curl --request POST \
--url https://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--header 'Idempotency-Key: <idempotency-key>' \
--data '
{
"kind": "card",
"file_name": "launch.webp",
"content_type": "image/webp",
"byte_size": 248312,
"parts": [
{
"part_number": 1,
"checksum_crc64nvme": "rosUhgp5mIg="
}
]
}
'import requests
url = "https://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads"
payload = {
"kind": "card",
"file_name": "launch.webp",
"content_type": "image/webp",
"byte_size": 248312,
"parts": [
{
"part_number": 1,
"checksum_crc64nvme": "rosUhgp5mIg="
}
]
}
headers = {
"Idempotency-Key": "<idempotency-key>",
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {
'Idempotency-Key': '<idempotency-key>',
Authorization: 'Bearer <token>',
'Content-Type': 'application/json'
},
body: JSON.stringify({
kind: 'card',
file_name: 'launch.webp',
content_type: 'image/webp',
byte_size: 248312,
parts: [{part_number: 1, checksum_crc64nvme: 'rosUhgp5mIg='}]
})
};
fetch('https://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads', 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.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads",
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([
'kind' => 'card',
'file_name' => 'launch.webp',
'content_type' => 'image/webp',
'byte_size' => 248312,
'parts' => [
[
'part_number' => 1,
'checksum_crc64nvme' => 'rosUhgp5mIg='
]
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json",
"Idempotency-Key: <idempotency-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://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads"
payload := strings.NewReader("{\n \"kind\": \"card\",\n \"file_name\": \"launch.webp\",\n \"content_type\": \"image/webp\",\n \"byte_size\": 248312,\n \"parts\": [\n {\n \"part_number\": 1,\n \"checksum_crc64nvme\": \"rosUhgp5mIg=\"\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Idempotency-Key", "<idempotency-key>")
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.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads")
.header("Idempotency-Key", "<idempotency-key>")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"kind\": \"card\",\n \"file_name\": \"launch.webp\",\n \"content_type\": \"image/webp\",\n \"byte_size\": 248312,\n \"parts\": [\n {\n \"part_number\": 1,\n \"checksum_crc64nvme\": \"rosUhgp5mIg=\"\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"kind\": \"card\",\n \"file_name\": \"launch.webp\",\n \"content_type\": \"image/webp\",\n \"byte_size\": 248312,\n \"parts\": [\n {\n \"part_number\": 1,\n \"checksum_crc64nvme\": \"rosUhgp5mIg=\"\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"id": "upl_01JABCDEF",
"object": "asset_upload",
"asset_id": "ast_01JABCDEF",
"protocol": "multipart",
"part_size": 5242881,
"parts": [
{
"part_number": 2,
"upload_url": "<string>",
"required_headers": {
"x-amz-checksum-crc64nvme": "rosUhgp5mIg="
}
}
],
"byte_size": 2,
"expires_at": "2026-08-09T12:00:00.000Z"
}Create Asset Upload
Create a multipart upload. Calculate one CRC64NVME checksum for each part. Send each part to its upload_url with all required_headers. Record each response ETag. Then complete the upload.
curl --request POST \
--url https://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--header 'Idempotency-Key: <idempotency-key>' \
--data '
{
"kind": "card",
"file_name": "launch.webp",
"content_type": "image/webp",
"byte_size": 248312,
"parts": [
{
"part_number": 1,
"checksum_crc64nvme": "rosUhgp5mIg="
}
]
}
'import requests
url = "https://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads"
payload = {
"kind": "card",
"file_name": "launch.webp",
"content_type": "image/webp",
"byte_size": 248312,
"parts": [
{
"part_number": 1,
"checksum_crc64nvme": "rosUhgp5mIg="
}
]
}
headers = {
"Idempotency-Key": "<idempotency-key>",
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {
'Idempotency-Key': '<idempotency-key>',
Authorization: 'Bearer <token>',
'Content-Type': 'application/json'
},
body: JSON.stringify({
kind: 'card',
file_name: 'launch.webp',
content_type: 'image/webp',
byte_size: 248312,
parts: [{part_number: 1, checksum_crc64nvme: 'rosUhgp5mIg='}]
})
};
fetch('https://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads', 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.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads",
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([
'kind' => 'card',
'file_name' => 'launch.webp',
'content_type' => 'image/webp',
'byte_size' => 248312,
'parts' => [
[
'part_number' => 1,
'checksum_crc64nvme' => 'rosUhgp5mIg='
]
]
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json",
"Idempotency-Key: <idempotency-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://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads"
payload := strings.NewReader("{\n \"kind\": \"card\",\n \"file_name\": \"launch.webp\",\n \"content_type\": \"image/webp\",\n \"byte_size\": 248312,\n \"parts\": [\n {\n \"part_number\": 1,\n \"checksum_crc64nvme\": \"rosUhgp5mIg=\"\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Idempotency-Key", "<idempotency-key>")
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.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads")
.header("Idempotency-Key", "<idempotency-key>")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"kind\": \"card\",\n \"file_name\": \"launch.webp\",\n \"content_type\": \"image/webp\",\n \"byte_size\": 248312,\n \"parts\": [\n {\n \"part_number\": 1,\n \"checksum_crc64nvme\": \"rosUhgp5mIg=\"\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.openpmm.com/v1/workspaces/{workspace_id}/asset-uploads")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"kind\": \"card\",\n \"file_name\": \"launch.webp\",\n \"content_type\": \"image/webp\",\n \"byte_size\": 248312,\n \"parts\": [\n {\n \"part_number\": 1,\n \"checksum_crc64nvme\": \"rosUhgp5mIg=\"\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"id": "upl_01JABCDEF",
"object": "asset_upload",
"asset_id": "ast_01JABCDEF",
"protocol": "multipart",
"part_size": 5242881,
"parts": [
{
"part_number": 2,
"upload_url": "<string>",
"required_headers": {
"x-amz-checksum-crc64nvme": "rosUhgp5mIg="
}
}
],
"byte_size": 2,
"expires_at": "2026-08-09T12:00:00.000Z"
}Authorizations
Send an account API key in the Authorization: Bearer <key> header.
Headers
Optional request ID. OpenPMM returns this value when it is valid. Otherwise, OpenPMM creates a request ID.
128A unique key for this operation. Use the same key when you retry the same request. Different input with the same key returns 409.
1 - 200Path Parameters
Unique workspace ID.
"ws_01JABCDEF"
Body
File data that OpenPMM uses to prepare the upload.
Generic asset kind. Use video for a video file. This value does not select a provider placement.
card, video, poster 1 - 5001 - 200x >= 11 - 10000 elementsShow child attributes
Show child attributes
Response
Upload instructions and the reserved asset identifier.
Unique upload ID.
"upl_01JABCDEF"
"asset_upload"Unique asset ID.
"ast_01JABCDEF"
"multipart"x >= 52428801 - 10000 elementsShow child attributes
Show child attributes
x >= 1"2026-08-09T12:00:00.000Z"
