curl --request PATCH \
  --url https://api.dock.us/{version}/deals/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "customFields": [
    {
      "id": "<string>",
      "value": "Single line of text"
    }
  ]
}
'

import requests

url = "https://api.dock.us/{version}/deals/{id}"

payload = { "customFields": [
        {
            "id": "<string>",
            "value": "Single line of text"
        }
    ] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({customFields: [{id: '<string>', value: 'Single line of text'}]})
};

fetch('https://api.dock.us/{version}/deals/{id}', 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.dock.us/{version}/deals/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'customFields' => [
        [
                'id' => '<string>',
                'value' => 'Single line of text'
        ]
    ]
  ]),
  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.dock.us/{version}/deals/{id}"

	payload := strings.NewReader("{\n  \"customFields\": [\n    {\n      \"id\": \"<string>\",\n      \"value\": \"Single line of text\"\n    }\n  ]\n}")

	req, _ := http.NewRequest("PATCH", 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.patch("https://api.dock.us/{version}/deals/{id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"customFields\": [\n    {\n      \"id\": \"<string>\",\n      \"value\": \"Single line of text\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.dock.us/{version}/deals/{id}")

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

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"customFields\": [\n    {\n      \"id\": \"<string>\",\n      \"value\": \"Single line of text\"\n    }\n  ]\n}"

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

{
  "data": {
    "deal": {
      "id": "RiHO4e0Ju3DS",
      "updatedAt": "2021-01-01T00:00:00.000Z",
      "createdAt": "2021-01-01T00:00:00.000Z",
      "hubspotDealId": "1234567890",
      "object": "deal",
      "url": "https://api.dock.us/v1/deals/RiHO4e0Ju3DS",
      "createdDate": "2024-01-01T00:00:00Z",
      "closeDate": "2024-01-01T00:00:00Z",
      "name": "Deal 1",
      "amount": "100000",
      "type": "New Business",
      "stage": "Proposal Sent"
    }
  }
}

{
  "error": {
    "code": "BAD_REQUEST",
    "message": "The request could not be understood or was missing required parameters"
  }
}

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Access denied. You are not authorized to access this resource"
  }
}

{
  "error": {
    "code": "FORBIDDEN",
    "message": "Access to this resource is restricted"
  }
}

{
  "error": {
    "code": "NOT_FOUND",
    "message": "The requested resource could not be found"
  }
}

{
  "error": {
    "code": "RATE_LIMIT_EXCEEDED",
    "message": "Rate limit exceeded. Please try again later"
  }
}

{
  "error": {
    "code": "INTERNAL_SERVER_ERROR",
    "message": "The server has encountered a situation it does not know how to handle"
  }
}