curl -X PATCH 'https://verification.didit.me/v3/session/11111111-2222-3333-4444-555555555555/add-images/' \
  -H 'x-api-key: YOUR_API_KEY' \
  -F 'file=@./back-of-id.jpg' \
  -F 'model_type=kyc'

import os

import requests

session_id = '11111111-2222-3333-4444-555555555555'
with open('back-of-id.jpg', 'rb') as fh:
    resp = requests.patch(
        f'https://verification.didit.me/v3/session/{session_id}/add-images/',
        headers={'x-api-key': os.environ['DIDIT_API_KEY']},
        files={'file': ('back-of-id.jpg', fh, 'image/jpeg')},
        data={'model_type': 'kyc'},
        timeout=10,
    )
resp.raise_for_status()
print(resp.json()['extra_files'])

import { readFile } from 'node:fs/promises';

const sessionId = '11111111-2222-3333-4444-555555555555';
const form = new FormData();
form.append('file', new Blob([await readFile('./back-of-id.jpg')], { type: 'image/jpeg' }), 'back-of-id.jpg');
form.append('model_type', 'kyc');

const resp = await fetch(`https://verification.didit.me/v3/session/${sessionId}/add-images/`, {
  method: 'PATCH',
  headers: { 'x-api-key': process.env.DIDIT_API_KEY },
  body: form,
});
if (!resp.ok) throw new Error(`Upload failed: ${resp.status}`);
const { extra_files: extraFiles } = await resp.json();
console.log(extraFiles);

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://verification.didit.me/v3/session/{sessionId}/add-images/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n(binary)\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_type\"\r\n\r\nkyc\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Content-Type: multipart/form-data; boundary=---011000010111000001101001",
    "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://verification.didit.me/v3/session/{sessionId}/add-images/"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n(binary)\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_type\"\r\n\r\nkyc\r\n-----011000010111000001101001--")

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

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "multipart/form-data; boundary=---011000010111000001101001")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://verification.didit.me/v3/session/{sessionId}/add-images/")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "multipart/form-data; boundary=---011000010111000001101001")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n(binary)\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_type\"\r\n\r\nkyc\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://verification.didit.me/v3/session/{sessionId}/add-images/")

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

request = Net::HTTP::Patch.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'multipart/form-data; boundary=---011000010111000001101001'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n(binary)\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"model_type\"\r\n\r\nkyc\r\n-----011000010111000001101001--"

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