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

# List tags

> List tags in a collection.



## OpenAPI

````yaml get /collections/{collectionName}/tags
openapi: 3.1.1
info:
  title: LambdaDB API
  summary: LambdaDB Open API Spec
  version: 1.1.1
servers:
  - url: https://{projectHost}
    description: LambdaDB API endpoints
    variables:
      projectHost:
        description: The project-scoped URL of the API
        default: api.lambdadb.ai/projects/example-project
security: []
tags:
  - name: collections
    description: Create, describe, configure, list, and delete collections.
  - name: versioning
    description: Manage branches, tags, and aliases within a collection.
  - name: collections.docs
    description: Write, fetch, list, and bulk upload documents.
paths:
  /collections/{collectionName}/tags:
    get:
      tags:
        - versioning
      summary: List Tags
      description: List tags in a collection.
      operationId: listTags
      parameters:
        - $ref: '#/components/parameters/CollectionName'
      responses:
        '200':
          description: Tag list.
          content:
            application/json:
              schema:
                type: object
                properties:
                  tags:
                    type: array
                    items:
                      $ref: '#/components/schemas/TagDetails'
                required:
                  - tags
              examples:
                example:
                  value:
                    tags:
                      - name: validated-2026-09
                        snapshotId: snapshot-id
                        createdAt: 1788336000000
                        snapshotCommittedAt: 1788335940000
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BadRequest'
              examples:
                example:
                  summary: Example response for bad request
                  value:
                    message: Invalid request
        '401':
          description: Unauthenticated
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Unauthenticated'
              examples:
                example:
                  summary: Example response for authentication failure
                  value:
                    message: Authentication failed
        '404':
          $ref: '#/components/responses/ResourceNotFound'
        '429':
          description: Too many requests
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TooManyRequests'
              examples:
                example:
                  summary: Example response for too many requests
                  value:
                    message: Too many requests
          headers:
            Retry-After:
              description: >-
                Optional retry delay in seconds. Not present on every 429
                response.
              schema:
                type: string
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InternalServerError'
              examples:
                example:
                  summary: Example response for internal server error
                  value:
                    message: Internal server error
        '502':
          $ref: '#/components/responses/BadGateway'
        '503':
          $ref: '#/components/responses/ServiceUnavailable'
        '504':
          $ref: '#/components/responses/GatewayTimeout'
      security:
        - ProjectApiKey: []
components:
  parameters:
    CollectionName:
      in: path
      name: collectionName
      description: Collection name.
      required: true
      schema:
        type: string
  schemas:
    TagDetails:
      title: TagDetails
      type: object
      properties:
        name:
          type: string
        snapshotId:
          type: string
          description: >-
            Immutable snapshot pinned by the tag. A tag cannot pin an empty
            head.
        snapshotCommittedAt:
          type: integer
          format: int64
          description: Pinned snapshot commit time as Unix epoch milliseconds.
        createdAt:
          type: integer
          format: int64
          description: >-
            Tag creation time as Unix epoch milliseconds, independent of the
            pinned snapshot commit time.
      required:
        - name
        - snapshotId
        - snapshotCommittedAt
        - createdAt
    BadRequest:
      title: BadRequest
      type: object
      properties:
        message:
          type: string
    Unauthenticated:
      title: Unauthenticated
      type: object
      properties:
        message:
          type: string
    TooManyRequests:
      title: TooManyRequests
      type: object
      properties:
        message:
          type: string
    InternalServerError:
      title: InternalServerError
      type: object
      properties:
        message:
          type: string
    ResourceNotFound:
      title: ResourceNotFound
      type: object
      properties:
        message:
          type: string
    MessageResponse:
      type: object
      properties:
        message:
          type: string
      required:
        - message
  responses:
    ResourceNotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ResourceNotFound'
          examples:
            example:
              summary: Example response for resource not found
              value:
                message: Resource not found
    BadGateway:
      description: >-
        Unexpected downstream failure. A failed write response may leave its
        outcome uncertain.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/MessageResponse'
    ServiceUnavailable:
      description: >-
        Transient catalog or storage dependency failure. Use bounded retries
        where the operation permits.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/MessageResponse'
    GatewayTimeout:
      description: >-
        Gateway request deadline exceeded. A write may have been applied; verify
        its outcome before retrying.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/MessageResponse'
  securitySchemes:
    ProjectApiKey:
      type: apiKey
      in: header
      name: x-api-key
      description: Project API Key.
      x-speakeasy-example: <YOUR_PROJECT_API_KEY>

````