> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.lettbestilt.no/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.lettbestilt.no/_mcp/server. # Sign up for the newsletter POST https://www.lettbestilt.no/api/v1/newsletter/signup Content-Type: application/json Adds the customer to the restaurant's newsletter and returns the welcome coupon. Signing up again with the same email is safe: it returns the welcome coupon again and keeps the address subscribed. The newsletter popup must be enabled in the restaurant's dashboard and linked to an active coupon. Otherwise the response is `404 POPUP_NOT_AVAILABLE` and nothing is stored. Check `restaurant.newsletterPopup` in `GET /restaurant` before you show a signup form; it also holds the popup's texts. Rate limits: 5 requests per 60 seconds per IP, and 200 per hour per restaurant. Reference: https://docs.lettbestilt.no/api-reference/coupons-and-newsletter/sign-up-for-newsletter ## Authentication - `Authorization` header (bearer token, required) — Either this or a trusted browser origin. The restaurant's API key, sent as `Authorization: Bearer lbs_…`. Use it from your server only, never in browser code. Keys are issued per restaurant by LettBestilt. - `Origin` header (required) — Either this or an API key. No key is needed when the request's `Origin` header is trusted for this restaurant: `https://{slug}.lettbestilt.no`, a verified domain of the restaurant, or a partner origin LettBestilt has bound to the restaurant. Browsers set `Origin` themselves; it is not something you configure. Not accepted by `GET /site-gate`, which requires an API key. ## Request ### Query parameters - `slug` (string, required) — The restaurant's slug. ### Body (application/json) This endpoint expects an object. - `email` (string, required) - `name` (string, optional) ## Response ### 200 The customer is subscribed. Show the welcome coupon. - `couponCode` (string, optional) — The welcome code. Show it to the customer. - `discountType` (enum, optional) — The kind of discount the code gives. - Allowed values: `PERCENT`, `FIXED`, `FREE_DELIVERY` - `discountValue` (integer, optional) — `PERCENT`: percent. `FIXED`: øre. - `successMessage` (string, optional) — The restaurant's thank-you text. Replace `{{code}}` and `{{discount}}` before you show it. ## Errors ### 400 Bad Request Error `MISSING_SLUG` or `INVALID_JSON`. - `error` (ErrorBody, required) ### 401 Unauthorized Error `UNAUTHORIZED`: missing or invalid API key, and the request does not come from a trusted browser origin. - `error` (ErrorBody, required) ### 404 Not Found Error `RESTAURANT_NOT_FOUND`, or `POPUP_NOT_AVAILABLE` when the popup is turned off or has no active coupon. - `error` (ErrorBody, required) ### 422 Unprocessable Entity Error `VALIDATION_FAILED`: the body failed validation. - `error` (ErrorBody, required) ### 429 Too Many Requests Error `RATE_LIMITED`: too many signups from this IP or for this restaurant. - `error` (ErrorBody, required) ## Types ### ErrorBody - `code` (enum, required) — A machine-readable error code. - Allowed values: `MISSING_SLUG`, `MISSING_TOKEN`, `INVALID_JSON`, `INVALID_SUCCESS_URL`, `INVALID_CANCEL_URL`, `VALIDATION_FAILED`, `RESTAURANT_NOT_FOUND`, `ORDER_NOT_FOUND`, `RATE_LIMITED`, `BAD_REQUEST`, `UNAUTHORIZED`, `FORBIDDEN`, `POPUP_NOT_AVAILABLE`, `PRICE_CHANGED`, `PAYMENT_INCOMPLETE`, `PAYMENT_PENDING`, `PAYMENT_PROVIDER_INVALID`, `FULFILLMENT_NOT_ALLOWED`, `IDEMPOTENCY_CONFLICT`, `DINE_IN_DISABLED`, `PARTY_TOO_LARGE`, `TOO_EARLY`, `INTERNAL_ERROR` - `message` (string, required) — A human-readable explanation. Often in Norwegian, and for business rules usually suitable to show the customer. - `details` (any, optional) — Extra data for some codes, for example `issues` for `VALIDATION_FAILED` or the totals for `PRICE_CHANGED`. ## Examples **Request** ```json { "email": "kari@example.com", "name": "Kari" } ``` **Response** ```json { "couponCode": "VELKOMMEN", "discountType": "PERCENT", "discountValue": 10, "successMessage": "Takk! Bruk koden {{code}} for {{discount}} rabatt." } ``` **SDK Code** ```python Coupons and newsletter_signUpForNewsletter_example import requests url = "https://www.lettbestilt.no/api/v1/newsletter/signup" querystring = {"slug":"slug"} payload = { "email": "kari@example.com", "name": "Kari" } headers = { "Authorization": "Bearer ", "Content-Type": "application/json" } response = requests.post(url, json=payload, headers=headers, params=querystring) print(response.json()) ``` ```javascript Coupons and newsletter_signUpForNewsletter_example const url = 'https://www.lettbestilt.no/api/v1/newsletter/signup?slug=slug'; const options = { method: 'POST', headers: {Authorization: 'Bearer ', 'Content-Type': 'application/json'}, body: '{"email":"kari@example.com","name":"Kari"}' }; try { const response = await fetch(url, options); const data = await response.json(); console.log(data); } catch (error) { console.error(error); } ``` ```go Coupons and newsletter_signUpForNewsletter_example package main import ( "fmt" "strings" "net/http" "io" ) func main() { url := "https://www.lettbestilt.no/api/v1/newsletter/signup?slug=slug" payload := strings.NewReader("{\n \"email\": \"kari@example.com\",\n \"name\": \"Kari\"\n}") req, _ := http.NewRequest("POST", url, payload) req.Header.Add("Authorization", "Bearer ") 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 Coupons and newsletter_signUpForNewsletter_example require 'uri' require 'net/http' url = URI("https://www.lettbestilt.no/api/v1/newsletter/signup?slug=slug") http = Net::HTTP.new(url.host, url.port) http.use_ssl = true request = Net::HTTP::Post.new(url) request["Authorization"] = 'Bearer ' request["Content-Type"] = 'application/json' request.body = "{\n \"email\": \"kari@example.com\",\n \"name\": \"Kari\"\n}" response = http.request(request) puts response.read_body ``` ```java Coupons and newsletter_signUpForNewsletter_example import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.post("https://www.lettbestilt.no/api/v1/newsletter/signup?slug=slug") .header("Authorization", "Bearer ") .header("Content-Type", "application/json") .body("{\n \"email\": \"kari@example.com\",\n \"name\": \"Kari\"\n}") .asString(); ``` ```php Coupons and newsletter_signUpForNewsletter_example request('POST', 'https://www.lettbestilt.no/api/v1/newsletter/signup?slug=slug', [ 'body' => '{ "email": "kari@example.com", "name": "Kari" }', 'headers' => [ 'Authorization' => 'Bearer ', 'Content-Type' => 'application/json', ], ]); echo $response->getBody(); ``` ```csharp Coupons and newsletter_signUpForNewsletter_example using RestSharp; var client = new RestClient("https://www.lettbestilt.no/api/v1/newsletter/signup?slug=slug"); var request = new RestRequest(Method.POST); request.AddHeader("Authorization", "Bearer "); request.AddHeader("Content-Type", "application/json"); request.AddParameter("application/json", "{\n \"email\": \"kari@example.com\",\n \"name\": \"Kari\"\n}", ParameterType.RequestBody); IRestResponse response = client.Execute(request); ``` ```swift Coupons and newsletter_signUpForNewsletter_example import Foundation let headers = [ "Authorization": "Bearer ", "Content-Type": "application/json" ] let parameters = [ "email": "kari@example.com", "name": "Kari" ] as [String : Any] let postData = JSONSerialization.data(withJSONObject: parameters, options: []) let request = NSMutableURLRequest(url: NSURL(string: "https://www.lettbestilt.no/api/v1/newsletter/signup?slug=slug")! 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() ```