Create an asset class

Assets module

POST/asset-classesassetClasses.create

An asset class bound to a catalog element (class grain). Creates an asset class. Requires `Idempotency-Key`; a replay returns the original response. The organization is derived from the credential or the parent row, never from the body.

Requires the capability assets.asset.write.
OAuth scopes: assets.
Send an Idempotency-Key header. A replay with the same key returns the original response.
Error statuses: 400, 401, 409, 422, 429. Errors are RFC 9457 problem details.

Request body: AssetClassCreate

assetClasses.create: AssetClassCreate
Field	Type	Required	Description
name	string	Yes	Asset class name.Constraints: length 1 to 300
element_id	string	Yes	Canon element the class is.Constraints: pattern ^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$

{
  "name": "Truss Section 10 ft",
  "element_id": "5000.02.02-XPMS-003"
}

Response 201: AssetClass

assetClasses.create: AssetClass
Field	Type	Required	Description
id	string (uuid)	Yes	Identifier of the asset class.
org_id	string (uuid)	Yes	Identifier of the owning organization, derived from the parent row and never accepted from the caller.
created_at	string (date-time)	Yes	When the row was created.
created_by	string (uuid) \| null	Yes	Identifier of the person who created the row; null when a seed, platform or system process created it.
updated_at	string (date-time)	Yes	When the row was last updated.
updated_by	string (uuid) \| null	Yes	Identifier of the person who last updated the row; null when a seed, platform or system process updated it.
name	string	Yes	Asset class name.Constraints: length 1 to 300
element_id	string	Yes	Canon element the class is.Constraints: pattern ^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$

{
  "id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
  "org_id": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
  "created_at": "2026-10-08T14:30:00Z",
  "created_by": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
  "updated_at": "2026-10-08T14:30:00Z",
  "updated_by": "0192f1e2-7c3a-7b4d-9e8f-1a2b3c4d5e6f",
  "name": "Truss Section 10 ft",
  "element_id": "5000.02.02-XPMS-003"
}

Code samples

curl -X POST "$XOS_BASE_URL/asset-classes" \
  -H "Authorization: Bearer $XOS_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{"name":"Truss Section 10 ft","element_id":"5000.02.02-XPMS-003"}'

const { data } = await xos.assetClasses.create({
    "name": "Truss Section 10 ft",
    "element_id": "5000.02.02-XPMS-003"
  });

response = xos.asset_classes.create({"name": "Truss Section 10 ft", "element_id": "5000.02.02-XPMS-003"})

xos asset-classes create --data '{"name":"Truss Section 10 ft","element_id":"5000.02.02-XPMS-003"}'