openapi: 3.0.1
info:
  title: Holistics Data Pipeline Datasets API
  description: REST API for the Holistics business intelligence and self-service analytics platform. Covers the Data Pipeline API (execute data imports/transforms and poll ETL jobs), report and dataset query APIs, and asynchronous data export (CSV/JSON/XLSX). All requests authenticate with a per-user API key passed in the X-Holistics-Key header. Regional hosts are secure.holistics.io (APAC), us.holistics.io (US), and eu.holistics.io (EU).
  termsOfService: https://www.holistics.io/terms/
  contact:
    name: Holistics Support
    url: https://www.holistics.io
    email: support@holistics.io
  version: '2.0'
servers:
- url: https://secure.holistics.io/api/v2
  description: APAC region
- url: https://us.holistics.io/api/v2
  description: US region
- url: https://eu.holistics.io/api/v2
  description: EU region
security:
- HolisticsKey: []
tags:
- name: Datasets
  description: Query the Holistics dataset semantic layer.
paths:
  /data_sets:
    get:
      operationId: listDataSets
      tags:
      - Datasets
      summary: List available datasets
      description: Returns the datasets the calling user can query.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/DataSet'
  /data_sets/{id}:
    get:
      operationId: getDataSet
      tags:
      - Datasets
      summary: Get dataset dimensions and metrics
      description: Returns the available dimensions and metrics for a dataset.
      parameters:
      - $ref: '#/components/parameters/PathId'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DataSetDetail'
  /data_sets/{id}/submit_query:
    post:
      operationId: submitDataSetQuery
      tags:
      - Datasets
      summary: Query a dataset
      description: Executes a query against a dataset and returns result rows.
      parameters:
      - $ref: '#/components/parameters/PathId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/QueryRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/QueryResult'
  /data_sets/{id}/generate_sql:
    post:
      operationId: generateDataSetSql
      tags:
      - Datasets
      summary: Generate SQL without executing
      description: Returns the SQL that would be generated for a dataset query.
      parameters:
      - $ref: '#/components/parameters/PathId'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/QueryRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  sql:
                    type: string
components:
  schemas:
    DataSet:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        title:
          type: string
    DataSetDetail:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        dimensions:
          type: array
          items:
            type: object
            properties:
              name:
                type: string
              type:
                type: string
        metrics:
          type: array
          items:
            type: object
            properties:
              name:
                type: string
              type:
                type: string
    QueryResult:
      type: object
      properties:
        job_id:
          type: string
        status:
          type: string
        columns:
          type: array
          items:
            type: string
        data:
          type: array
          items:
            type: array
            items: {}
    QueryRequest:
      type: object
      properties:
        dimensions:
          type: array
          description: Fields to group results by.
          items:
            type: string
        metrics:
          type: array
          description: Aggregated measures to calculate.
          items:
            type: string
        filters:
          type: array
          description: Conditions for filtering data.
          items:
            type: object
        limit:
          type: integer
          description: Maximum number of rows returned.
  parameters:
    PathId:
      name: id
      in: path
      required: true
      schema:
        type: integer
  securitySchemes:
    HolisticsKey:
      type: apiKey
      in: header
      name: X-Holistics-Key
      description: Per-user API key generated from Holistics user settings.