curl --request POST \
--url https://core.cyberun.cloud/api/v1/models/presign \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"file_name": "sdxl_base_1.0.safetensors",
"file_size": 6800000000,
"model_type": "checkpoints",
"model_path": "models/checkpoints/sdxl_base_1.0.safetensors"
}
'import requests
url = "https://core.cyberun.cloud/api/v1/models/presign"
payload = {
"file_name": "sdxl_base_1.0.safetensors",
"file_size": 6800000000,
"model_type": "checkpoints",
"model_path": "models/checkpoints/sdxl_base_1.0.safetensors"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
file_name: 'sdxl_base_1.0.safetensors',
file_size: 6800000000,
model_type: 'checkpoints',
model_path: 'models/checkpoints/sdxl_base_1.0.safetensors'
})
};
fetch('https://core.cyberun.cloud/api/v1/models/presign', 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://core.cyberun.cloud/api/v1/models/presign",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'file_name' => 'sdxl_base_1.0.safetensors',
'file_size' => 6800000000,
'model_type' => 'checkpoints',
'model_path' => 'models/checkpoints/sdxl_base_1.0.safetensors'
]),
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://core.cyberun.cloud/api/v1/models/presign"
payload := strings.NewReader("{\n \"file_name\": \"sdxl_base_1.0.safetensors\",\n \"file_size\": 6800000000,\n \"model_type\": \"checkpoints\",\n \"model_path\": \"models/checkpoints/sdxl_base_1.0.safetensors\"\n}")
req, _ := http.NewRequest("POST", 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.post("https://core.cyberun.cloud/api/v1/models/presign")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"file_name\": \"sdxl_base_1.0.safetensors\",\n \"file_size\": 6800000000,\n \"model_type\": \"checkpoints\",\n \"model_path\": \"models/checkpoints/sdxl_base_1.0.safetensors\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://core.cyberun.cloud/api/v1/models/presign")
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"] = 'application/json'
request.body = "{\n \"file_name\": \"sdxl_base_1.0.safetensors\",\n \"file_size\": 6800000000,\n \"model_type\": \"checkpoints\",\n \"model_path\": \"models/checkpoints/sdxl_base_1.0.safetensors\"\n}"
response = http.request(request)
puts response.read_body{
"upload_url": "https://s3.example.com/bucket/key?X-Amz-Signature=...",
"storage_key": "models/019abc12-4567/019def34-5678",
"upload_headers": {}
}{
"error_message": "resource not found"
}{
"error_message": "resource not found"
}{
"error_message": "resource not found"
}Request a presigned upload URL for a model file
Returns a presigned S3 PUT URL for uploading a model file. After uploading, call POST /models to register the model metadata.
Accepts JWT or dk-. The returned URL is a single-part PUT — fine for
files up to the server’s configured request cap (default 500 MB; S3’s
hard ceiling on a single PUT is 5 GB). Larger model files require the
JWT-only multipart flow under /uploads/multipart/*.
curl --request POST \
--url https://core.cyberun.cloud/api/v1/models/presign \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"file_name": "sdxl_base_1.0.safetensors",
"file_size": 6800000000,
"model_type": "checkpoints",
"model_path": "models/checkpoints/sdxl_base_1.0.safetensors"
}
'import requests
url = "https://core.cyberun.cloud/api/v1/models/presign"
payload = {
"file_name": "sdxl_base_1.0.safetensors",
"file_size": 6800000000,
"model_type": "checkpoints",
"model_path": "models/checkpoints/sdxl_base_1.0.safetensors"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
file_name: 'sdxl_base_1.0.safetensors',
file_size: 6800000000,
model_type: 'checkpoints',
model_path: 'models/checkpoints/sdxl_base_1.0.safetensors'
})
};
fetch('https://core.cyberun.cloud/api/v1/models/presign', 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://core.cyberun.cloud/api/v1/models/presign",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'file_name' => 'sdxl_base_1.0.safetensors',
'file_size' => 6800000000,
'model_type' => 'checkpoints',
'model_path' => 'models/checkpoints/sdxl_base_1.0.safetensors'
]),
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://core.cyberun.cloud/api/v1/models/presign"
payload := strings.NewReader("{\n \"file_name\": \"sdxl_base_1.0.safetensors\",\n \"file_size\": 6800000000,\n \"model_type\": \"checkpoints\",\n \"model_path\": \"models/checkpoints/sdxl_base_1.0.safetensors\"\n}")
req, _ := http.NewRequest("POST", 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.post("https://core.cyberun.cloud/api/v1/models/presign")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"file_name\": \"sdxl_base_1.0.safetensors\",\n \"file_size\": 6800000000,\n \"model_type\": \"checkpoints\",\n \"model_path\": \"models/checkpoints/sdxl_base_1.0.safetensors\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://core.cyberun.cloud/api/v1/models/presign")
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"] = 'application/json'
request.body = "{\n \"file_name\": \"sdxl_base_1.0.safetensors\",\n \"file_size\": 6800000000,\n \"model_type\": \"checkpoints\",\n \"model_path\": \"models/checkpoints/sdxl_base_1.0.safetensors\"\n}"
response = http.request(request)
puts response.read_body{
"upload_url": "https://s3.example.com/bucket/key?X-Amz-Signature=...",
"storage_key": "models/019abc12-4567/019def34-5678",
"upload_headers": {}
}{
"error_message": "resource not found"
}{
"error_message": "resource not found"
}{
"error_message": "resource not found"
}Authorizations
User session JWT (Bearer ). Must be paired with the X-Team-ID
request header on team-scoped endpoints so the server knows which
team's resources to operate on.
Headers
UUID of the team to scope the request to. Used by dual-auth endpoints (runtime + scoped management):
- JWT callers MUST send it — a user may belong to multiple teams and the runtime cannot otherwise know which one to operate on. Missing header → 400.
- Credential callers (
sk-,dk-) can omit it because the team is derived from the credential row itself. Any value sent is ignored.
"019abc12-4567-7890-abcd-ef1234567891"
Body
Request a presigned S3 PUT URL to upload a model file.
Original filename of the model file.
"sdxl_base_1.0.safetensors"
File size in bytes.
6800000000
Type/subdirectory of the model (e.g. checkpoints, loras, vae). Corresponds to a ComfyUI models subdirectory.
1 - 50"checkpoints"
Relative path inside ComfyUI models directory (e.g. models/checkpoints/sdxl.safetensors). Must not contain .., backslashes, or be absolute.
^(?!/)(?!.*\.\.)(?!.*\\)[\w./ -]+$"models/checkpoints/sdxl_base_1.0.safetensors"
Response
Presigned upload URL generated
S3 PUT URL for uploading the model file. Include all upload_headers in the request.
"https://s3.example.com/bucket/key?X-Amz-Signature=..."
S3 object key to reference when confirming the upload.
"models/019abc12-4567/019def34-5678"
Required HTTP headers for the PUT upload (signed into the URL).
Show child attributes
Show child attributes
