times.

## Parameters

* None

## Request Example

{% tabs %}
{% tab title="cURL" %}

```bash
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "get_txpool_backlog",
    "params": {},
    "id": "getblock.io"
}'
```

{% endtab %}

{% tab title="JavaScript (Axios)" %}

```javascript
import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "get_txpool_backlog",
    "params": {},
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data, null, 2)))
    .catch(error => console.log(error));
```

{% endtab %}

{% tab title="Python (Requests)" %}

```python
import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "get_txpool_backlog",
    "params": {},
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)
```

{% endtab %}

{% tab title="Rust (Reqwest)" %}

```rust
use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "get_txpool_backlog",
        "params": {},
        "id": "getblock.io"
});

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}
```

{% endtab %}
{% endtabs %}

## Response Example

{% code overflow="wrap" %}

```json
{
    "id": "getblock.io",
    "jsonrpc": "2.0",
    "result": {
        "backlog": [
            {
                "blob_size": 1500,
                "fee": 100000000,
                "time_in_pool": 60,
                "weight": 1500
            }
        ],
        "status": "OK",
        "untrusted": false
    }
}
```

{% endcode %}

## Response Parameters

| Field                            | Type         | Description                                   |
| -------------------------------- | ------------ | --------------------------------------------- |
| result.backlog                   | array        | Array of mempool transactions                 |
| result.backlog\[].blob\_size     | unsigned int | Serialized transaction size in bytes          |
| result.backlog\[].weight         | unsigned int | Transaction weight (used for fee calculation) |
| result.backlog\[].fee            | unsigned int | Transaction fee in atomic units               |
| result.backlog\[].time\_in\_pool | unsigned int | Seconds the transaction has been in the pool  |

## Use Cases

* Mempool congestion monitoring
* Fee oracle inputs
* Wallet UX showing confirmation-time estimates

## Error Handling

| Status Code | Error Message     | Cause                               |
| ----------- | ----------------- | ----------------------------------- |
| 403         | Forbidden         | Missing or invalid `<ACCESS-TOKEN>` |
| 429         | Too Many Requests | Rate limit exceeded for your plan   |

## SDK Integration

{% tabs %}
{% tab title="monero-javascript" %}

```javascript
import monerojs from 'monero-javascript';

const daemon = await monerojs.connectToDaemonRpc('https://go.getblock.io/<ACCESS-TOKEN>/');

// Most methods are exposed directly on the daemon client. For raw access:
const result = await daemon.getDaemonConnection().sendJsonRequest('get_txpool_backlog', {});
console.log(result);
```

{% endtab %}

{% tab title="monero-python" %}

```python
from monero.backends.jsonrpc import JSONRPCDaemon
from monero.daemon import Daemon

backend = JSONRPCDaemon(host='go.getblock.io', port=443, path='/<ACCESS-TOKEN>/', protocol='https')
daemon = Daemon(backend)

# For methods covered by the typed API, use the daemon attribute directly.
# For raw RPC access:
result = backend.raw_request('get_txpool_backlog', {})
print(result)
```

{% endtab %}
{% endtabs %}


---

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