> ## Documentation Index
> Fetch the complete documentation index at: https://cobo.com/developers/llms.txt
> Use this file to discover all available pages before exploring further.

# Bind Addresses

> <Note>This content applies to WaaS 1.0 only. We highly recommend that you upgrade to [WaaS 2.0](https://www.cobo.com/developers/v2/guides/overview/introduction).</Note> This endpoint allows a prime broker to bind a list of chain addresses to a user account. The endpoint requires a POST request with a JSON payload containing the user ID and a list of chain addresses. If the payload is valid, the endpoint returns a JSON response with the result of the binding operation.

#### Request

<ParamField body="user_id" type="String" required>The ID of the user account to bind the addresses to.</ParamField>
<ParamField body="addresses" type="Json" required>A list of chain addresses to bind to the user account.</ParamField>

#### Response

<ResponseField name="success" type="bool">request successful or failed</ResponseField>

<ResponseField name="result" type="object">
  <Expandable title="object">
    <ResponseField name="pubkey" type="String">The bound Auth public key, or empty if the binder\_id has expired</ResponseField>

    <ResponseField name="addresses" type="object[]">
      <Expandable title="object">
        <ResponseField name="chain_coin" type="String">bound coin</ResponseField>
        <ResponseField name="address" type="String">bound address</ResponseField>
      </Expandable>
    </ResponseField>
  </Expandable>
</ResponseField>

<RequestExample>
  ```python Python theme={null}
  request(
      "POST",
      "/v1/custody/guard/bind_addresses/",
      {
          "user_id": "cobo_168108513539918",
          "addresses": '[{"chain_coin": "VET", "address": "0x4baf0837d4c8bccd79dfa6fd60f4985ef9b696cc"}]'
      },
      api_key, api_secret, host
  )
  ```

  ```javascript JavaScript theme={null}
  coboFetch('POST', '/v1/custody/guard/bind_addresses/',
          {
            "user_id": "cobo_168108513539918",
            "addresses": '[{"chain_coin": "VET", "address": "0x4baf0837d4c8bccd79dfa6fd60f4985ef9b696cc"}]'
          },
          api_key, api_secret, host
      ).then(res => {
          res.json().then((data)=>{
              console.log(JSON.stringify(data, null, 4));
          })
      }).catch(err => {
          console.log(err)
      });
  ```

  ```go Go theme={null}
  Request("POST", "/v1/custody/guard/bind_addresses/", map[string]string{
      "user_id": "cobo_168108513539918",
      "addresses": '[{"chain_coin": "VET", "address": "0x4baf0837d4c8bccd79dfa6fd60f4985ef9b696cc"}]'
  })
  ```
</RequestExample>

<ResponseExample>
  ```json theme={null}
  {
    "success": true,
    "result": {
      "pubkey": "480da241874516ca9a25b1776e2b3ce6d2d5ea184d9a83e28874e57d4a2786ea1db059aefb9023cf7775da68c5381cf401c128aa967927c3abc46c7545c90438",
      "addresses": [
        {
          "chain_coin": "ETH",
          "address": "0x123"
        }
        …
      ]
    }
  }
  ```
</ResponseExample>