curl 'https://api.gumloop.com/api/v1/brain/sources/PFqdAMir8PA2Xc6qcszSN9/files' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
  -F 'files=@handbook.pdf' \
  -F 'files=@release-process.md'

from gumloop import Gumloop

client = Gumloop(access_token="YOUR_ACCESS_TOKEN")

upload = client.brain.upload_files(
    "PFqdAMir8PA2Xc6qcszSN9",
    {"handbook.pdf": open("handbook.pdf", "rb").read()},
)
print([f.status for f in upload.files], upload.rejected)

const form = new FormData();
form.append('files', '<string>');
form.append('files.items', '{
  "fileName": "example-file"
}');

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

options.body = form;

fetch('https://api.gumloop.com/api/v1/brain/sources/{source_id}/files', 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.gumloop.com/api/v1/brain/sources/{source_id}/files",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"files\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"files.items\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: multipart/form-data; boundary=---011000010111000001101001"
  ],
]);

$response = curl_exec($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.gumloop.com/api/v1/brain/sources/{source_id}/files"

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

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.post("https://api.gumloop.com/api/v1/brain/sources/{source_id}/files")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "multipart/form-data; boundary=---011000010111000001101001")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"files\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"files.items\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.gumloop.com/api/v1/brain/sources/{source_id}/files")

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"] = 'multipart/form-data; boundary=---011000010111000001101001'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"files\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"files.items\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--"

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

{
  "files": [
    {
      "id": "f2bf0108-1650-47cd-a20d-15268a3cc5cc",
      "file_name": "handbook.pdf",
      "mime_type": "application/pdf",
      "size_bytes": 48213,
      "sha256": "9bae5b3a3eb1af86840cd141aa644f73d55ec445e056b74fb2ecffc17f15ac9d",
      "status": "uploaded",
      "error": null,
      "document_id": null,
      "created_at": "2026-09-25T23:52:13.997124+00:00",
      "indexed_at": null
    }
  ],
  "rejected": [
    {
      "file_name": "notes.exe",
      "error": "unsupported file type \".exe\""
    }
  ],
  "sync_run_id": "4umrkunyhiBgUhLLBT2toA"
}