curl --request POST \
  --url https://optareach.com/api/v1/platforms/{platform}/prospect-lists \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "EU SaaS Founders",
  "description": "Prioritized founder list for Q2 outbound.",
  "filters": {
    "region": [
      "Europe"
    ],
    "companyHeadcountMax": 200
  }
}
'

import requests

url = "https://optareach.com/api/v1/platforms/{platform}/prospect-lists"

payload = {
    "title": "EU SaaS Founders",
    "description": "Prioritized founder list for Q2 outbound.",
    "filters": {
        "region": ["Europe"],
        "companyHeadcountMax": 200
    }
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    title: 'EU SaaS Founders',
    description: 'Prioritized founder list for Q2 outbound.',
    filters: {region: ['Europe'], companyHeadcountMax: 200}
  })
};

fetch('https://optareach.com/api/v1/platforms/{platform}/prospect-lists', 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://optareach.com/api/v1/platforms/{platform}/prospect-lists",
  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([
    'title' => 'EU SaaS Founders',
    'description' => 'Prioritized founder list for Q2 outbound.',
    'filters' => [
        'region' => [
                'Europe'
        ],
        'companyHeadcountMax' => 200
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://optareach.com/api/v1/platforms/{platform}/prospect-lists"

	payload := strings.NewReader("{\n  \"title\": \"EU SaaS Founders\",\n  \"description\": \"Prioritized founder list for Q2 outbound.\",\n  \"filters\": {\n    \"region\": [\n      \"Europe\"\n    ],\n    \"companyHeadcountMax\": 200\n  }\n}")

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

	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://optareach.com/api/v1/platforms/{platform}/prospect-lists")
  .header("Content-Type", "application/json")
  .body("{\n  \"title\": \"EU SaaS Founders\",\n  \"description\": \"Prioritized founder list for Q2 outbound.\",\n  \"filters\": {\n    \"region\": [\n      \"Europe\"\n    ],\n    \"companyHeadcountMax\": 200\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://optareach.com/api/v1/platforms/{platform}/prospect-lists")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"title\": \"EU SaaS Founders\",\n  \"description\": \"Prioritized founder list for Q2 outbound.\",\n  \"filters\": {\n    \"region\": [\n      \"Europe\"\n    ],\n    \"companyHeadcountMax\": 200\n  }\n}"

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

{
  "data": {
    "id": "list_founders_eu",
    "platform": "linkedin",
    "name": "EU SaaS Founders",
    "description": "High-intent founders collected from outbound workflows.",
    "leadCount": 128,
    "createdAt": "2026-03-19T12:00:00.000Z"
  }
}