v52

latestOpenAPI 3.1.1Apache 2.0raw.githubusercontent.com2026-08-0354155395.9 KB

Namespace

Metadata

Create a new namespace

Create new namespace id.

During the creation process, the implementation may modify user-provided properties, such as adding additional properties like created_at to user-provided properties, omitting any specific property, or performing actions based on any property value.

post/v1/namespace/{id}/create

Path parameters

idstring required

string identifier of an object in a namespace, following the Lance Namespace spec. When the value is equal to the delimiter, it represents the root namespace. For example, v1/namespace/$/list performs a ListNamespace on the root namespace.

Query parameters

delimiterstring

An optional delimiter of the string identifier, following the Lance Namespace spec. When not specified, the $ delimiter must be used.

Request body

{"stackTrail":"components:schemas:CreateNamespaceRequest:properties:context","oasType":"schema","type":"unknown","description":"Arbitrary context as key-value pairs.\nHow to use the context is custom to the specific implementation.\n\nOn a request, it carries caller-provided context to the implementation.\nOn a response, it carries implementation-provided context back to the caller.\n\nREST NAMESPACE ONLY\nContext entries are mapped to and from HTTP headers using the `header.` prefix:\n- On a request, any entry whose key starts with `header.` is sent as an HTTP\n request header with the prefix stripped. For example, the entry\n `{\"header.Authorization\": \"Bearer abc\"}` is sent as the request header\n `Authorization: Bearer abc`.\n- On a response, every HTTP response header is returned as an entry whose key is the\n header name prefixed with `header.`. For example, the response header\n `x-request-id: abc123` is returned as the entry `{\"header.x-request-id\": \"abc123\"}`.\n"}

idstring[]

modestring

There are three modes when trying to create a namespace, to differentiate the behavior when a namespace of the same name already exists. Case insensitive, supports both PascalCase and snake_case. Valid values are:

Create: the operation fails with 409.
ExistOk: the operation succeeds and the existing namespace is kept.
Overwrite: the existing namespace is dropped and a new empty namespace with this name is created.

{"stackTrail":"components:schemas:CreateNamespaceRequest:properties:properties","oasType":"schema","type":"unknown","description":"Properties stored on the namespace, if supported by the implementation.\n"}

Example request

{
  "mode": "mode",
  "identity": {
    "api_key": "api_key",
    "auth_token": "auth_token"
  },
  "context": {
    "key": "context"
  },
  "id": [
    "id",
    "id"
  ],
  "properties": {
    "key": "properties"
  }
}

Response

Result of creating a namespace

{"stackTrail":"components:schemas:CreateNamespaceResponse:properties:context","oasType":"schema","type":"unknown","description":"Arbitrary context as key-value pairs.\nHow to use the context is custom to the specific implementation.\n\nOn a request, it carries caller-provided context to the implementation.\nOn a response, it carries implementation-provided context back to the caller.\n\nREST NAMESPACE ONLY\nContext entries are mapped to and from HTTP headers using the `header.` prefix:\n- On a request, any entry whose key starts with `header.` is sent as an HTTP\n request header with the prefix stripped. For example, the entry\n `{\"header.Authorization\": \"Bearer abc\"}` is sent as the request header\n `Authorization: Bearer abc`.\n- On a response, every HTTP response header is returned as an entry whose key is the\n header name prefixed with `header.`. For example, the response header\n `x-request-id: abc123` is returned as the entry `{\"header.x-request-id\": \"abc123\"}`.\n"}

transaction_idstring

Optional transaction identifier

{"stackTrail":"components:schemas:CreateNamespaceResponse:properties:properties","oasType":"schema","type":"unknown","description":"Properties after the namespace is created.\n\nIf the server does not support namespace properties, it should return null for this field.\nIf namespace properties are supported, but none are set, it should return an empty object.\n"}

Example response

{
  "transaction_id": "transaction_id",
  "context": {
    "key": "context"
  },
  "properties": {
    "key": "properties"
  }
}

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