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# Check whether a membership card number is valid

GET https://api.entria.app/api/membership/card

Looks up a membership by its physical card number and reports whether the card is currently valid for the given membership code. Use this to power a member sign-in box in a storefront before pricing a basket with member pricing or perks.

Reference: https://docs.navipartner.com/entria-api/entria-api-reference/membership/get-get-membership-card-by-number

## Request

### Query parameters

- `cardNumber` (string, required) — The membership card number printed on or encoded on the card.
- `membershipCode` (string, required) — The membership type code the card is expected to belong to.

### Headers

- `x-entria` (string, required) — Identifies which store this request is for. Required on every store-scoped route. It is not authentication and not a secret — it grants no privileges and is safe to send from a browser. You receive the value once your Entria backend has been created and configured. Missing header returns 400; an unknown store returns 404.

## Response

### 200

Whether the membership card is valid for the given membership code

- `valid` (boolean, required)

## Errors

### 400 Bad Request Error

Invalid request, or Business Central rejected the lookup.

- `error` (string, required)
- `code` (string, optional)
- `details` (list of ErrorResponseDetailsItems, optional) — Per-field validation failures; present when code is VALIDATION_ERROR.
- `success` (boolean, optional, deprecated) — Deprecated. Use code === VALIDATION_ERROR.
- `errors` (list of any, optional, deprecated) — Deprecated. Raw zod issues; use details instead.

### 429 Too Many Requests Error

Too many requests — rate limit exceeded

- `error` (string, required)
- `code` (string, optional)
- `details` (list of ErrorResponseDetailsItems, optional) — Per-field validation failures; present when code is VALIDATION_ERROR.
- `success` (boolean, optional, deprecated) — Deprecated. Use code === VALIDATION_ERROR.
- `errors` (list of any, optional, deprecated) — Deprecated. Raw zod issues; use details instead.

### 500 Internal Server Error

The card could not be read — an upstream failure on our side.

- `error` (string, required)
- `code` (string, optional)
- `details` (list of ErrorResponseDetailsItems, optional) — Per-field validation failures; present when code is VALIDATION_ERROR.
- `success` (boolean, optional, deprecated) — Deprecated. Use code === VALIDATION_ERROR.
- `errors` (list of any, optional, deprecated) — Deprecated. Raw zod issues; use details instead.

## Types

### ErrorResponseDetailsItems

- `path` (string, required)
- `message` (string, required)

## Examples

**Response**

```json
{
  "valid": true
}
```

**SDK Code**

```python
import requests

url = "https://api.entria.app/api/membership/card"

querystring = {"cardNumber":"cardNumber","membershipCode":"membershipCode"}

headers = {"x-entria": "x-entria"}

response = requests.get(url, headers=headers, params=querystring)

print(response.json())
```

```javascript
const url = 'https://api.entria.app/api/membership/card?cardNumber=cardNumber&membershipCode=membershipCode';
const options = {method: 'GET', headers: {'x-entria': 'x-entria'}};

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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.entria.app/api/membership/card?cardNumber=cardNumber&membershipCode=membershipCode"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("x-entria", "x-entria")

	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.entria.app/api/membership/card?cardNumber=cardNumber&membershipCode=membershipCode")

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

request = Net::HTTP::Get.new(url)
request["x-entria"] = 'x-entria'

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.get("https://api.entria.app/api/membership/card?cardNumber=cardNumber&membershipCode=membershipCode")
  .header("x-entria", "x-entria")
  .asString();
```

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

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.entria.app/api/membership/card?cardNumber=cardNumber&membershipCode=membershipCode', [
  'headers' => [
    'x-entria' => 'x-entria',
  ],
]);

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

```csharp
using RestSharp;

var client = new RestClient("https://api.entria.app/api/membership/card?cardNumber=cardNumber&membershipCode=membershipCode");
var request = new RestRequest(Method.GET);
request.AddHeader("x-entria", "x-entria");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["x-entria": "x-entria"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.entria.app/api/membership/card?cardNumber=cardNumber&membershipCode=membershipCode")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

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()
```