> ## Documentation Index
> Fetch the complete documentation index at: https://docs.domino.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Create a new namespace

> Create a new namespace for organizing tags



## OpenAPI

````yaml /api-specs/cloud/taxonomy-api.json post /namespaces
openapi: 3.0.3
info:
  description: >-
    Microservice responsible for managing the Domino Taxonomy and Properties
    features
  title: Domino Taxonomy Microservice API
  termsOfService: http://swagger.io/terms/
  contact:
    name: Domino Data Lab
    url: https://tickets.dominodatalab.com/hc/en-us
    email: support@dominodatalab.com
  license:
    name: Apache 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0.html
  version: '1.0'
servers:
  - url: https://mycluster.domino.tech/api/taxonomy/v1
    description: >-
      Replace 'mycluster.domino.tech' with your Domino cluster hostname. For
      Domino Cloud customers, that is `your-subdomain`.domino.tech (e.g.,
      acme.domino.tech). For self-hosted deployments, it is the hostname you
      reach the Domino UI at.
security: []
tags:
  - description: Manage taxonomy namespaces.
    name: Tagging - Namespaces
  - description: Manage tags within namespaces.
    name: Tagging - Tags
  - description: Assign, remove, and list tag assignments on entities.
    name: Tagging - Entity Tags
  - description: Look up entities by tag.
    name: Tagging - Entities
  - description: Fetch the full namespace + tag hierarchy.
    name: Tagging - Taxonomy Tree
  - description: Validate and import taxonomy data from a file.
    name: Tagging - Import
  - description: Export the current taxonomy to a file.
    name: Tagging - Export
  - description: Internal-only endpoints for service-account callers.
    name: Tagging - Internal
  - description: Manage property definitions and their groups.
    name: Properties - Definitions
  - description: Read and update an entity's property values.
    name: Properties - Values
  - description: Internal-only endpoints for service-account callers (properties).
    name: Properties - Internal
externalDocs:
  description: OpenAPI
  url: https://swagger.io/resources/open-api/
paths:
  /namespaces:
    post:
      tags:
        - Tagging - Namespaces
      summary: Create a new namespace
      description: Create a new namespace for organizing tags
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/server.CreateNamespaceRequest'
        description: Namespace to create
        required: true
      responses:
        '201':
          description: Created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/taxonomy.Namespace'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/server.HTTPError'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/server.HTTPError'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/server.HTTPError'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/server.HTTPError'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/server.HTTPError'
components:
  schemas:
    server.CreateNamespaceRequest:
      type: object
      required:
        - label
      properties:
        allowMultipleAssignments:
          type: boolean
        description:
          type: string
        label:
          type: string
    taxonomy.Namespace:
      type: object
      properties:
        allowMultipleAssignments:
          type: boolean
        createdAt:
          type: string
        createdBy:
          $ref: '#/components/schemas/taxonomy.User'
        description:
          type: string
        entityCount:
          $ref: '#/components/schemas/taxonomy.EntityCountByType'
        id:
          type: string
        label:
          type: string
        status:
          $ref: '#/components/schemas/taxonomy.NamespaceStatus'
        tagCount:
          type: integer
        updatedAt:
          type: string
        updatedBy:
          $ref: '#/components/schemas/taxonomy.User'
    server.HTTPError:
      type: object
      properties:
        message:
          type: string
    taxonomy.User:
      type: object
      properties:
        userID:
          type: string
        username:
          type: string
    taxonomy.EntityCountByType:
      type: object
      properties:
        app:
          type: integer
        dataset:
          type: integer
        environment:
          type: integer
        model:
          type: integer
        netappVolume:
          type: integer
        policy:
          type: integer
        project:
          type: integer
        projectTemplate:
          type: integer
        total:
          type: integer
    taxonomy.NamespaceStatus:
      type: string
      enum:
        - active
        - deprecated
      x-enum-varnames:
        - NamespaceStatusActive
        - NamespaceStatusDeprecated

````

## Related topics

- [Create and manage Datasets](/cloud/platform-capabilities/core-concepts/data/datasets/create-and-manage-datasets.md)
- [Create a new tag](/api-reference/tagging--tags/create-a-new-tag.md)
- [Create Environments from external custom images](/cloud/admin/platform-configuration/manage-compute-environments/create-envs-from-external-custom-images.md)
- [Datasets administration](/cloud/admin/data-administration/datasets.md)