> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.simplified.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.simplified.com/_mcp/server.

# API · Assets · Create a persistent asset from a remote URL or a local file

POST https://api.simplified.com/api/v1/assets/from-url
Content-Type: application/json

Create a persistent workspace asset from a remote `url` the server
downloads.

To add a file from your own machine, do not call this tool — use
`signAssetUpload`, PUT the bytes to the signed URL it returns, then
`registerAsset`. (`path` exists for the `smp` command-line tool only;
it cannot work over MCP, where the file is on a different machine.)

Processing is async (S3 upload + thumbnail generation via Celery). The
returned asset UUID is usable immediately — e.g. in `createProjectItem`
`data.assets[]` — but poll `getAsset` until `status=4` (DONE) before
relying on the stored URLs.

Common use: persist a transient AI-generated image (from `generateImage`)
so it can be saved to a project, published, or opened in the editor.


Reference: https://docs.simplified.com/api-reference/platform/assets/create-asset

## Authentication

- `Authorization` header (required) (prefixed with ` Api-Key   `) — Header authentication of the form `Api-Key  <token>`
- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Body (application/json)

This endpoint expects a CreateAssetRequest.

- `CreateAssetRequest`

## Response

### 201

Asset created — processing asynchronously

- `any`

## Errors

### 400 Bad Request Error

Invalid URL or unsupported image format

- `any`

### 401 Unauthorized Error

Unauthorized

- `any`

## Examples

**Request**

```json
{
  "name": "Spring Campaign — Benefit-led",
  "url": "https://cdn.example.com/generated-ad-creative.png"
}
```

**SDK Code**

```python Assets_createAsset_example
import requests

url = "https://api.simplified.com/api/v1/assets/from-url"

payload = {
    "name": "Spring Campaign — Benefit-led",
    "url": "https://cdn.example.com/generated-ad-creative.png"
}
headers = {
    "Authorization": "Api-Key  <apiKey>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript Assets_createAsset_example
const url = 'https://api.simplified.com/api/v1/assets/from-url';
const options = {
  method: 'POST',
  headers: {Authorization: 'Api-Key  <apiKey>', 'Content-Type': 'application/json'},
  body: '{"name":"Spring Campaign — Benefit-led","url":"https://cdn.example.com/generated-ad-creative.png"}'
};

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

```go Assets_createAsset_example
package main

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

func main() {

	url := "https://api.simplified.com/api/v1/assets/from-url"

	payload := strings.NewReader("{\n  \"name\": \"Spring Campaign — Benefit-led\",\n  \"url\": \"https://cdn.example.com/generated-ad-creative.png\"\n}")

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

	req.Header.Add("Authorization", "Api-Key  <apiKey>")
	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 Assets_createAsset_example
require 'uri'
require 'net/http'

url = URI("https://api.simplified.com/api/v1/assets/from-url")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Api-Key  <apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"name\": \"Spring Campaign — Benefit-led\",\n  \"url\": \"https://cdn.example.com/generated-ad-creative.png\"\n}"

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

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

HttpResponse<String> response = Unirest.post("https://api.simplified.com/api/v1/assets/from-url")
  .header("Authorization", "Api-Key  <apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"Spring Campaign — Benefit-led\",\n  \"url\": \"https://cdn.example.com/generated-ad-creative.png\"\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.simplified.com/api/v1/assets/from-url', [
  'body' => '{
  "name": "Spring Campaign — Benefit-led",
  "url": "https://cdn.example.com/generated-ad-creative.png"
}',
  'headers' => [
    'Authorization' => 'Api-Key  <apiKey>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp Assets_createAsset_example
using RestSharp;

var client = new RestClient("https://api.simplified.com/api/v1/assets/from-url");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Api-Key  <apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"name\": \"Spring Campaign — Benefit-led\",\n  \"url\": \"https://cdn.example.com/generated-ad-creative.png\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift Assets_createAsset_example
import Foundation

let headers = [
  "Authorization": "Api-Key  <apiKey>",
  "Content-Type": "application/json"
]
let parameters = [
  "name": "Spring Campaign — Benefit-led",
  "url": "https://cdn.example.com/generated-ad-creative.png"
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://api.simplified.com/api/v1/assets/from-url")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
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()
```