curl --request POST \
  --url https://b.anny.co/api/v1/timeslot-resource-allocations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '
{
  "data": {
    "type": "timeslot-resource-allocations",
    "attributes": {
      "visible_to_customer": true,
      "order_index": 1,
      "status": "pending",
      "capacity_multiplier": 1,
      "imputed_costs": null
    },
    "relationships": {
      "resource": {
        "data": {
          "id": "15",
          "type": "resources"
        }
      },
      "timeslot": {
        "data": {
          "id": "12",
          "type": "timeslots"
        }
      }
    }
  },
  "meta": {}
}
'

import requests

url = "https://b.anny.co/api/v1/timeslot-resource-allocations"

payload = {
    "data": {
        "type": "timeslot-resource-allocations",
        "attributes": {
            "visible_to_customer": True,
            "order_index": 1,
            "status": "pending",
            "capacity_multiplier": 1,
            "imputed_costs": None
        },
        "relationships": {
            "resource": { "data": {
                    "id": "15",
                    "type": "resources"
                } },
            "timeslot": { "data": {
                    "id": "12",
                    "type": "timeslots"
                } }
        }
    },
    "meta": {}
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/vnd.api+json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/vnd.api+json'},
  body: JSON.stringify({
    data: {
      type: 'timeslot-resource-allocations',
      attributes: {
        visible_to_customer: true,
        order_index: 1,
        status: 'pending',
        capacity_multiplier: 1,
        imputed_costs: null
      },
      relationships: {
        resource: {data: {id: '15', type: 'resources'}},
        timeslot: {data: {id: '12', type: 'timeslots'}}
      }
    },
    meta: {}
  })
};

fetch('https://b.anny.co/api/v1/timeslot-resource-allocations', 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://b.anny.co/api/v1/timeslot-resource-allocations",
  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([
    'data' => [
        'type' => 'timeslot-resource-allocations',
        'attributes' => [
                'visible_to_customer' => true,
                'order_index' => 1,
                'status' => 'pending',
                'capacity_multiplier' => 1,
                'imputed_costs' => null
        ],
        'relationships' => [
                'resource' => [
                                'data' => [
                                                                'id' => '15',
                                                                'type' => 'resources'
                                ]
                ],
                'timeslot' => [
                                'data' => [
                                                                'id' => '12',
                                                                'type' => 'timeslots'
                                ]
                ]
        ]
    ],
    'meta' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/vnd.api+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://b.anny.co/api/v1/timeslot-resource-allocations"

	payload := strings.NewReader("{\n  \"data\": {\n    \"type\": \"timeslot-resource-allocations\",\n    \"attributes\": {\n      \"visible_to_customer\": true,\n      \"order_index\": 1,\n      \"status\": \"pending\",\n      \"capacity_multiplier\": 1,\n      \"imputed_costs\": null\n    },\n    \"relationships\": {\n      \"resource\": {\n        \"data\": {\n          \"id\": \"15\",\n          \"type\": \"resources\"\n        }\n      },\n      \"timeslot\": {\n        \"data\": {\n          \"id\": \"12\",\n          \"type\": \"timeslots\"\n        }\n      }\n    }\n  },\n  \"meta\": {}\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/vnd.api+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://b.anny.co/api/v1/timeslot-resource-allocations")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/vnd.api+json")
  .body("{\n  \"data\": {\n    \"type\": \"timeslot-resource-allocations\",\n    \"attributes\": {\n      \"visible_to_customer\": true,\n      \"order_index\": 1,\n      \"status\": \"pending\",\n      \"capacity_multiplier\": 1,\n      \"imputed_costs\": null\n    },\n    \"relationships\": {\n      \"resource\": {\n        \"data\": {\n          \"id\": \"15\",\n          \"type\": \"resources\"\n        }\n      },\n      \"timeslot\": {\n        \"data\": {\n          \"id\": \"12\",\n          \"type\": \"timeslots\"\n        }\n      }\n    }\n  },\n  \"meta\": {}\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://b.anny.co/api/v1/timeslot-resource-allocations")

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/vnd.api+json'
request.body = "{\n  \"data\": {\n    \"type\": \"timeslot-resource-allocations\",\n    \"attributes\": {\n      \"visible_to_customer\": true,\n      \"order_index\": 1,\n      \"status\": \"pending\",\n      \"capacity_multiplier\": 1,\n      \"imputed_costs\": null\n    },\n    \"relationships\": {\n      \"resource\": {\n        \"data\": {\n          \"id\": \"15\",\n          \"type\": \"resources\"\n        }\n      },\n      \"timeslot\": {\n        \"data\": {\n          \"id\": \"12\",\n          \"type\": \"timeslots\"\n        }\n      }\n    }\n  },\n  \"meta\": {}\n}"

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

{
  "data": {
    "id": "<string>",
    "type": "timeslot-resource-allocations",
    "attributes": {
      "capacity_multiplier": 123,
      "order_index": 123,
      "imputed_costs": 123,
      "is_externally_blocked": true,
      "is_required": true,
      "provisioned_at": "2023-11-07T05:31:56Z",
      "provisioned_by_booking_id": 123,
      "visible_to_customer": true,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    },
    "links": {
      "self": "<string>"
    },
    "relationships": {
      "resource": {
        "data": {
          "type": "<string>",
          "id": "<string>"
        },
        "links": {
          "self": "<string>"
        }
      },
      "timeslot": {
        "data": {
          "type": "<string>",
          "id": "<string>"
        },
        "links": {
          "self": "<string>"
        }
      }
    }
  }
}