curl --request POST \
  --url https://api.metronome.com/v1/contracts/create \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "customer_id": "13117714-3f05-48e5-a6e9-a66093f13b4d",
  "rate_card_id": "d7abd0cd-4ae9-4db7-8676-e986a4ebd8dc",
  "starting_at": "2020-01-01T00:00:00.000Z",
  "billing_provider_configuration": {
    "billing_provider": "stripe",
    "delivery_method": "direct_to_billing_provider"
  }
}
'

import requests

url = "https://api.metronome.com/v1/contracts/create"

payload = {
    "customer_id": "13117714-3f05-48e5-a6e9-a66093f13b4d",
    "rate_card_id": "d7abd0cd-4ae9-4db7-8676-e986a4ebd8dc",
    "starting_at": "2020-01-01T00:00:00.000Z",
    "billing_provider_configuration": {
        "billing_provider": "stripe",
        "delivery_method": "direct_to_billing_provider"
    }
}
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({
    customer_id: '13117714-3f05-48e5-a6e9-a66093f13b4d',
    rate_card_id: 'd7abd0cd-4ae9-4db7-8676-e986a4ebd8dc',
    starting_at: '2020-01-01T00:00:00.000Z',
    billing_provider_configuration: {billing_provider: 'stripe', delivery_method: 'direct_to_billing_provider'}
  })
};

fetch('https://api.metronome.com/v1/contracts/create', 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.metronome.com/v1/contracts/create",
  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([
    'customer_id' => '13117714-3f05-48e5-a6e9-a66093f13b4d',
    'rate_card_id' => 'd7abd0cd-4ae9-4db7-8676-e986a4ebd8dc',
    'starting_at' => '2020-01-01T00:00:00.000Z',
    'billing_provider_configuration' => [
        'billing_provider' => 'stripe',
        'delivery_method' => 'direct_to_billing_provider'
    ]
  ]),
  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.metronome.com/v1/contracts/create"

	payload := strings.NewReader("{\n  \"customer_id\": \"13117714-3f05-48e5-a6e9-a66093f13b4d\",\n  \"rate_card_id\": \"d7abd0cd-4ae9-4db7-8676-e986a4ebd8dc\",\n  \"starting_at\": \"2020-01-01T00:00:00.000Z\",\n  \"billing_provider_configuration\": {\n    \"billing_provider\": \"stripe\",\n    \"delivery_method\": \"direct_to_billing_provider\"\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.metronome.com/v1/contracts/create")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"customer_id\": \"13117714-3f05-48e5-a6e9-a66093f13b4d\",\n  \"rate_card_id\": \"d7abd0cd-4ae9-4db7-8676-e986a4ebd8dc\",\n  \"starting_at\": \"2020-01-01T00:00:00.000Z\",\n  \"billing_provider_configuration\": {\n    \"billing_provider\": \"stripe\",\n    \"delivery_method\": \"direct_to_billing_provider\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.metronome.com/v1/contracts/create")

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  \"customer_id\": \"13117714-3f05-48e5-a6e9-a66093f13b4d\",\n  \"rate_card_id\": \"d7abd0cd-4ae9-4db7-8676-e986a4ebd8dc\",\n  \"starting_at\": \"2020-01-01T00:00:00.000Z\",\n  \"billing_provider_configuration\": {\n    \"billing_provider\": \"stripe\",\n    \"delivery_method\": \"direct_to_billing_provider\"\n  }\n}"

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

{
  "data": {
    "id": "d7abd0cd-4ae9-4db7-8676-e986a4ebd8dc",
    "contract": {
      "id": "d7abd0cd-4ae9-4db7-8676-e986a4ebd8dc",
      "customer_id": "13117714-3f05-48e5-a6e9-a66093f13b4d",
      "starting_at": "2020-01-01T00:00:00.000Z",
      "commits": [],
      "credits": [],
      "overrides": [],
      "scheduled_charges": [],
      "transitions": [],
      "subscriptions": [],
      "recurring_commits": [],
      "recurring_credits": [],
      "created_at": "2020-01-01T00:00:00.000Z",
      "created_by": "system",
      "usage_statement_schedule": {
        "frequency": "MONTHLY",
        "billing_anchor_date": "2020-01-01T00:00:00.000Z"
      },
      "usage_filter": []
    }
  }
}

{
  "message": "<string>"
}

{
  "message": "<string>"
}