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OpenAPI Specification

openapi: 3.2.0
info:
  title: langfuse AnnotationQueues Dataset Items API
  version: '1.0'
  description: '## Authentication


    Authenticate with the API using [Basic Auth](https://en.wikipedia.org/wiki/Basic_access_authentication), get API keys in the project settings:


    - username: Langfuse Public Key

    - password: Langfuse Secret Key


    ## Exports


    - OpenAPI spec: https://cloud.langfuse.com/generated/api/openapi.yml'
servers:
- url: https://cloud.langfuse.com/api/public
  description: Base URL declared by the provider in apis.yml (roadmap#122).
tags:
- name: DatasetItems
paths:
  /api/public/dataset-items:
    post:
      description: Create a dataset item
      operationId: datasetItems_create
      tags:
      - DatasetItems
      parameters: []
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DatasetItem'
        '400':
          description: ''
          content:
            application/json:
              schema: {}
        '401':
          description: ''
          content:
            application/json:
              schema: {}
        '403':
          description: ''
          content:
            application/json:
              schema: {}
        '404':
          description: ''
          content:
            application/json:
              schema: {}
        '405':
          description: ''
          content:
            application/json:
              schema: {}
      security:
      - BasicAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateDatasetItemRequest'
    get:
      description: 'Get dataset items. Optionally specify a version to get the items as they existed at that point in time.

        Note: If version parameter is provided, datasetName must also be provided.'
      operationId: datasetItems_list
      tags:
      - DatasetItems
      parameters:
      - name: datasetName
        in: query
        required: false
        schema:
          type:
          - string
          - 'null'
      - name: sourceTraceId
        in: query
        required: false
        schema:
          type:
          - string
          - 'null'
      - name: sourceObservationId
        in: query
        required: false
        schema:
          type:
          - string
          - 'null'
      - name: version
        in: query
        description: 'ISO 8601 timestamp (RFC 3339, Section 5.6) in UTC (e.g., "2026-01-21T14:35:42Z").

          If provided, returns state of dataset at this timestamp.

          If not provided, returns the latest version. Requires datasetName to be specified.'
        required: false
        schema:
          type:
          - string
          - 'null'
          format: date-time
      - name: page
        in: query
        description: page number, starts at 1
        required: false
        schema:
          type:
          - integer
          - 'null'
      - name: limit
        in: query
        description: limit of items per page
        required: false
        schema:
          type:
          - integer
          - 'null'
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaginatedDatasetItems'
        '400':
          description: ''
          content:
            application/json:
              schema: {}
        '401':
          description: ''
          content:
            application/json:
              schema: {}
        '403':
          description: ''
          content:
            application/json:
              schema: {}
        '404':
          description: ''
          content:
            application/json:
              schema: {}
        '405':
          description: ''
          content:
            application/json:
              schema: {}
      security:
      - BasicAuth: []
  /api/public/dataset-items/{id}:
    get:
      description: Get a dataset item
      operationId: datasetItems_get
      tags:
      - DatasetItems
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DatasetItem'
        '400':
          description: ''
          content:
            application/json:
              schema: {}
        '401':
          description: ''
          content:
            application/json:
              schema: {}
        '403':
          description: ''
          content:
            application/json:
              schema: {}
        '404':
          description: ''
          content:
            application/json:
              schema: {}
        '405':
          description: ''
          content:
            application/json:
              schema: {}
      security:
      - BasicAuth: []
    delete:
      description: Delete a dataset item and all its run items. This action is irreversible.
      operationId: datasetItems_delete
      tags:
      - DatasetItems
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteDatasetItemResponse'
        '400':
          description: ''
          content:
            application/json:
              schema: {}
        '401':
          description: ''
          content:
            application/json:
              schema: {}
        '403':
          description: ''
          content:
            application/json:
              schema: {}
        '404':
          description: ''
          content:
            application/json:
              schema: {}
        '405':
          description: ''
          content:
            application/json:
              schema: {}
      security:
      - BasicAuth: []
components:
  schemas:
    DatasetStatus:
      title: DatasetStatus
      type: string
      enum:
      - ACTIVE
      - ARCHIVED
    DeleteDatasetItemResponse:
      title: DeleteDatasetItemResponse
      type: object
      properties:
        message:
          type: string
          description: Success message after deletion
      required:
      - message
    PaginatedDatasetItems:
      title: PaginatedDatasetItems
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/DatasetItem'
        meta:
          $ref: '#/components/schemas/utilsMetaResponse'
      required:
      - data
      - meta
    utilsMetaResponse:
      title: utilsMetaResponse
      type: object
      properties:
        page:
          type: integer
          description: current page number
        limit:
          type: integer
          description: number of items per page
        totalItems:
          type: integer
          description: number of total items given the current filters/selection (if any)
        totalPages:
          type: integer
          description: number of total pages given the current limit
      required:
      - page
      - limit
      - totalItems
      - totalPages
    CreateDatasetItemRequest:
      title: CreateDatasetItemRequest
      type: object
      properties:
        datasetName:
          type: string
        input: {}
        expectedOutput: {}
        metadata: {}
        sourceTraceId:
          type:
          - string
          - 'null'
        sourceObservationId:
          type:
          - string
          - 'null'
        id:
          type:
          - string
          - 'null'
          description: Dataset items are upserted on their id. Id needs to be unique (project-level) and cannot be reused across datasets.
        status:
          $ref: '#/components/schemas/DatasetStatus'
          description: Defaults to ACTIVE for newly created items
      required:
      - datasetName
    DatasetItem:
      title: DatasetItem
      type: object
      properties:
        id:
          type: string
        status:
          $ref: '#/components/schemas/DatasetStatus'
        input:
          description: Input data for the dataset item
        expectedOutput:
          description: Expected output for the dataset item
        metadata:
          description: Metadata associated with the dataset item
        sourceTraceId:
          type:
          - string
          - 'null'
          description: The trace ID that sourced this dataset item
        sourceObservationId:
          type:
          - string
          - 'null'
          description: The observation ID that sourced this dataset item
        datasetId:
          type: string
        datasetName:
          type: string
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time
      required:
      - id
      - status
      - input
      - expectedOutput
      - metadata
      - datasetId
      - datasetName
      - createdAt
      - updatedAt
  securitySchemes:
    BasicAuth:
      type: http
      scheme: basic