# List of External Builders

{% hint style="info" %}
bloXroute works with more than twenty external builders to submit private transactions and bundles. Searchers can send requests directly to a builder that is listed as an external builder by specifying the name in the `mev_builders` parameter, or send to all builders by specifying **`all`** in the `mev_builders` parameter.
{% endhint %}

### REQUEST

**Method: `get_external_mev_builders`**

Returns a list of external builders that accept private transactions and MEV bundles.

**Parameters:** None

#### Examples

{% tabs %}
{% tab title="HTTPS POST" %}

```bash
curl https://api.blxrbdn.com \
    -X POST \
    -H "Content-Type: application/json" \
    -H "Authorization: <YOUR-AUTHORIZATION-HEADER>" \
    -d '{
        "id": "1", 
        "method": "get_external_mev_builders", 
        "params": {}
        }'
     
```

{% endtab %}

{% tab title="wscat" %}

```bash
wscat -c wss://api.blxrbdn.com/ws --header "Authorization: <YOUR-AUTHORIZATION-HEADER>" --no-check 
> {
	"jsonrpc": "2.0", 
	"id": "1",
	"method": "get_external_mev_builders", 
	"params": {}
  }

```

{% endtab %}
{% endtabs %}

### RESPONSE

<table><thead><tr><th>Result Field</th><th>Description</th><th data-hidden></th><th data-hidden></th></tr></thead><tbody><tr><td><strong><code>mevBundleBuilders</code></strong></td><td>List of builders that accept MEV bundles. <strong><code>builderPublicKey</code></strong> entry in this field can be empty is builder's public key is unknown.</td><td></td><td></td></tr><tr><td><strong><code>privateTxBuilders</code></strong></td><td>List of builders that accept private transactions. <strong><code>builderPublicKey</code></strong> entry in this field can be empty is builder's public key is unknown.</td><td></td><td></td></tr></tbody></table>

```bash
{
    "id": "1",
    "result": {
        "mevBundleBuilders": [
            {
                "builderName": "titan",
                "builderPublicKey": "0xb67eaa5efcfa1d17319c344e1e5167811afbfe7922a2cf01c9a361f465597a5dc3a5472bd98843bac88d2541a78eab08",
                "supportsUUIDBundles": true
            },
            {
                "builderName": "beaverbuild",
                "builderPublicKey": "0x96a59d355b1f65e270b29981dd113625732539e955a1beeecbc471dd0196c4804574ff871d47ed34ff6d921061e9fc27",
                "supportsUUIDBundles": true
            },
            {
                "builderName": "rsync-builder",
                "builderPublicKey": "0x83d3495a2951065cf19c4d282afca0a635a39f6504bd76282ed0138fe28680ec60fa3fd149e6d27a94a7d90e7b1fb640",
                "supportsUUIDBundles": true
            },
            ......
        ],
        "privateTxBuilders": [
            {
                "builderName": "rsync-builder",
                "builderPublicKey": "0x83d3495a2951065cf19c4d282afca0a635a39f6504bd76282ed0138fe28680ec60fa3fd149e6d27a94a7d90e7b1fb640"
            },
            {
                "builderName": "beaverbuild",
                "builderPublicKey": "0x96a59d355b1f65e270b29981dd113625732539e955a1beeecbc471dd0196c4804574ff871d47ed34ff6d921061e9fc27"
            },
            {
                "builderName": "titan",
                "builderPublicKey": "0xb67eaa5efcfa1d17319c344e1e5167811afbfe7922a2cf01c9a361f465597a5dc3a5472bd98843bac88d2541a78eab08"
            },
            ......
        ]
    },
    "jsonrpc": "2.0"
}
```


---

# 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.bloxroute.com/eth/submit-bundles/list-of-external-builders.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.