Climate Engine Zonal Statistics API

openapi: 3.0.1
info:
  title: 'Climate Engine API v1: climate-engine-pro'
  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: Home
    description: Key validation, expiration, and user quotas.
  - name: Metadata
    description: Dataset dates, variables, county names, and raster classifications.
  - name: Timeseries
    description: Native, interannual, standard-index, and regression time series.
  - name: Zonal Statistics
    description: Statistics reduced over coordinates and feature collections.
  - name: Raster
    description: Earth Engine map IDs and asynchronous raster exports.
  - name: Reports
    description: Pre-built drought, vegetation, and site characterization reports.
paths:
  /home/validate_key:
    get:
      operationId: validateKey
      tags:
        - Home
      summary: Validate Token
      description: Validates the API key supplied in the Authorization header.
      responses:
        '200':
          description: Key is valid.
          content:
            application/json:
              schema:
                type: object
        '403':
          description: Invalid or missing API key.
  /home/key_expiration:
    get:
      operationId: keyExpiration
      tags:
        - Home
      summary: Key Expiration
      description: Returns the expiration date of the authenticated API key.
      responses:
        '200':
          description: Expiration information.
          content:
            application/json:
              schema:
                type: object
  /home/user/quotas:
    get:
      operationId: userQuotas
      tags:
        - Home
      summary: User Quotas
      description: Returns the authenticated user's quota usage and limits.
      responses:
        '200':
          description: Quota usage and limits.
          content:
            application/json:
              schema:
                type: object
  /metadata/dataset_dates:
    get:
      operationId: metadataDatasetDates
      tags:
        - Metadata
      summary: Metadata Dataset Dates
      description: Returns the available date range for a dataset.
      parameters:
        - $ref: '#/components/parameters/Dataset'
        - $ref: '#/components/parameters/ExportFormat'
      responses:
        '200':
          description: Date range for the dataset.
          content:
            application/json:
              schema:
                type: object
  /metadata/dataset_variables:
    get:
      operationId: metadataDatasetVariables
      tags:
        - Metadata
      summary: Metadata Dataset Variables
      description: Returns the variables available for a dataset.
      parameters:
        - $ref: '#/components/parameters/Dataset'
        - $ref: '#/components/parameters/ExportFormat'
      responses:
        '200':
          description: Variables available for the dataset.
          content:
            application/json:
              schema:
                type: object
  /metadata/county_names:
    get:
      operationId: metadataCountyNames
      tags:
        - Metadata
      summary: County Names
      description: Returns county names usable as predefined feature regions.
      parameters:
        - $ref: '#/components/parameters/ExportFormat'
      responses:
        '200':
          description: County names.
          content:
            application/json:
              schema:
                type: object
  /timeseries/native/coordinates:
    post:
      operationId: timeseriesNativeCoordinates
      tags:
        - Timeseries
      summary: Native Coordinates
      description: >-
        Generates a raw (native) time series for a dataset over point or polygon
        coordinates.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NativeCoordinates'
      responses:
        '200':
          description: Native time series.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /timeseries/native/feature_collection:
    post:
      operationId: timeseriesNativeFeatureCollection
      tags:
        - Timeseries
      summary: Native Feature Collection
      description: >-
        Generates a raw (native) time series for a dataset reduced over a GeoJSON
        feature collection.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NativeFeatureCollection'
      responses:
        '200':
          description: Native time series.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /timeseries/native/forecasts/coordinates:
    post:
      operationId: timeseriesNativeForecastCoordinates
      tags:
        - Timeseries
      summary: Forecast Coordinates
      description: Generates a forecast time series over point coordinates.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NativeCoordinates'
      responses:
        '200':
          description: Forecast time series.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /timeseries/interannual/coordinates:
    post:
      operationId: timeseriesInterannualCoordinates
      tags:
        - Timeseries
      summary: Interannual Coordinates
      description: Generates an interannual time series over point coordinates.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NativeCoordinates'
      responses:
        '200':
          description: Interannual time series.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /timeseries/regression/coordinates:
    post:
      operationId: timeseriesRegressionCoordinates
      tags:
        - Timeseries
      summary: Regression Coordinates
      description: >-
        Generates a regression time series between two variables over point
        coordinates.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NativeCoordinates'
      responses:
        '200':
          description: Regression time series.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /timeseries/standard_index/coordinates:
    post:
      operationId: timeseriesStandardIndexCoordinates
      tags:
        - Timeseries
      summary: Standard Index Coordinates
      description: >-
        Generates a standardized-index (e.g. SPI/SPEI) time series over point
        coordinates.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/NativeCoordinates'
      responses:
        '200':
          description: Standard index time series.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /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
  /raster/mapid/values:
    get:
      operationId: rasterMapidValues
      tags:
        - Raster
      summary: Mapid Values
      description: >-
        Returns an Earth Engine map ID and tile URL template for the raw values of
        a dataset variable over a date range, for client-side tile rendering.
      parameters:
        - $ref: '#/components/parameters/Dataset'
        - $ref: '#/components/parameters/Variable'
        - name: temporal_statistic
          in: query
          required: false
          schema:
            type: string
          description: Temporal reducer applied across the date range (e.g. mean, total).
        - $ref: '#/components/parameters/StartDate'
        - $ref: '#/components/parameters/EndDate'
        - name: bounding_box
          in: query
          required: false
          schema:
            type: string
            nullable: true
          description: Optional bounding box to constrain the rendered region.
        - name: colormap_min_max
          in: query
          required: false
          schema:
            type: string
            nullable: true
          description: Min,max values for the color map.
        - name: colormap_palette
          in: query
          required: false
          schema:
            type: string
            nullable: true
          description: Comma-separated hex colors for the color map palette.
      responses:
        '200':
          description: Map ID and tile URL template.
          content:
            application/json:
              schema:
                type: object
  /raster/export/values:
    post:
      operationId: rasterExportValues
      tags:
        - Raster
      summary: Export Values
      description: >-
        Queues an asynchronous raster export of the raw values of a dataset variable
        over a date range and region. Track progress via the export task endpoints.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Export task accepted.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /raster/export/task_update:
    get:
      operationId: rasterExportTaskUpdate
      tags:
        - Raster
      summary: Export Task Update
      description: Returns the status of a queued raster export task.
      parameters:
        - name: task_id
          in: query
          required: false
          schema:
            type: string
          description: Identifier of the export task to check.
      responses:
        '200':
          description: Task status.
          content:
            application/json:
              schema:
                type: object
  /raster/export/task_queue:
    get:
      operationId: rasterExportTaskQueue
      tags:
        - Raster
      summary: Export Task Queue
      description: Returns the authenticated user's queued raster export tasks.
      responses:
        '200':
          description: Task queue.
          content:
            application/json:
              schema:
                type: object
  /reports/drought/coordinates:
    post:
      operationId: reportsDroughtCoordinates
      tags:
        - Reports
      summary: Drought Coordinates
      description: Produces a pre-built drought report over point coordinates.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Drought report.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /reports/vegetation_production/coordinates:
    post:
      operationId: reportsVegetationProductionCoordinates
      tags:
        - Reports
      summary: Vegetation Production Coordinates
      description: Produces a pre-built vegetation production report over point coordinates.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Vegetation production report.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
  /reports/site_characterization/coordinates:
    post:
      operationId: reportsSiteCharacterizationCoordinates
      tags:
        - Reports
      summary: Site Characterization Coordinates
      description: Produces a pre-built site characterization report over point coordinates.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: Site characterization report.
          content:
            application/json:
              schema:
                type: object
        '422':
          $ref: '#/components/responses/ValidationError'
components:
  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.
  parameters:
    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.
    Dataset:
      name: dataset
      in: query
      required: false
      schema:
        type: string
        default: GRIDMET
      description: Dataset name (e.g. GRIDMET, ERA5, MODIS, CHIRPS).
    Variable:
      name: variable
      in: query
      required: false
      schema:
        type: string
        default: tmmn, tmmx
      description: Comma-separated variable name(s).
    StartDate:
      name: start_date
      in: query
      required: false
      schema:
        type: string
      description: Start date (YYYY-MM-DD).
    EndDate:
      name: end_date
      in: query
      required: false
      schema:
        type: string
      description: End date (YYYY-MM-DD).
    SimplifyGeometry:
      name: simplify_geometry
      in: query
      required: false
      schema:
        type: string
        nullable: true
      description: maxError in meters for geometry simplification.
    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.
  responses:
    ValidationError:
      description: Validation error.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/HTTPValidationError'
  schemas:
    NativeCoordinates:
      type: object
      properties:
        coordinates:
          type: string
          title: Coordinates
          description: Point or polygon coordinates as a JSON-encoded array.
          default: '[[-121.61,38.78]]'
        simplify_geometry:
          type: integer
          nullable: true
          title: Simplify Geometry
          description: maxError in meters for ee.Feature.simplify.
        buffer:
          type: integer
          nullable: true
          title: Buffer
          description: Buffer in meters.
        area_reducer:
          type: string
          title: Area Reducer
          default: mean
        dataset:
          type: string
          title: Dataset
          default: GRIDMET
        variable:
          type: string
          title: Variable
          default: tmmn, tmmx
        compute_trends:
          type: string
          nullable: true
          title: Compute Trends
          description: 'Comma-separated trends to compute. Options: polyfit, sens_slope.'
          default: ''
        start_date:
          type: string
          nullable: true
          title: Start Date
        end_date:
          type: string
          nullable: true
          title: End Date
    NativeFeatureCollection:
      type: object
      properties:
        feature_collection_id:
          type: string
          nullable: true
          title: Feature Collection Id
          description: Earth Engine feature collection asset ID.
        dataset:
          type: string
          title: Dataset
          default: GRIDMET
        variable:
          type: string
          title: Variable
          default: tmmn, tmmx
        area_reducer:
          type: string
          title: Area Reducer
          default: mean
        start_date:
          type: string
          nullable: true
          title: Start Date
        end_date:
          type: string
          nullable: true
          title: End Date
    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'