openapi: 3.0.1
info:
  title: 'Climate Engine API v1: climate-engine-pro Home Zonal Statistics API'
  description: On-demand geospatial processing of satellite and gridded climate datasets on Google Earth Engine. The Climate Engine REST API returns timeseries, map tiles (mapid), asynchronous raster exports, zonal statistics, pre-built reports, and dataset metadata over point coordinates and GeoJSON feature collections. Datasets include Landsat, Sentinel, MODIS, GRIDMET, ERA5, CHIRPS, and many more.
  termsOfService: https://www.climateengine.com
  contact:
    name: Climate Engine
    url: https://support.climateengine.org
  version: 0.1.0
servers:
- url: https://api.climateengine.org
  description: Climate Engine production API
security:
- APIKeyHeader: []
tags:
- name: Zonal Statistics
  description: Statistics reduced over coordinates and feature collections.
paths:
  /zonal_stats/static_dataset/coordinates:
    post:
      operationId: zonalStatsStaticDatasetCoordinates
      tags:
      - Zonal Statistics
      summary: Static Dataset Coordinates
      description: Computes zonal statistics for a static (no time dependence) dataset over coordinates.
      parameters:
      - $ref: '#/components/parameters/Coordinates'
      - $ref: '#/components/parameters/SimplifyGeometry'
      - $ref: '#/components/parameters/Buffer'
      - name: area_reducer
        in: query
        required: false
        schema:
          type: string
          default: mean
        description: Spatial reducer applied over the geometry (e.g. mean, max, min).
      - $ref: '#/components/parameters/Dataset'
      - $ref: '#/components/parameters/Variable'
      - $ref: '#/components/parameters/ExportFormat'
      responses:
        '200':
          description: Zonal statistics result.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /zonal_stats/pixel_count/coordinates:
    post:
      operationId: zonalStatsPixelCountCoordinates
      tags:
      - Zonal Statistics
      summary: Pixel Count Coordinates
      description: Computes the number of pixels in each category (e.g. drought category) over coordinates.
      parameters:
      - $ref: '#/components/parameters/Coordinates'
      - $ref: '#/components/parameters/Dataset'
      - $ref: '#/components/parameters/Variable'
      responses:
        '200':
          description: Pixel count statistics.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /zonal_stats/group_by/feature_collection:
    post:
      operationId: zonalStatsGroupByFeatureCollection
      tags:
      - Zonal Statistics
      summary: Group By Feature Collection
      description: Computes grouped zonal statistics over a GeoJSON feature collection.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Grouped zonal statistics.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /zonal_stats/temporal_dataset/coordinates:
    get:
      operationId: zonalStatsTemporalDatasetCoordinates
      tags:
      - Zonal Statistics
      summary: Temporal Dataset Coordinates
      description: Computes temporal-dataset zonal statistics reduced over coordinate geometries.
      parameters:
      - $ref: '#/components/parameters/Coordinates'
      - $ref: '#/components/parameters/Dataset'
      - $ref: '#/components/parameters/Variable'
      - $ref: '#/components/parameters/StartDate'
      - $ref: '#/components/parameters/EndDate'
      responses:
        '200':
          description: Temporal zonal statistics.
          content:
            application/json:
              schema:
                type: object
components:
  responses:
    ValidationError:
      description: Validation error.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/HTTPValidationError'
  parameters:
    EndDate:
      name: end_date
      in: query
      required: false
      schema:
        type: string
      description: End date (YYYY-MM-DD).
    Buffer:
      name: buffer
      in: query
      required: false
      schema:
        type: integer
        nullable: true
      description: Buffer in meters applied to the geometry.
    ExportFormat:
      name: export_format
      in: query
      required: false
      schema:
        type: string
        nullable: true
      description: Optional response/export format.
    Dataset:
      name: dataset
      in: query
      required: false
      schema:
        type: string
        default: GRIDMET
      description: Dataset name (e.g. GRIDMET, ERA5, MODIS, CHIRPS).
    StartDate:
      name: start_date
      in: query
      required: false
      schema:
        type: string
      description: Start date (YYYY-MM-DD).
    Variable:
      name: variable
      in: query
      required: false
      schema:
        type: string
        default: tmmn, tmmx
      description: Comma-separated variable name(s).
    SimplifyGeometry:
      name: simplify_geometry
      in: query
      required: false
      schema:
        type: string
        nullable: true
      description: maxError in meters for geometry simplification.
    Coordinates:
      name: coordinates
      in: query
      required: false
      schema:
        type: string
        default: '[[-121.61,38.78]]'
      description: Point or polygon coordinates as a JSON-encoded array.
  schemas:
    ValidationError:
      type: object
      title: ValidationError
      properties:
        loc:
          type: array
          items:
            type: string
        msg:
          type: string
        type:
          type: string
    HTTPValidationError:
      type: object
      title: HTTPValidationError
      properties:
        detail:
          type: array
          items:
            $ref: '#/components/schemas/ValidationError'
  securitySchemes:
    APIKeyHeader:
      type: apiKey
      in: header
      name: Authorization
      description: API key issued by the Climate Engine team, sent in the Authorization header. Request a key from the ClimateEngine.org team.