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

# Upsert Seller Address

> Create or update the seller's address.

Upserts the seller's address and returns the full seller object.

## Path parameters

<ParamField path="id" type="string" required>
  The seller's ID.
</ParamField>

## Body parameters

<ParamField body="name" type="string">Address label.</ParamField>
<ParamField body="company" type="string">Company name.</ParamField>
<ParamField body="first_name" type="string">Contact first name.</ParamField>
<ParamField body="last_name" type="string">Contact last name.</ParamField>
<ParamField body="address_1" type="string">Street address.</ParamField>
<ParamField body="address_2" type="string">Apartment, suite, etc.</ParamField>
<ParamField body="city" type="string">City.</ParamField>
<ParamField body="country_code" type="string">Two-letter country code.</ParamField>
<ParamField body="province" type="string">Province or state.</ParamField>
<ParamField body="postal_code" type="string">Postal code.</ParamField>
<ParamField body="phone" type="string">Phone number.</ParamField>
<ParamField body="metadata" type="object">Custom key-value pairs.</ParamField>
<ParamField body="additional_data" type="object">Custom data passed to workflow hooks.</ParamField>

## Query parameters

<ParamField query="fields" type="string">
  Comma-separated fields to include in the response.
</ParamField>

## Response

<ResponseField name="seller" type="object">
  <Expandable title="properties">
    <ResponseField name="id" type="string">The seller's ID.</ResponseField>
    <ResponseField name="address" type="object">The updated address.</ResponseField>
  </Expandable>
</ResponseField>

<RequestExample>
  ```bash cURL theme={null}
  curl -X POST 'http://localhost:9000/vendor/sellers/sel_01HXYZ/address' \
    -H 'Authorization: Bearer <token>' \
    -H 'x-seller-id: <seller_id>' \
    -H 'Content-Type: application/json' \
    -d '{"address_1": "123 Main St", "city": "New York", "country_code": "us", "postal_code": "10001"}'
  ```

  ```ts JS Client theme={null}
  const { seller } = await client.vendor.sellers.$id.address.mutate({
    $id: "sel_01HXYZ",
    address_1: "123 Main St",
    city: "New York",
    country_code: "us",
    postal_code: "10001",
  })
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  {
    "seller": {
      "id": "sel_01HXYZ",
      "name": "Acme Store",
      "address": {
        "address_1": "123 Main St",
        "city": "New York",
        "country_code": "us",
        "postal_code": "10001"
      }
    }
  }
  ```
</ResponseExample>