Request signed upload URL (recommended)

curl --request POST \
  --url https://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "content_type": "<string>",
  "file_size_bytes": 123,
  "file_name": "<string>"
}
'

import requests

url = "https://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url"

payload = {
    "content_type": "<string>",
    "file_size_bytes": 123,
    "file_name": "<string>"
}
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({content_type: '<string>', file_size_bytes: 123, file_name: '<string>'})
};

fetch('https://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url', 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.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url",
  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([
    'content_type' => '<string>',
    'file_size_bytes' => 123,
    'file_name' => '<string>'
  ]),
  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://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url"

	payload := strings.NewReader("{\n  \"content_type\": \"<string>\",\n  \"file_size_bytes\": 123,\n  \"file_name\": \"<string>\"\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://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"content_type\": \"<string>\",\n  \"file_size_bytes\": 123,\n  \"file_name\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url")

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  \"content_type\": \"<string>\",\n  \"file_size_bytes\": 123,\n  \"file_name\": \"<string>\"\n}"

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

{
  "file_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "upload_url": "<string>",
  "content_type": "<string>"
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

Files

Request signed upload URL (recommended)

Get a signed URL to upload a file directly to storage, bypassing the server. This is the recommended upload method for large files.

Flow:

Call this endpoint with content_type and file_size_bytes
POST to the returned upload_url with header x-goog-resumable: start to get a session URI
PUT your file content to the session URI (supports chunked/resumable uploads)
Use the returned file_id as input to generation endpoints

Allowed types: audio/mpeg, audio/wav, image/jpeg, image/png, image/webp, video/mp4. Max size: 64 MB. Upload URL expires in 15 minutes.

POST

workspaces

{workspace_id}

files

upload-url

Request signed upload URL (recommended)

curl --request POST \
  --url https://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "content_type": "<string>",
  "file_size_bytes": 123,
  "file_name": "<string>"
}
'

import requests

url = "https://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url"

payload = {
    "content_type": "<string>",
    "file_size_bytes": 123,
    "file_name": "<string>"
}
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({content_type: '<string>', file_size_bytes: 123, file_name: '<string>'})
};

fetch('https://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url', 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.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url",
  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([
    'content_type' => '<string>',
    'file_size_bytes' => 123,
    'file_name' => '<string>'
  ]),
  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://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url"

	payload := strings.NewReader("{\n  \"content_type\": \"<string>\",\n  \"file_size_bytes\": 123,\n  \"file_name\": \"<string>\"\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://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"content_type\": \"<string>\",\n  \"file_size_bytes\": 123,\n  \"file_name\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.app.layer.ai/api/v1/workspaces/{workspace_id}/files/upload-url")

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  \"content_type\": \"<string>\",\n  \"file_size_bytes\": 123,\n  \"file_name\": \"<string>\"\n}"

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

{
  "file_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "upload_url": "<string>",
  "content_type": "<string>"
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

{
  "type": "https://api.layer.ai/errors/ERROR_CODE",
  "title": "Error Title",
  "status": 400,
  "detail": "Human-readable description."
}

Authorizations

Authorization

string

header

required

Personal Access Token or OAuth2 JWT. Create a PAT at app.layer.ai → Settings → Personal Access Tokens.

Path Parameters

workspace_id

string<uuid>

required

Body

application/json

content_type

string

required

MIME type of the file to upload.

file_size_bytes

integer

required

Expected file size in bytes. Used to enforce upload limits.

file_name

string | null

Optional file name.

source_type

enum<string> | null

Optional source type for the file. Use 'mask' to upload a mask for inpainting/masked-edit, then pass the returned file_id as the mask in a generation request. Mask uploads must be image files.

Available options:

pose,

reference,

mask,

composite,

google_drive,

transformed_reference

Response

Successful Response

file_id

string<uuid>

required

Unique identifier for the file. Use as input to generation endpoints after upload completes.

upload_url

string

required

Signed upload URL. POST to this URL to initiate a resumable upload, then PUT file chunks to the session URI returned in the Location header. Expires in 15 minutes.

content_type

string

required

MIME type to use when uploading.

source_type

enum<string> | null

Source type the file was created with, echoed from the request.

Available options:

pose,

reference,

mask,

composite,

google_drive,

transformed_reference

Get inference run

Overview

Workspaces

Models

Workflows

Inferences

Files

Request signed upload URL (recommended)

Authorizations

Path Parameters

Body

Response