curl --request POST \
  --url https://catalystapi.superdashhq.com/api/v1/sms/startSMSThread/{assistantId} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <x-api-key>' \
  --data '
{
  "workspaceId": "<string>",
  "toNumber": "<string>",
  "fromNumber": "<string>",
  "message": "<string>",
  "attributes": {
    "customField1": "<string>",
    "customField2": "<string>",
    "customField3": "<string>",
    "customField4": "<string>",
    "customField5": "<string>",
    "customField6": "<string>",
    "customField7": "<string>",
    "customField8": "<string>"
  }
}
'

import requests

url = "https://catalystapi.superdashhq.com/api/v1/sms/startSMSThread/{assistantId}"

payload = {
    "workspaceId": "<string>",
    "toNumber": "<string>",
    "fromNumber": "<string>",
    "message": "<string>",
    "attributes": {
        "customField1": "<string>",
        "customField2": "<string>",
        "customField3": "<string>",
        "customField4": "<string>",
        "customField5": "<string>",
        "customField6": "<string>",
        "customField7": "<string>",
        "customField8": "<string>"
    }
}
headers = {
    "x-api-key": "<x-api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<x-api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    workspaceId: '<string>',
    toNumber: '<string>',
    fromNumber: '<string>',
    message: '<string>',
    attributes: {
      customField1: '<string>',
      customField2: '<string>',
      customField3: '<string>',
      customField4: '<string>',
      customField5: '<string>',
      customField6: '<string>',
      customField7: '<string>',
      customField8: '<string>'
    }
  })
};

fetch('https://catalystapi.superdashhq.com/api/v1/sms/startSMSThread/{assistantId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://catalystapi.superdashhq.com/api/v1/sms/startSMSThread/{assistantId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'workspaceId' => '<string>',
    'toNumber' => '<string>',
    'fromNumber' => '<string>',
    'message' => '<string>',
    'attributes' => [
        'customField1' => '<string>',
        'customField2' => '<string>',
        'customField3' => '<string>',
        'customField4' => '<string>',
        'customField5' => '<string>',
        'customField6' => '<string>',
        'customField7' => '<string>',
        'customField8' => '<string>'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <x-api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://catalystapi.superdashhq.com/api/v1/sms/startSMSThread/{assistantId}"

	payload := strings.NewReader("{\n  \"workspaceId\": \"<string>\",\n  \"toNumber\": \"<string>\",\n  \"fromNumber\": \"<string>\",\n  \"message\": \"<string>\",\n  \"attributes\": {\n    \"customField1\": \"<string>\",\n    \"customField2\": \"<string>\",\n    \"customField3\": \"<string>\",\n    \"customField4\": \"<string>\",\n    \"customField5\": \"<string>\",\n    \"customField6\": \"<string>\",\n    \"customField7\": \"<string>\",\n    \"customField8\": \"<string>\"\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<x-api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://catalystapi.superdashhq.com/api/v1/sms/startSMSThread/{assistantId}")
  .header("x-api-key", "<x-api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"workspaceId\": \"<string>\",\n  \"toNumber\": \"<string>\",\n  \"fromNumber\": \"<string>\",\n  \"message\": \"<string>\",\n  \"attributes\": {\n    \"customField1\": \"<string>\",\n    \"customField2\": \"<string>\",\n    \"customField3\": \"<string>\",\n    \"customField4\": \"<string>\",\n    \"customField5\": \"<string>\",\n    \"customField6\": \"<string>\",\n    \"customField7\": \"<string>\",\n    \"customField8\": \"<string>\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://catalystapi.superdashhq.com/api/v1/sms/startSMSThread/{assistantId}")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<x-api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"workspaceId\": \"<string>\",\n  \"toNumber\": \"<string>\",\n  \"fromNumber\": \"<string>\",\n  \"message\": \"<string>\",\n  \"attributes\": {\n    \"customField1\": \"<string>\",\n    \"customField2\": \"<string>\",\n    \"customField3\": \"<string>\",\n    \"customField4\": \"<string>\",\n    \"customField5\": \"<string>\",\n    \"customField6\": \"<string>\",\n    \"customField7\": \"<string>\",\n    \"customField8\": \"<string>\"\n  }\n}"

response = http.request(request)
puts response.read_body