curl --request POST \
  --url https://api.print.app/v2/imposition-rules \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "Calendar: month pairs on A3",
  "unit": "mm",
  "sections": [
    {
      "pages": "",
      "group": 2,
      "direction": "vertical",
      "sheet": {
        "width": 297,
        "height": 420
      }
    }
  ]
}
'

import requests

url = "https://api.print.app/v2/imposition-rules"

payload = {
    "title": "Calendar: month pairs on A3",
    "unit": "mm",
    "sections": [
        {
            "pages": "",
            "group": 2,
            "direction": "vertical",
            "sheet": {
                "width": 297,
                "height": 420
            }
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    title: 'Calendar: month pairs on A3',
    unit: 'mm',
    sections: [{pages: '', group: 2, direction: 'vertical', sheet: {width: 297, height: 420}}]
  })
};

fetch('https://api.print.app/v2/imposition-rules', 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://api.print.app/v2/imposition-rules",
  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' => 'Calendar: month pairs on A3',
    'unit' => 'mm',
    'sections' => [
        [
                'pages' => '',
                'group' => 2,
                'direction' => 'vertical',
                'sheet' => [
                                'width' => 297,
                                'height' => 420
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://api.print.app/v2/imposition-rules"

	payload := strings.NewReader("{\n  \"title\": \"Calendar: month pairs on A3\",\n  \"unit\": \"mm\",\n  \"sections\": [\n    {\n      \"pages\": \"\",\n      \"group\": 2,\n      \"direction\": \"vertical\",\n      \"sheet\": {\n        \"width\": 297,\n        \"height\": 420\n      }\n    }\n  ]\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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://api.print.app/v2/imposition-rules")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"title\": \"Calendar: month pairs on A3\",\n  \"unit\": \"mm\",\n  \"sections\": [\n    {\n      \"pages\": \"\",\n      \"group\": 2,\n      \"direction\": \"vertical\",\n      \"sheet\": {\n        \"width\": 297,\n        \"height\": 420\n      }\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.print.app/v2/imposition-rules")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"title\": \"Calendar: month pairs on A3\",\n  \"unit\": \"mm\",\n  \"sections\": [\n    {\n      \"pages\": \"\",\n      \"group\": 2,\n      \"direction\": \"vertical\",\n      \"sheet\": {\n        \"width\": 297,\n        \"height\": 420\n      }\n    }\n  ]\n}"

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

{
  "object": "imposition_rule",
  "id": "_imposition_1",
  "title": "Book cover: back, spine and front as one spread",
  "description": "Pages 1, 2 and 3 are the front cover, the spine and the back cover. The PDF joins them into one spread with the back cover on the left. Later pages print as they are.",
  "builtIn": true,
  "unit": "mm",
  "sections": [
    {
      "pages": "1-3",
      "group": 3,
      "order": [
        3,
        2,
        1
      ],
      "direction": "horizontal",
      "sheet": null,
      "anchor": "center",
      "offset": {
        "x": 0,
        "y": 0
      },
      "marks": {
        "crop": null,
        "fold": null
      }
    }
  ],
  "created": null,
  "modified": null
}

{
  "error": true,
  "code": "invalid_request",
  "message": "width is required.",
  "param": "width",
  "requestId": "FZn-uhymjoEEJow="
}

{
  "error": true,
  "code": "unauthorized",
  "message": "Missing or invalid secret key. Send it as \"Authorization: Bearer sk_…\".",
  "requestId": "FZn-uhymjoEEJow="
}

{
  "error": true,
  "code": "account_suspended",
  "message": "This account is suspended. Settle the outstanding invoice in the Print.App dashboard.",
  "requestId": "FZn-uhymjoEEJow="
}

{
  "error": true,
  "code": "unsupported_media_type",
  "message": "Send the request body as JSON, with \"Content-Type: application/json\".",
  "requestId": "FZn-uhymjoEEJow="
}

{
  "message": "Too Many Requests"
}

{
  "error": true,
  "code": "internal_error",
  "message": "Something went wrong on our side. Retry the request; if it keeps failing, contact support with the requestId.",
  "requestId": "FZn-uhymjoEEJow="
}