curl --request POST \
  --url https://dev.api.nestapi.com/v1/nesting/1D \
  --header 'Accept: <accept>' \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "Request": {
    "SourceLength": 123,
    "SourceWidth": 123,
    "CutGap": 123,
    "SourceQuantity": 123,
    "ComputationTime": 123,
    "Lengths": [
      {
        "Quantity": 123,
        "Length": 123
      }
    ]
  }
}
'

import requests

url = "https://dev.api.nestapi.com/v1/nesting/1D"

payload = { "Request": {
        "SourceLength": 123,
        "SourceWidth": 123,
        "CutGap": 123,
        "SourceQuantity": 123,
        "ComputationTime": 123,
        "Lengths": [
            {
                "Quantity": 123,
                "Length": 123
            }
        ]
    } }
headers = {
    "Accept": "<accept>",
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    Accept: '<accept>',
    Authorization: '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    Request: {
      SourceLength: 123,
      SourceWidth: 123,
      CutGap: 123,
      SourceQuantity: 123,
      ComputationTime: 123,
      Lengths: [{Quantity: 123, Length: 123}]
    }
  })
};

fetch('https://dev.api.nestapi.com/v1/nesting/1D', 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://dev.api.nestapi.com/v1/nesting/1D",
  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([
    'Request' => [
        'SourceLength' => 123,
        'SourceWidth' => 123,
        'CutGap' => 123,
        'SourceQuantity' => 123,
        'ComputationTime' => 123,
        'Lengths' => [
                [
                                'Quantity' => 123,
                                'Length' => 123
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Accept: <accept>",
    "Authorization: <api-key>",
    "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://dev.api.nestapi.com/v1/nesting/1D"

	payload := strings.NewReader("{\n  \"Request\": {\n    \"SourceLength\": 123,\n    \"SourceWidth\": 123,\n    \"CutGap\": 123,\n    \"SourceQuantity\": 123,\n    \"ComputationTime\": 123,\n    \"Lengths\": [\n      {\n        \"Quantity\": 123,\n        \"Length\": 123\n      }\n    ]\n  }\n}")

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

	req.Header.Add("Accept", "<accept>")
	req.Header.Add("Authorization", "<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://dev.api.nestapi.com/v1/nesting/1D")
  .header("Accept", "<accept>")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"Request\": {\n    \"SourceLength\": 123,\n    \"SourceWidth\": 123,\n    \"CutGap\": 123,\n    \"SourceQuantity\": 123,\n    \"ComputationTime\": 123,\n    \"Lengths\": [\n      {\n        \"Quantity\": 123,\n        \"Length\": 123\n      }\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://dev.api.nestapi.com/v1/nesting/1D")

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

request = Net::HTTP::Post.new(url)
request["Accept"] = '<accept>'
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"Request\": {\n    \"SourceLength\": 123,\n    \"SourceWidth\": 123,\n    \"CutGap\": 123,\n    \"SourceQuantity\": 123,\n    \"ComputationTime\": 123,\n    \"Lengths\": [\n      {\n        \"Quantity\": 123,\n        \"Length\": 123\n      }\n    ]\n  }\n}"

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

{
  "ResponseStatus": "<string>",
  "StatusReport": "<string>",
  "Result": {
    "NumberOfUniqueNests": 123,
    "Nests": [
      {
        "Multiplicity": 123,
        "PlacedLengths": [
          {
            "Quantity": 123,
            "Length": 123,
            "PlacedX": 123
          }
        ]
      }
    ]
  }
}