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> For a complete documentation index, see https://mailchimp.com/developer/marketing/api/sms-campaigns/upsert-content/llms.txt.
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# Set SMS campaign content

PUT https://api.mailchimp.com/3.0/sms-campaigns/{sms_campaign_id}/content
Content-Type: application/json

Set the content for an SMS campaign.

Reference: https://mailchimp.com/developer/marketing/api/sms-campaigns/upsert-content

## Authentication

- `Authorization` header (bearer token, required) — Authorization using a Mailchimp API key (a.k.a. Bearer token)
- `Authorization` header (bearer token, required) — Authorization using OAuth

## Request

### Path parameters

- `sms_campaign_id` (string, required) — The unique id for the SMS campaign.

### Body (application/json)

This endpoint expects an object.

- `message_body` (string, required) — The SMS message body.
- `media` (list of 30SmsCampaignsSmsCampaignIdContentPutRequestBodyContentApplicationJsonSchemaMediaItems, optional) — Attached images or files. Limited to one item. Omitting this field or sending an empty array removes any existing media; to keep the current media while updating other fields, re-send the media array.

## Response

### 200

- `content_type` (string, optional) — The content type of the message.
- `sender` (string, optional) — The sender identifier for the message.
- `optout_message_language` (string, optional) — The language of the opt-out message.

## Types

### 30SmsCampaignsSmsCampaignIdContentPutRequestBodyContentApplicationJsonSchemaMediaItems

- `url` (string, optional) — The URL of the media file.

## Examples

**Request**

```json
{
  "message_body": "string"
}
```

**Response**

```json
{
  "_links": [
    {
      "href": "string",
      "method": "GET",
      "rel": "string",
      "schema": "string",
      "targetSchema": "string"
    }
  ],
  "estimated_segments": 1,
  "media": [
    {
      "url": "string"
    }
  ],
  "merge_fields": [
    "string"
  ],
  "message_body": "string",
  "properties": {
    "content_type": "string",
    "optout_message_language": "string",
    "sender": "string"
  },
  "source": {
    "id": "string",
    "type": "string"
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.mailchimp.com/3.0/sms-campaigns/sms_campaign_id/content"

payload = { "message_body": "string" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.put(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.mailchimp.com/3.0/sms-campaigns/sms_campaign_id/content';
const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: '{"message_body":"string"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.mailchimp.com/3.0/sms-campaigns/sms_campaign_id/content"

	payload := strings.NewReader("{\n  \"message_body\": \"string\"\n}")

	req, _ := http.NewRequest("PUT", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.mailchimp.com/3.0/sms-campaigns/sms_campaign_id/content")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"message_body\": \"string\"\n}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.put("https://api.mailchimp.com/3.0/sms-campaigns/sms_campaign_id/content")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"message_body\": \"string\"\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://api.mailchimp.com/3.0/sms-campaigns/sms_campaign_id/content', [
  'body' => '{
  "message_body": "string"
}',
  'headers' => [
    'Authorization' => 'Bearer <token>',
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.mailchimp.com/3.0/sms-campaigns/sms_campaign_id/content");
var request = new RestRequest(Method.PUT);
request.AddHeader("Authorization", "Bearer <token>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"message_body\": \"string\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "Bearer <token>",
  "Content-Type": "application/json"
]
let parameters = ["message_body": "string"] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.mailchimp.com/3.0/sms-campaigns/sms_campaign_id/content")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "PUT"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```

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