ark_asset_openapi_host to be a regional Ark endpoint (ark.*.volcengineapi.com or ark.*.byteplusapi.com).{
"CallbackURL": "https://your-app.example.com/callback",
"ProjectName": "default"
}curl --location '/v1/ark/assets/CreateVisualValidateSession?channel_id=undefined' \
--header 'X-Ark-Channel-Id;' \
--header 'Content-Type: application/json' \
--data '{
"CallbackURL": "https://your-app.example.com/callback",
"ProjectName": "default"
}'{
"ResponseMetadata": {
"RequestId": "20260324120000-00000000-000000000000",
"Action": "CreateAsset",
"Version": "2024-01-01",
"Service": "ark",
"Region": "cn-beijing"
},
"Result": {
"Id": "asset-20260318071009-abc",
"Status": "Processing"
}
}