> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.dropboxapi.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.dropboxapi.com/_mcp/server. # App POST https://api.dropboxapi.com/2/check/app Content-Type: application/json This endpoint performs App Authentication, validating the supplied app key and secret, and returns the supplied string, to allow you to test your code and connection to the Dropbox API. It has no other effect. If you receive an HTTP 200 response with the supplied query, it indicates at least part of the Dropbox API infrastructure is working and that the app key and secret valid. **Endpoint format:** [RPC](https://docs.dropboxapi.com/dropbox-api/docs/technical-reference/request-response-formats#rpc-endpoints) **Authentication:** [App](https://docs.dropboxapi.com/dropbox-api/docs/auth-types#app-authentication) Reference: https://docs.dropboxapi.com/dropbox-api/api-reference/user-endpoints/check/app ## Authentication - `Authorization` header (bearer token, required) — App-level OAuth 2.0 token (no user context). Use `Authorization: Bearer `. Obtain by calling the token endpoint with `grant_type=client_credentials`. Only available on endpoints that declare app auth support. ## Request ### Body (application/json) This endpoint expects an object. - `query` (string, optional) — The string that you'd like to be echoed back to you. ## Response ### 200 Successful response - `result` (string, optional) — If everything worked correctly, this would be the same as query. ## Errors ### 401 Unauthorized Error Bad or expired token - `error` (object or object or object or object or object or object or object or object, required) — Errors occurred during authentication. - auth_apiv2.AuthError.invalid_access_token - `.tag` (enum, required) - Allowed values: `invalid_access_token` - auth_apiv2.AuthError.invalid_select_user - `.tag` (enum, required) - Allowed values: `invalid_select_user` - auth_apiv2.AuthError.invalid_select_admin - `.tag` (enum, required) - Allowed values: `invalid_select_admin` - auth_apiv2.AuthError.user_suspended - `.tag` (enum, required) - Allowed values: `user_suspended` - auth_apiv2.AuthError.expired_access_token - `.tag` (enum, required) - Allowed values: `expired_access_token` - auth_apiv2.AuthError.missing_scope - `.tag` (enum, required) - Allowed values: `missing_scope` - `required_scope` (string, required) — The required scope to access the route. - auth_apiv2.AuthError.route_access_denied - `.tag` (enum, required) - Allowed values: `route_access_denied` - Other - `.tag` (string, optional) - `error_summary` (string, required) — A human-readable summary of the error. ### 403 Forbidden Error The user or team account doesn't have access to the endpoint or feature - `error` (object or object or object or object or object, required) — Error occurred because the account doesn't have permission to access the resource. - auth_apiv2.AccessError.invalid_account_type - `.tag` (enum, required) - Allowed values: `invalid_account_type` - `invalid_account_type` (object or object or object, required) - auth_apiv2.InvalidAccountTypeError.endpoint - `.tag` (enum, required) - Allowed values: `endpoint` - auth_apiv2.InvalidAccountTypeError.feature - `.tag` (enum, required) - Allowed values: `feature` - Other - `.tag` (string, optional) - auth_apiv2.AccessError.paper_access_denied - `.tag` (enum, required) - Allowed values: `paper_access_denied` - `paper_access_denied` (object or object or object, required) - auth_apiv2.PaperAccessError.paper_disabled - `.tag` (enum, required) - Allowed values: `paper_disabled` - auth_apiv2.PaperAccessError.not_paper_user - `.tag` (enum, required) - Allowed values: `not_paper_user` - Other - `.tag` (string, optional) - auth_apiv2.AccessError.team_access_denied - `.tag` (enum, required) - Allowed values: `team_access_denied` - auth_apiv2.AccessError.no_permission - `.tag` (enum, required) - Allowed values: `no_permission` - `no_permission` (object or object, required) - auth_apiv2.NoPermissionError.unauthorized_account_id_usage - `.tag` (enum, required) - Allowed values: `unauthorized_account_id_usage` - `unauthorized_account_ids` (list of string, required) — The account IDs that the caller does not have permission to use. - Other - `.tag` (string, optional) - Other - `.tag` (string, optional) - `error_summary` (string, required) — A human-readable summary of the error. ### 409 Conflict Error Endpoint-specific error - `error` (object, required) — EchoError contains the error returned from the Dropbox servers. - `.tag` (enum, required) - Allowed values: `user_requested`, `other` - `error_summary` (string, required) — A human-readable summary of the error. - `user_message` (object, optional) - `locale` (string, optional) - `text` (string, optional) ### 429 Too Many Requests Error The app is making too many requests for the given user or team and is being rate limited. The app should wait for the number of seconds specified in the "Retry-After" response header before trying again. - `error` (object, required) — Error occurred because the app is being rate limited. - `reason` (object or object or object, required) — The reason why the app is being rate limited. - auth_apiv2.RateLimitReason.too_many_requests - `.tag` (enum, required) - Allowed values: `too_many_requests` - auth_apiv2.RateLimitReason.too_many_write_operations - `.tag` (enum, required) - Allowed values: `too_many_write_operations` - Other - `.tag` (string, optional) - `retry_after` (uint64, optional, default: 1) — The number of seconds that the app should wait before making another request. - `error_summary` (string, required) — A human-readable summary of the error. ### 500 Internal Server Error Internal server error. An error occurred on the Dropbox servers. Check https://status.dropbox.com/ for announcements about Dropbox service issues. - `any` ## Examples **Request** ```json { "query": "foo" } ``` **Response** ```json { "result": "foo" } ``` **SDK Code** ```python import requests url = "https://api.dropboxapi.com/2/check/app" payload = { "query": "foo" } headers = { "Authorization": "Bearer ", "Content-Type": "application/json" } response = requests.post(url, json=payload, headers=headers) print(response.json()) ``` ```javascript const url = 'https://api.dropboxapi.com/2/check/app'; const options = { method: 'POST', headers: {Authorization: 'Bearer ', 'Content-Type': 'application/json'}, body: '{"query":"foo"}' }; 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://api.dropboxapi.com/2/check/app" payload := strings.NewReader("{\n \"query\": \"foo\"\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 require 'uri' require 'net/http' url = URI("https://api.dropboxapi.com/2/check/app") 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 \"query\": \"foo\"\n}" response = http.request(request) puts response.read_body ``` ```java import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.post("https://api.dropboxapi.com/2/check/app") .header("Authorization", "Bearer ") .header("Content-Type", "application/json") .body("{\n \"query\": \"foo\"\n}") .asString(); ``` ```php request('POST', 'https://api.dropboxapi.com/2/check/app', [ 'body' => '{ "query": "foo" }', 'headers' => [ 'Authorization' => 'Bearer ', 'Content-Type' => 'application/json', ], ]); echo $response->getBody(); ``` ```csharp using RestSharp; var client = new RestClient("https://api.dropboxapi.com/2/check/app"); var request = new RestRequest(Method.POST); request.AddHeader("Authorization", "Bearer "); request.AddHeader("Content-Type", "application/json"); request.AddParameter("application/json", "{\n \"query\": \"foo\"\n}", ParameterType.RequestBody); IRestResponse response = client.Execute(request); ``` ```swift import Foundation let headers = [ "Authorization": "Bearer ", "Content-Type": "application/json" ] let parameters = ["query": "foo"] as [String : Any] let postData = JSONSerialization.data(withJSONObject: parameters, options: []) let request = NSMutableURLRequest(url: NSURL(string: "https://api.dropboxapi.com/2/check/app")! 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() ```