# Register a client SDK

POST https://app.unleash-instance.example.com/api/frontend/client/register
Content-Type: application/json

This is for future use. Currently Frontend client registration is not supported. Returning 200 for clients that expect this status code. If the Frontend API is disabled 404 is returned.

Reference: https://docs.getunleash.io/api/register-frontend-client

## OpenAPI Specification

```yaml
openapi: 3.1.1
info:
  title: Register a client SDK
  version: endpoint_frontendApi.registerFrontendClient
paths:
  /api/frontend/client/register:
    post:
      operationId: register-frontend-client
      summary: Register a client SDK
      description: >-
        This is for future use. Currently Frontend client registration is not
        supported. Returning 200 for clients that expect this status code. If
        the Frontend API is disabled 404 is returned.
      tags:
        - - subpackage_frontendApi
      parameters:
        - name: Authorization
          in: header
          description: Header authentication of the form `undefined <token>`
          required: true
          schema:
            type: string
      responses:
        '200':
          description: This response has no body.
          content:
            application/json:
              schema:
                $ref: >-
                  #/components/schemas/Frontend
                  API_registerFrontendClient_Response_200
        '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: {}
        '404':
          description: The requested resource was not found.
          content: {}
      requestBody:
        description: frontendApiClientSchema
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/frontendApiClientSchema'
components:
  schemas:
    FrontendApiClientSchemaStarted:
      oneOf:
        - type: string
          format: date-time
        - type: number
          format: double
    frontendApiClientSchema:
      type: object
      properties:
        appName:
          type: string
          description: Name of the application using Unleash
        instanceId:
          type: string
          description: >-
            Instance id for this application (typically hostname, podId or
            similar)
        sdkVersion:
          type: string
          description: Optional field that describes the sdk version (name:version)
        environment:
          type: string
          description: deprecated
        interval:
          type: number
          format: double
          description: >-
            At which interval, in milliseconds, will this client be expected to
            send metrics
        started:
          $ref: '#/components/schemas/FrontendApiClientSchemaStarted'
          description: When this client started. Should be reported as ISO8601 time.
        strategies:
          type: array
          items:
            type: string
          description: List of strategies implemented by this application
      required:
        - appName
        - interval
        - started
        - strategies
    Frontend API_registerFrontendClient_Response_200:
      type: object
      properties: {}

```

## SDK Code Examples

```python
import requests

url = "https://app.unleash-instance.example.com/api/frontend/client/register"

payload = {
    "appName": "string",
    "interval": 1.1,
    "started": "2024-01-15T09:30:00Z",
    "strategies": ["string"]
}
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/frontend/client/register';
const options = {
  method: 'POST',
  headers: {Authorization: '<apiKey>', 'Content-Type': 'application/json'},
  body: '{"appName":"string","interval":1.1,"started":"2024-01-15T09:30:00Z","strategies":["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://app.unleash-instance.example.com/api/frontend/client/register"

	payload := strings.NewReader("{\n  \"appName\": \"string\",\n  \"interval\": 1.1,\n  \"started\": \"2024-01-15T09:30:00Z\",\n  \"strategies\": [\n    \"string\"\n  ]\n}")

	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/frontend/client/register")

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 = "{\n  \"appName\": \"string\",\n  \"interval\": 1.1,\n  \"started\": \"2024-01-15T09:30:00Z\",\n  \"strategies\": [\n    \"string\"\n  ]\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.post("https://app.unleash-instance.example.com/api/frontend/client/register")
  .header("Authorization", "<apiKey>")
  .header("Content-Type", "application/json")
  .body("{\n  \"appName\": \"string\",\n  \"interval\": 1.1,\n  \"started\": \"2024-01-15T09:30:00Z\",\n  \"strategies\": [\n    \"string\"\n  ]\n}")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://app.unleash-instance.example.com/api/frontend/client/register', [
  'body' => '{
  "appName": "string",
  "interval": 1.1,
  "started": "2024-01-15T09:30:00Z",
  "strategies": [
    "string"
  ]
}',
  'headers' => [
    'Authorization' => '<apiKey>',
    'Content-Type' => 'application/json',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://app.unleash-instance.example.com/api/frontend/client/register");
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "<apiKey>");
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"appName\": \"string\",\n  \"interval\": 1.1,\n  \"started\": \"2024-01-15T09:30:00Z\",\n  \"strategies\": [\n    \"string\"\n  ]\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = [
  "Authorization": "<apiKey>",
  "Content-Type": "application/json"
]
let parameters = [
  "appName": "string",
  "interval": 1.1,
  "started": "2024-01-15T09:30:00Z",
  "strategies": ["string"]
] as [String : Any]

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

let request = NSMutableURLRequest(url: NSURL(string: "https://app.unleash-instance.example.com/api/frontend/client/register")! 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()
```