> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://api.docs.modulards.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://api.docs.modulards.com/_mcp/server. # Create client POST https://api.modulards.com/api/public/v1/clients Content-Type: application/json Creates a Client. Answers **201** with the resource and a `Location` header. **Body** (JSON): - `name` (string, required, max 255) - `last_name` (string, optional, max 255) - `company` (string, optional, max 255) Requires a full-access token (read-only tokens answer 403). Validation failures answer 422 with a JSON:API `errors` document. Reference: https://api.docs.modulards.com/modular-ds-public-api/clients/create-client ## Authentication - `Authorization` header (bearer token, required) — Personal access token created in the Modular DS dashboard; read-only tokens can only call GET endpoints. ## Request ### Body (application/json) This endpoint expects an object. - `company` (string, optional) - `last_name` (string, optional) - `name` (string, optional) ## Response ### 201 201 - Client created - `data` (ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaData, optional) - `jsonapi` (ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaJsonapi, optional) ## Errors ### 403 Forbidden Error 403 Forbidden - Read-only token - `errors` (list of ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaErrorsItems, optional) - `jsonapi` (ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaJsonapi, optional) ### 422 Unprocessable Entity Error 422 Unprocessable Entity - Missing name - `errors` (list of ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaErrorsItems, optional) - `jsonapi` (ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaJsonapi, optional) ## Types ### ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaData - `attributes` (ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaDataAttributes, optional) - `id` (string, optional) - `links` (ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaDataLinks, optional) - `type` (string, optional) ### ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaJsonapi - `version` (string, optional) ### ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaErrorsItems - `detail` (string, optional) - `source` (ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaErrorsItemsSource, optional) - `status` (string, optional) - `title` (string, optional) ### ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaDataAttributes - `company` (string, optional) - `created_at` (string, optional) - `last_name` (string, optional) - `name` (string, optional) - `updated_at` (string, optional) ### ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaDataLinks - `self` (string, optional) ### ApiPublicV1ClientsPostResponsesContentApplicationJsonSchemaErrorsItemsSource - `pointer` (string, optional) ## Examples ### 201 - Client created **Request** ```json undefined ``` **Response** ```json { "data": { "attributes": { "company": "Acme", "created_at": "2026-09-24T09:20:00.000000Z", "last_name": "Walker", "name": "Alice", "updated_at": "2026-09-24T09:20:00.000000Z" }, "id": "101", "links": { "self": "https://api.modulards.com/api/public/v1/clients/101" }, "type": "clients" }, "jsonapi": { "version": "1.1" } } ``` **SDK Code** ```python 201 - Client created import requests url = "https://api.modulards.com/api/public/v1/clients" headers = {"Authorization": "Bearer "} response = requests.post(url, headers=headers) print(response.json()) ``` ```javascript 201 - Client created const url = 'https://api.modulards.com/api/public/v1/clients'; const options = {method: 'POST', headers: {Authorization: 'Bearer '}}; try { const response = await fetch(url, options); const data = await response.json(); console.log(data); } catch (error) { console.error(error); } ``` ```go 201 - Client created package main import ( "fmt" "net/http" "io" ) func main() { url := "https://api.modulards.com/api/public/v1/clients" req, _ := http.NewRequest("POST", url, nil) req.Header.Add("Authorization", "Bearer ") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := io.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body)) } ``` ```ruby 201 - Client created require 'uri' require 'net/http' url = URI("https://api.modulards.com/api/public/v1/clients") http = Net::HTTP.new(url.host, url.port) http.use_ssl = true request = Net::HTTP::Post.new(url) request["Authorization"] = 'Bearer ' response = http.request(request) puts response.read_body ``` ```java 201 - Client created import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.post("https://api.modulards.com/api/public/v1/clients") .header("Authorization", "Bearer ") .asString(); ``` ```php 201 - Client created request('POST', 'https://api.modulards.com/api/public/v1/clients', [ 'headers' => [ 'Authorization' => 'Bearer ', ], ]); echo $response->getBody(); ``` ```csharp 201 - Client created using RestSharp; var client = new RestClient("https://api.modulards.com/api/public/v1/clients"); var request = new RestRequest(Method.POST); request.AddHeader("Authorization", "Bearer "); IRestResponse response = client.Execute(request); ``` ```swift 201 - Client created import Foundation let headers = ["Authorization": "Bearer "] let request = NSMutableURLRequest(url: NSURL(string: "https://api.modulards.com/api/public/v1/clients")! as URL, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 10.0) request.httpMethod = "POST" 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() ``` ### Create client **Request** ```json { "company": "Acme", "last_name": "Walker", "name": "Alice" } ``` **Response** ```json { "data": { "attributes": { "company": "Acme", "created_at": "2026-09-24T09:20:00.000000Z", "last_name": "Walker", "name": "Alice", "updated_at": "2026-09-24T09:20:00.000000Z" }, "id": "101", "links": { "self": "https://api.modulards.com/api/public/v1/clients/101" }, "type": "clients" }, "jsonapi": { "version": "1.1" } } ``` **SDK Code** ```python Create client import requests url = "https://api.modulards.com/api/public/v1/clients" payload = { "company": "Acme", "last_name": "Walker", "name": "Alice" } headers = { "Authorization": "Bearer ", "Content-Type": "application/json" } response = requests.post(url, json=payload, headers=headers) print(response.json()) ``` ```javascript Create client const url = 'https://api.modulards.com/api/public/v1/clients'; const options = { method: 'POST', headers: {Authorization: 'Bearer ', 'Content-Type': 'application/json'}, body: '{"company":"Acme","last_name":"Walker","name":"Alice"}' }; try { const response = await fetch(url, options); const data = await response.json(); console.log(data); } catch (error) { console.error(error); } ``` ```go Create client package main import ( "fmt" "strings" "net/http" "io" ) func main() { url := "https://api.modulards.com/api/public/v1/clients" payload := strings.NewReader("{\n \"company\": \"Acme\",\n \"last_name\": \"Walker\",\n \"name\": \"Alice\"\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 Create client require 'uri' require 'net/http' url = URI("https://api.modulards.com/api/public/v1/clients") 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 \"company\": \"Acme\",\n \"last_name\": \"Walker\",\n \"name\": \"Alice\"\n}" response = http.request(request) puts response.read_body ``` ```java Create client import com.mashape.unirest.http.HttpResponse; import com.mashape.unirest.http.Unirest; HttpResponse response = Unirest.post("https://api.modulards.com/api/public/v1/clients") .header("Authorization", "Bearer ") .header("Content-Type", "application/json") .body("{\n \"company\": \"Acme\",\n \"last_name\": \"Walker\",\n \"name\": \"Alice\"\n}") .asString(); ``` ```php Create client request('POST', 'https://api.modulards.com/api/public/v1/clients', [ 'body' => '{ "company": "Acme", "last_name": "Walker", "name": "Alice" }', 'headers' => [ 'Authorization' => 'Bearer ', 'Content-Type' => 'application/json', ], ]); echo $response->getBody(); ``` ```csharp Create client using RestSharp; var client = new RestClient("https://api.modulards.com/api/public/v1/clients"); var request = new RestRequest(Method.POST); request.AddHeader("Authorization", "Bearer "); request.AddHeader("Content-Type", "application/json"); request.AddParameter("application/json", "{\n \"company\": \"Acme\",\n \"last_name\": \"Walker\",\n \"name\": \"Alice\"\n}", ParameterType.RequestBody); IRestResponse response = client.Execute(request); ``` ```swift Create client import Foundation let headers = [ "Authorization": "Bearer ", "Content-Type": "application/json" ] let parameters = [ "company": "Acme", "last_name": "Walker", "name": "Alice" ] as [String : Any] let postData = JSONSerialization.data(withJSONObject: parameters, options: []) let request = NSMutableURLRequest(url: NSURL(string: "https://api.modulards.com/api/public/v1/clients")! 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() ```