curl "https://api.phrase.com/v2/accounts/:account_id/custom_metadata/properties" \
  -u USERNAME_OR_ACCESS_TOKEN \
  -X POST \
  -d '{"name":"Fruit","data_type":"multi_select","description":"A healthy snack for all ages","project_ids":["1","2","3"],"value_options":["apple","banana","coconut"]}' \
  -H 'Content-Type: application/json'

phrase custom_metadata_properties create \
--account_id <account_id> \
--data '{"name":"Fruit","data_type":"multi_select","description":"A healthy snack for all ages","project_ids":["1","2","3"],"value_options":["apple","banana","coconut"]}' \
--access_token <token>

import requests

url = "https://api.phrase.com/v2/accounts/{account_id}/custom_metadata/properties"

payload = {
    "name": "Fruit",
    "data_type": "string",
    "project_ids": ["abcd1234cdef1234abcd1234cdef1234", "abcd1234cdef1234abcd1234cdef4321"],
    "description": "A healthy snack for all ages",
    "value_options": ["Apple", "Banana", "Coconut"]
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    name: 'Fruit',
    data_type: 'string',
    project_ids: ['abcd1234cdef1234abcd1234cdef1234', 'abcd1234cdef1234abcd1234cdef4321'],
    description: 'A healthy snack for all ages',
    value_options: ['Apple', 'Banana', 'Coconut']
  })
};

fetch('https://api.phrase.com/v2/accounts/{account_id}/custom_metadata/properties', 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.phrase.com/v2/accounts/{account_id}/custom_metadata/properties",
  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([
    'name' => 'Fruit',
    'data_type' => 'string',
    'project_ids' => [
        'abcd1234cdef1234abcd1234cdef1234',
        'abcd1234cdef1234abcd1234cdef4321'
    ],
    'description' => 'A healthy snack for all ages',
    'value_options' => [
        'Apple',
        'Banana',
        'Coconut'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "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://api.phrase.com/v2/accounts/{account_id}/custom_metadata/properties"

	payload := strings.NewReader("{\n  \"name\": \"Fruit\",\n  \"data_type\": \"string\",\n  \"project_ids\": [\n    \"abcd1234cdef1234abcd1234cdef1234\",\n    \"abcd1234cdef1234abcd1234cdef4321\"\n  ],\n  \"description\": \"A healthy snack for all ages\",\n  \"value_options\": [\n    \"Apple\",\n    \"Banana\",\n    \"Coconut\"\n  ]\n}")

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

	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://api.phrase.com/v2/accounts/{account_id}/custom_metadata/properties")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"Fruit\",\n  \"data_type\": \"string\",\n  \"project_ids\": [\n    \"abcd1234cdef1234abcd1234cdef1234\",\n    \"abcd1234cdef1234abcd1234cdef4321\"\n  ],\n  \"description\": \"A healthy snack for all ages\",\n  \"value_options\": [\n    \"Apple\",\n    \"Banana\",\n    \"Coconut\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.phrase.com/v2/accounts/{account_id}/custom_metadata/properties")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"name\": \"Fruit\",\n  \"data_type\": \"string\",\n  \"project_ids\": [\n    \"abcd1234cdef1234abcd1234cdef1234\",\n    \"abcd1234cdef1234abcd1234cdef4321\"\n  ],\n  \"description\": \"A healthy snack for all ages\",\n  \"value_options\": [\n    \"Apple\",\n    \"Banana\",\n    \"Coconut\"\n  ]\n}"

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

{
  "id": "abcd1234cdef1234abcd1234cdef1234",
  "name": "Nuts",
  "description": "A healthy snack for all ages",
  "data_type": "multi_select",
  "user": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "username": "joe.doe",
    "name": "Joe Doe"
  },
  "created_at": "2015-01-28T09:52:53Z",
  "updated_at": "2015-01-28T09:52:53Z",
  "projects": [
    {
      "id": "abcd1234cdef1234abcd1234cdef1234",
      "name": "My Android Project",
      "main_format": "xml",
      "created_at": "2015-01-28T09:52:53Z",
      "updated_at": "2015-01-28T09:52:53Z"
    }
  ],
  "value_options": [
    "apple",
    "banana",
    "coconut"
  ]
}

{
  "message": "Validation Failed",
  "errors": [
    {
      "resource": "Resource",
      "field": "name",
      "message": "can't be blank"
    }
  ]
}