curl --request PATCH \
  --url https://api.langdock.com/knowledge/{folderId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form file='@example-file' \
  --form 'url=<string>' \
  --form 'attachmentId=<string>'

import requests

url = "https://api.langdock.com/knowledge/{folderId}"

files = { "file": ("example-file", open("example-file", "rb")) }
payload = {
    "url": "<string>",
    "attachmentId": "<string>"
}
headers = {"Authorization": "Bearer <token>"}

response = requests.patch(url, data=payload, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('file', '<string>');
form.append('url', '<string>');
form.append('attachmentId', '<string>');

const options = {method: 'PATCH', headers: {Authorization: 'Bearer <token>'}};

options.body = form;

fetch('https://api.langdock.com/knowledge/{folderId}', 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.langdock.com/knowledge/{folderId}",
  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<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"url\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"attachmentId\"\r\n\r\n<string>\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: multipart/form-data"
  ],
]);

$response = curl_exec($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.langdock.com/knowledge/{folderId}"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"url\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"attachmentId\"\r\n\r\n<string>\r\n-----011000010111000001101001--")

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

	req.Header.Add("Authorization", "Bearer <token>")

	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.langdock.com/knowledge/{folderId}")
  .header("Authorization", "Bearer <token>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"url\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"attachmentId\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.langdock.com/knowledge/{folderId}")

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

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"url\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"attachmentId\"\r\n\r\n<string>\r\n-----011000010111000001101001--"

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

{
  "message": "The file \"updated-report.pdf\" is declared as a PDF but its content does not start with the expected PDF header.",
  "code": "BAD_REQUEST"
}

{
  "message": "The provided API key is invalid."
}

{
  "message": "Knowledge folder not shared with this API key. Please share the folder with the API key in the Langdock App to upload or update files.",
  "code": "FORBIDDEN"
}

{
  "message": "Attachment with ID '550e8400-e29b-41d4-a716-446655440000' not found in this knowledge folder.",
  "code": "NOT_FOUND"
}

{
  "message": "Upload request timed out. Please try again with a smaller file or check your connection.",
  "code": "REQUEST_TIMEOUT"
}

{
  "message": "File size exceeds the maximum allowed size of 256MB. Please upload a smaller file.",
  "code": "PAYLOAD_TOO_LARGE"
}

{
  "message": "You have exceeded the maximum number of requests per minute (50)",
  "code": "TOO_MANY_REQUESTS"
}

{
  "message": "Internal server error"
}

{
  "message": "Storage capacity exceeded. Please contact your administrator.",
  "code": "SERVICE_UNAVAILABLE"
}