> For the complete documentation index, see [llms.txt](https://docs.circular.bot/circular-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.circular.bot/circular-docs/api/fast/transactions.md).

# Endpoint

<mark style="color:green;">`POST`</mark> [`https://fast.circular.bot/transactions`](https://fast.circular.bot/transactions)

Optimized transaction landing

**Headers**

<pre class="language-json"><code class="lang-json"><strong>{
</strong>    "Content-Type": "application/json",
    "x-api-key": "your-api-key"
}
</code></pre>

**Body**

```json
{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "sendTransaction",
    "params": [
            "...Base58 or Base64 tx",
            {
                "frontRunningProtection": false // false = SWQOS + Jito, true = only Jito
            }
    ]
}
```

**Response**

{% tabs %}
{% tab title="200" %}

<pre class="language-json"><code class="lang-json"><strong>{
</strong>    "jsonrpc": "2.0",
    "result": {
        "signature": "48GewyfenTDHJmg6xn3Yr...",
        "uuid": "9d56d81d76f441f2d06feb2..."
    },
    "id": 1
}
</code></pre>

{% endtab %}
{% endtabs %}

**Informations:**

* Requests per second: 25/50/100
* Available plans: [**FREE**](https://www.circular.bot/plans), [**PREMIUM**](https://www.circular.bot/plans), [**PRO**](https://www.circular.bot/plans)