# Create an application to connect reported metrics

POST https://app.unleash-instance.example.com/api/admin/metrics/applications/{appName}
Content-Type: application/json

Is used to report usage as well which sdk the application uses

Reference: https://docs.getunleash.io/api/create-application

## OpenAPI Specification

```yaml
openapi: 3.1.1
info:
  title: Create an application to connect reported metrics
  version: endpoint_metrics.createApplication
paths:
  /api/admin/metrics/applications/{appName}:
    post:
      operationId: create-application
      summary: Create an application to connect reported metrics
      description: Is used to report usage as well which sdk the application uses
      tags:
        - - subpackage_metrics
      parameters:
        - name: appName
          in: path
          required: true
          schema:
            type: string
        - name: Authorization
          in: header
          description: Header authentication of the form `undefined <token>`
          required: true
          schema:
            type: string
      responses:
        '202':
          description: This response has no body.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Metrics_createApplication_Response_202'
        '400':
          description: The request data does not match what we expect.
          content: {}
        '401':
          description: >-
            Authorization information is missing or invalid. Provide a valid API
            token as the `authorization` header, e.g.
            `authorization:*.*.my-admin-token`.
          content: {}
        '403':
          description: >-
            The provided user credentials are valid, but the user does not have
            the necessary permissions to perform this operation
          content: {}
      requestBody:
        description: createApplicationSchema
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/createApplicationSchema'
components:
  schemas:
    createApplicationSchema:
      type: object
      properties:
        strategies:
          type: array
          items:
            type: string
          description: >-
            Which
            [strategies](https://docs.getunleash.io/concepts#activation-strategies)
            the application has loaded. Useful when trying to figure out if your
            [custom
            strategy](https://docs.getunleash.io/concepts/activation-strategies#custom-strategies)
            has been loaded in the SDK
        url:
          type: string
          description: >-
            A link to reference the application reporting the metrics. Could for
            instance be a GitHub link to the repository of the application
        color:
          type: string
          description: >-
            Css color to be used to color the application's entry in the
            application list
        icon:
          type: string
          description: >-
            An URL to an icon file to be used for the applications's entry in
            the application list
    Metrics_createApplication_Response_202:
      type: object
      properties: {}

```

## SDK Code Examples

```python
import requests

url = "https://app.unleash-instance.example.com/api/admin/metrics/applications/appName"

payload = {}
headers = {
    "Authorization": "<apiKey>",
    "Content-Type": "application/json"
}

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

print(response.json())
```

```javascript
const url = 'https://app.unleash-instance.example.com/api/admin/metrics/applications/appName';
const options = {
  method: 'POST',
  headers: {Authorization: '<apiKey>', 'Content-Type': 'application/json'},
  body: '{}'
};

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://app.unleash-instance.example.com/api/admin/metrics/applications/appName"

	payload := strings.NewReader("{}")

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

	req.Header.Add("Authorization", "<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
require 'uri'
require 'net/http'

url = URI("https://app.unleash-instance.example.com/api/admin/metrics/applications/appName")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<apiKey>'
request["Content-Type"] = 'application/json'
request.body = "{}"

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.post("https://app.unleash-instance.example.com/api/admin/metrics/applications/appName")
  .header("Authorization", "<apiKey>")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://app.unleash-instance.example.com/api/admin/metrics/applications/appName', [
  'body' => '{}',
  'headers' => [
    'Authorization' => '<apiKey>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://app.unleash-instance.example.com/api/admin/metrics/applications/appName");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "<apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

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

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

let request = NSMutableURLRequest(url: NSURL(string: "https://app.unleash-instance.example.com/api/admin/metrics/applications/appName")! 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()
```