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POST
/
api
/
upload
/
image
Upload an image file
curl --request POST \
  --url https://cloud.comfy.org/api/upload/image \
  --header 'Content-Type: multipart/form-data' \
  --header 'X-API-Key: <api-key>' \
  --form image='@example-file' \
  --form 'overwrite=<string>' \
  --form 'subfolder=<string>' \
  --form 'type=<string>'
import requests

url = "https://cloud.comfy.org/api/upload/image"

files = { "image": ("example-file", open("example-file", "rb")) }
payload = {
    "overwrite": "<string>",
    "subfolder": "<string>",
    "type": "<string>"
}
headers = {"X-API-Key": "<api-key>"}

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

print(response.text)
const form = new FormData();
form.append('image', '<string>');
form.append('overwrite', '<string>');
form.append('subfolder', '<string>');
form.append('type', '<string>');

const options = {method: 'POST', headers: {'X-API-Key': '<api-key>'}};

options.body = form;

fetch('https://cloud.comfy.org/api/upload/image', 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://cloud.comfy.org/api/upload/image",
  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=\"image\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"overwrite\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"subfolder\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"type\"\r\n\r\n<string>\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Content-Type: multipart/form-data",
    "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://cloud.comfy.org/api/upload/image"

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

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

	req.Header.Add("X-API-Key", "<api-key>")

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

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

	fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.post("https://cloud.comfy.org/api/upload/image")
  .header("X-API-Key", "<api-key>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"image\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"overwrite\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"subfolder\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"type\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://cloud.comfy.org/api/upload/image")

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

request = Net::HTTP::Post.new(url)
request["X-API-Key"] = '<api-key>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"image\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"overwrite\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"subfolder\"\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"type\"\r\n\r\n<string>\r\n-----011000010111000001101001--"

response = http.request(request)
puts response.read_body
{
  "name": "<string>",
  "subfolder": "<string>",
  "type": "<string>"
}
{
  "code": "<string>",
  "message": "<string>"
}
{
  "code": "<string>",
  "message": "<string>"
}
{
  "code": "<string>",
  "message": "<string>"
}

Authorizations

X-API-Key
string
header
required

API key authentication. Generate an API key from your account settings at https://platform.comfy.org/profile/api-keys. Pass the key in the X-API-Key header.

Body

multipart/form-data
image
file
required

The image file to upload

overwrite
string

Whether to overwrite existing file (true/false). Note: Accepted for ComfyUI API compatibility but effectively ignored in cloud. Cloud uses content-addressed storage (hash-based deduplication), so identical content always maps to the same hash. Re-uploading the same content is a no-op.

subfolder
string

Optional subfolder path. Note: Accepted for ComfyUI API compatibility but ignored for storage. Cloud stores assets by hash only. The subfolder is returned in the response for client-side organization but is not used for server-side storage paths.

type
string

Upload type (defaults to "output"). Note: Accepted for ComfyUI API compatibility. Cloud stores all uploads as assets with tags rather than directory-based organization.

Response

Image uploaded successfully

name
string

Filename of the uploaded image

subfolder
string

Subfolder path where image was saved

type
string

Type of upload (e.g., "output")