curl --request PUT \
  --url https://production-api.joinrings.com/v1/opportunities/{opportunity_uuid} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "custom_fields": [
    {
      "uuid": "<string>",
      "float_value": 123,
      "string_value": "<string>"
    }
  ],
  "details": "<string>",
  "intro_date": "<string>",
  "intro_person_uuid": "<string>",
  "name": "<string>",
  "next_step": "<string>",
  "owner_user_uuid": "<string>",
  "parent_uuid": "<string>",
  "probability": 123,
  "source_date": "<string>",
  "stage_uuid": "<string>",
  "type_uuid": "<string>",
  "value": 123
}
'

import requests

url = "https://production-api.joinrings.com/v1/opportunities/{opportunity_uuid}"

payload = {
    "custom_fields": [
        {
            "uuid": "<string>",
            "float_value": 123,
            "string_value": "<string>"
        }
    ],
    "details": "<string>",
    "intro_date": "<string>",
    "intro_person_uuid": "<string>",
    "name": "<string>",
    "next_step": "<string>",
    "owner_user_uuid": "<string>",
    "parent_uuid": "<string>",
    "probability": 123,
    "source_date": "<string>",
    "stage_uuid": "<string>",
    "type_uuid": "<string>",
    "value": 123
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    custom_fields: [{uuid: '<string>', float_value: 123, string_value: '<string>'}],
    details: '<string>',
    intro_date: '<string>',
    intro_person_uuid: '<string>',
    name: '<string>',
    next_step: '<string>',
    owner_user_uuid: '<string>',
    parent_uuid: '<string>',
    probability: 123,
    source_date: '<string>',
    stage_uuid: '<string>',
    type_uuid: '<string>',
    value: 123
  })
};

fetch('https://production-api.joinrings.com/v1/opportunities/{opportunity_uuid}', 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://production-api.joinrings.com/v1/opportunities/{opportunity_uuid}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'custom_fields' => [
        [
                'uuid' => '<string>',
                'float_value' => 123,
                'string_value' => '<string>'
        ]
    ],
    'details' => '<string>',
    'intro_date' => '<string>',
    'intro_person_uuid' => '<string>',
    'name' => '<string>',
    'next_step' => '<string>',
    'owner_user_uuid' => '<string>',
    'parent_uuid' => '<string>',
    'probability' => 123,
    'source_date' => '<string>',
    'stage_uuid' => '<string>',
    'type_uuid' => '<string>',
    'value' => 123
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($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://production-api.joinrings.com/v1/opportunities/{opportunity_uuid}"

	payload := strings.NewReader("{\n  \"custom_fields\": [\n    {\n      \"uuid\": \"<string>\",\n      \"float_value\": 123,\n      \"string_value\": \"<string>\"\n    }\n  ],\n  \"details\": \"<string>\",\n  \"intro_date\": \"<string>\",\n  \"intro_person_uuid\": \"<string>\",\n  \"name\": \"<string>\",\n  \"next_step\": \"<string>\",\n  \"owner_user_uuid\": \"<string>\",\n  \"parent_uuid\": \"<string>\",\n  \"probability\": 123,\n  \"source_date\": \"<string>\",\n  \"stage_uuid\": \"<string>\",\n  \"type_uuid\": \"<string>\",\n  \"value\": 123\n}")

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

	req.Header.Add("x-api-key", "<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.put("https://production-api.joinrings.com/v1/opportunities/{opportunity_uuid}")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"custom_fields\": [\n    {\n      \"uuid\": \"<string>\",\n      \"float_value\": 123,\n      \"string_value\": \"<string>\"\n    }\n  ],\n  \"details\": \"<string>\",\n  \"intro_date\": \"<string>\",\n  \"intro_person_uuid\": \"<string>\",\n  \"name\": \"<string>\",\n  \"next_step\": \"<string>\",\n  \"owner_user_uuid\": \"<string>\",\n  \"parent_uuid\": \"<string>\",\n  \"probability\": 123,\n  \"source_date\": \"<string>\",\n  \"stage_uuid\": \"<string>\",\n  \"type_uuid\": \"<string>\",\n  \"value\": 123\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://production-api.joinrings.com/v1/opportunities/{opportunity_uuid}")

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

request = Net::HTTP::Put.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"custom_fields\": [\n    {\n      \"uuid\": \"<string>\",\n      \"float_value\": 123,\n      \"string_value\": \"<string>\"\n    }\n  ],\n  \"details\": \"<string>\",\n  \"intro_date\": \"<string>\",\n  \"intro_person_uuid\": \"<string>\",\n  \"name\": \"<string>\",\n  \"next_step\": \"<string>\",\n  \"owner_user_uuid\": \"<string>\",\n  \"parent_uuid\": \"<string>\",\n  \"probability\": 123,\n  \"source_date\": \"<string>\",\n  \"stage_uuid\": \"<string>\",\n  \"type_uuid\": \"<string>\",\n  \"value\": 123\n}"

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

{
  "uuid": "<string>",
  "created_at": 123,
  "updated_at": 123
}