openapi: 3.2.0
info:
  title: SCE DRPEP ArcGIS REST Services Query API
  version: '11.1'
  summary: Anonymous, key-free Esri ArcGIS REST interface behind Southern California Edison's Distribution Resources Plan External Portal (DRPEP).
  description: 'Machine-readable description of the anonymous grid-data API that Southern California Edison serves at `drpep.sce.com`. SCE publishes **no** OpenAPI, no developer portal, and no written API reference for this surface; this document was generated by API Evangelist from live, unauthenticated probes of the service itself (ArcGIS Enterprise 11.1 REST, `f=json`) on 2026-07-27 and from the service, layer, and field descriptors saved verbatim under `arcgis/` in this repository. Every path, parameter, and example below was observed answering anonymously with HTTP 200 - nothing here is aspirational.


    The catalog exposes 15 hosted FeatureServers covering 47 feature layers and 11 tables: Integration Capacity Analysis (ICA) circuit segments and their generation/load constraint layers, distribution circuits, substations, the Distribution Deferral Opportunity Report (DDOR), the Grid Needs Assessment (GNA), Locational Net Benefit Analysis (LNBA), Public Safety Power Shutoff (PSPS) boundaries, CPUC fire-threat tiers, transmission projects, available-load and subtransmission heat maps, and load-growth penetration. The ICA circuit-segment layer alone answers 676,467 features.


    Read-only: every hosted service advertises `capabilities: Query` (DRP_Transmission_Projects also allows `Extract`). There is no write surface, no API key, and no rate-limit header. The sibling `Utilities` folder on the same server is NOT open - it returns `{"error":{"code":499,"message":"Token Required"}}`.


    This spec does not cover SCE Green Button Connect My Data. That interface is real and mandated by CPUC tariff Rule 26, but SCE discloses no base URI, endpoint, or scope publicly; see `authentication/` and the repository review for what is actually known.'
  termsOfService: https://www.sce.com/terms-conditions
  contact:
    name: API Evangelist (generator of this description, not the API operator)
    url: https://apievangelist.com
  x-generated-by: api-evangelist enrichment pipeline
  x-generated-on: '2026-07-27'
  x-provenance: api-evangelist-generated from live anonymous probes; NOT published by Southern California Edison
  x-source-probes:
  - https://drpep.sce.com/arcgis_server/rest/info?f=json
  - https://drpep.sce.com/arcgis_server/rest/services?f=json
  - https://drpep.sce.com/arcgis_server/rest/services/Hosted?f=json
  - https://drpep.sce.com/arcgis_server/rest/services/Hosted/ICA_Layer/FeatureServer?f=json
  - https://drpep.sce.com/arcgis_server/rest/services/Hosted/ICA_Layer/FeatureServer/0?f=json
  - https://drpep.sce.com/arcgis_server/rest/services/Hosted/ICA_Layer/FeatureServer/0/query?where=1%3D1&returnCountOnly=true&f=json
servers:
- url: https://drpep.sce.com
  description: SCE Distribution Resources Plan External Portal (production, anonymous)
tags:
- name: Query
  description: Attribute and spatial queries against a feature layer or table.
paths:
  /arcgis_server/rest/services/Hosted/{serviceName}/FeatureServer/{layerId}/query:
    get:
      operationId: queryFeatureLayer
      tags:
      - Query
      summary: Query features from a layer or table
      description: 'The workhorse operation. Runs a SQL-92 attribute filter and/or a spatial filter against one layer and returns matching features as Esri JSON (`f=json`) or GeoJSON (`f=geojson`, verified working). Paging is offset-based via `resultOffset` + `resultRecordCount`; when a response is truncated the body carries `exceededTransferLimit: true` and the caller must page. Errors are returned with HTTP 200 and an `error` envelope, not an HTTP error status.'
      parameters:
      - name: serviceName
        in: path
        required: true
        description: Name of a hosted feature service, as returned by `listHostedServices`.
        schema:
          type: string
          enum:
          - AVL_LOAD_CAP_TOGGLE
          - AVL_LOAD_HEAT_MAP_TOGGLE
          - DDOR_Layer
          - DRP_PSPS_Layer
          - DRP_ScreenL_08202021
          - DRP_Transmission_Projects
          - Distribution_circuits
          - Firemap
          - GNA_Layer
          - ICA_Layer
          - ICA_Tables
          - LNBA_Layer
          - LOAD_GROWTH_PEN_HTMAP
          - MGEP_AVL_LOAD_HEAT_MAP
          - SUBTRANS_HEATMAP
        example: ICA_Layer
      - name: layerId
        in: path
        required: true
        description: Zero-based id of a layer or table inside the feature service, as returned by `getFeatureService`. See `x-drpep-inventory` in this document for the full 58-entry layer/table map.
        schema:
          type: integer
          minimum: 0
        example: 0
      - name: where
        in: query
        required: false
        description: SQL-92 WHERE clause applied to the layer attributes. Use `1=1` to select everything. A malformed clause returns HTTP 200 with an ArcGIS error envelope (code 500, 'Syntax error').
        schema:
          type: string
          default: 1=1
        example: circuit_name = 'Acapulco'
      - name: objectIds
        in: query
        required: false
        description: Comma-separated list of ObjectIDs to fetch instead of a where clause.
        schema:
          type: string
      - name: geometry
        in: query
        required: false
        description: Geometry used to spatially filter the layer, in the format implied by geometryType (e.g. an envelope `xmin,ymin,xmax,ymax`).
        schema:
          type: string
      - name: geometryType
        in: query
        required: false
        description: Type of the geometry filter.
        schema:
          type: string
          enum:
          - esriGeometryPoint
          - esriGeometryMultipoint
          - esriGeometryPolyline
          - esriGeometryPolygon
          - esriGeometryEnvelope
      - name: spatialRel
        in: query
        required: false
        description: Spatial relationship applied between the input geometry and the layer geometry.
        schema:
          type: string
          enum:
          - esriSpatialRelIntersects
          - esriSpatialRelContains
          - esriSpatialRelCrosses
          - esriSpatialRelWithin
          - esriSpatialRelTouches
          - esriSpatialRelOverlaps
          - esriSpatialRelEnvelopeIntersects
          default: esriSpatialRelIntersects
      - name: inSR
        in: query
        required: false
        description: Spatial reference of the input geometry (WKID).
        schema:
          type: string
        example: '4326'
      - name: outSR
        in: query
        required: false
        description: Spatial reference the returned geometry is projected into (WKID).
        schema:
          type: string
        example: '4326'
      - name: outFields
        in: query
        required: false
        description: Comma-separated attribute list to return, or `*` for all. Field names come from the layer descriptor.
        schema:
          type: string
          default: '*'
        example: circuit_name,ica_overall_pv
      - name: returnGeometry
        in: query
        required: false
        description: Whether to include geometry with each feature. Set false for attribute-only pulls.
        schema:
          type: boolean
          default: true
      - name: returnCountOnly
        in: query
        required: false
        description: 'Return only the matching feature count. Verified: `where=1=1&returnCountOnly=true` on ICA - Circuit Segments returned 676,467.'
        schema:
          type: boolean
          default: false
      - name: returnIdsOnly
        in: query
        required: false
        description: Return only the matching ObjectIDs - the standard way to page a layer larger than maxRecordCount.
        schema:
          type: boolean
          default: false
      - name: orderByFields
        in: query
        required: false
        description: Comma-separated ORDER BY expression. Supported (supportsOrderBy is true on these layers).
        schema:
          type: string
      - name: groupByFieldsForStatistics
        in: query
        required: false
        description: Fields to group by when computing outStatistics.
        schema:
          type: string
      - name: outStatistics
        in: query
        required: false
        description: JSON array of statistic definitions (count/sum/min/max/avg/stddev). Supported (supportsStatistics is true).
        schema:
          type: string
      - name: resultOffset
        in: query
        required: false
        description: Zero-based offset for pagination. Supported (supportsPagination is true).
        schema:
          type: integer
          minimum: 0
      - name: resultRecordCount
        in: query
        required: false
        description: Maximum number of features to return in this page; capped by the layer maxRecordCount (2,000 or 5,000 on these services).
        schema:
          type: integer
          minimum: 1
      - name: returnDistinctValues
        in: query
        required: false
        description: Return distinct values for the requested outFields (supportsDistinct is true).
        schema:
          type: boolean
          default: false
      - name: resultType
        in: query
        required: false
        description: Query result hint.
        schema:
          type: string
          enum:
          - none
          - standard
          - tile
      - name: f
        in: query
        required: false
        description: Response format. `json` (Esri JSON), `pjson` (pretty JSON), `geojson` (GeoJSON - verified supported on hosted feature layers), or `html` (the default ArcGIS REST Services Directory page). Always send `f=json` for machine use; without it the service returns HTML.
        schema:
          type: string
          enum:
          - json
          - pjson
          - geojson
          - html
          default: html
        example: json
      responses:
        '200':
          description: A feature set, a count, an id list, or an ArcGIS error envelope - all with HTTP 200.
          content:
            application/json:
              schema:
                oneOf:
                - $ref: '#/components/schemas/FeatureSet'
                - $ref: '#/components/schemas/CountResult'
                - $ref: '#/components/schemas/ErrorEnvelope'
              examples:
                count:
                  summary: returnCountOnly on ICA - Circuit Segments (verified 2026-07-27)
                  value:
                    count: 676467
                featureSet:
                  summary: One ICA circuit segment, attributes only (verified 2026-07-27)
                  value:
                    features:
                    - attributes:
                        circuit_name: Acapulco
                        ica_overall_pv: 0
                    exceededTransferLimit: true
                    objectIdFieldName: objectid
                    fields:
                    - name: circuit_name
                      alias: Circuit Name
                      type: esriFieldTypeString
                      length: 50
                    - name: ica_overall_pv
                      alias: Photovoltaic Static Grid
                      type: esriFieldTypeDouble
                error:
                  summary: Malformed where clause (verified 2026-07-27)
                  value:
                    error:
                      code: 500
                      message: Syntax error [].
                      details: []
            application/geo+json:
              schema:
                type: object
                description: GeoJSON FeatureCollection, returned when f=geojson.
components:
  schemas:
    ErrorEnvelope:
      type: object
      description: ArcGIS error envelope. Returned with HTTP 200; the transport status is not the error signal.
      properties:
        error:
          type: object
          properties:
            code:
              type: integer
              examples:
              - 400
              - 404
              - 498
              - 499
              - 500
            message:
              type: string
            messageCode:
              type: string
            details:
              type: array
              items:
                type: string
    Field:
      type: object
      properties:
        name:
          type: string
        alias:
          type: string
        type:
          type: string
          description: Esri field type, e.g. esriFieldTypeString.
        length:
          type: integer
    FeatureSet:
      type: object
      description: Esri JSON feature set returned by a query.
      properties:
        objectIdFieldName:
          type: string
        globalIdFieldName:
          type: string
        geometryType:
          type: string
        spatialReference:
          type: object
        fields:
          type: array
          items:
            $ref: '#/components/schemas/Field'
        exceededTransferLimit:
          type: boolean
          description: True when the result was truncated at maxRecordCount - page with resultOffset.
        features:
          type: array
          items:
            type: object
            properties:
              attributes:
                type: object
              geometry:
                type: object
    CountResult:
      type: object
      properties:
        count:
          type: integer
externalDocs:
  description: DRPEP portal (Esri Experience Builder app over these services)
  url: https://drpep.sce.com/drpep/
x-drpep-inventory:
- service: AVL_LOAD_CAP_TOGGLE
  id: 0
  name: AVL_LOAD_CAP_FULL_SUBMITTAL
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 128
- service: AVL_LOAD_CAP_TOGGLE
  id: 1
  name: AVL_LOAD_CAP_FULL_AND_PARTIAL_SUBMITTAL
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 128
- service: AVL_LOAD_HEAT_MAP_TOGGLE
  id: 0
  name: GRID_RANK_AGGR_FULL
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 6
- service: AVL_LOAD_HEAT_MAP_TOGGLE
  id: 1
  name: GRID_RANK_AGGR_FULL_PARTIAL
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 6
- service: DDOR_Layer
  id: 0
  name: DDOR Substations
  kind: layer
  geometryType: esriGeometryPoint
  fieldCount: 33
- service: DDOR_Layer
  id: 1
  name: DDOR Subtransmission
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 33
- service: DDOR_Layer
  id: 2
  name: DDOR - Circuits
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 36
- service: DDOR_Layer
  id: 3
  name: DDOR FGDB DATE TIME
  kind: table
  geometryType: null
  fieldCount: 3
- service: DRP_PSPS_Layer
  id: 0
  name: PSPS_Subtransmission
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 14
- service: DRP_PSPS_Layer
  id: 1
  name: PSPS_Circuit
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 16
- service: DRP_ScreenL_08202021
  id: 0
  name: Sheet1
  kind: table
  geometryType: null
  fieldCount: 3
- service: DRP_Transmission_Projects
  id: 0
  name: CAISO_APPROVED_POLYGON
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 16
- service: DRP_Transmission_Projects
  id: 1
  name: UTILITY_APPROVED_POLYGON
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 16
- service: DRP_Transmission_Projects
  id: 2
  name: CPUC_APPROVED_POLYGON
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 16
- service: Distribution_circuits
  id: 0
  name: Distribution Circuits
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 11
- service: Firemap
  id: 0
  name: Tree_Mortality___Tier_1
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 10
- service: Firemap
  id: 1
  name: CPUC_Fire_Threat_Areas____Tier_2___Elevated
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 10
- service: Firemap
  id: 2
  name: CPUC_Fire_Threat_Areas____Tier_3___Extreme
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 10
- service: GNA_Layer
  id: 0
  name: GNA Substations
  kind: layer
  geometryType: esriGeometryPoint
  fieldCount: 31
- service: GNA_Layer
  id: 1
  name: GNA Subtransmission
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 25
- service: GNA_Layer
  id: 2
  name: GNA - Circuits
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 39
- service: GNA_Layer
  id: 3
  name: Circuit Level Planning Assumptions
  kind: table
  geometryType: null
  fieldCount: 23
- service: GNA_Layer
  id: 4
  name: GNA FGDB DATE TIME
  kind: table
  geometryType: null
  fieldCount: 3
- service: GNA_Layer
  id: 5
  name: Substation Level Planning Assumptions
  kind: table
  geometryType: null
  fieldCount: 20
- service: ICA_Layer
  id: 0
  name: ICA - Circuit Segments
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 29
- service: ICA_Layer
  id: 1
  name: ICA - Circuit Segments, Non-3 Phase
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 16
- service: ICA_Layer
  id: 2
  name: ICA - Generation Op Flex
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 3
  name: ICA - Generation Protection
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 4
  name: ICA - Generation Steady State Voltage
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 5
  name: ICA - Generation Thermal
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 6
  name: ICA - Generation Voltage Variation
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 7
  name: ICA - Load Steady State Voltage
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 8
  name: ICA - Load Thermal
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 9
  name: ICA - Load Voltage Variation
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 10
  name: ICA - Solar Op Flex
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 11
  name: ICA - Solar PV Static Grid
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 12
  name: ICA - Unavailable Circuit Segments
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 8
- service: ICA_Layer
  id: 13
  name: ICA - Uniform Generation Op Flex
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 14
  name: ICA - Uniform Generation Static Grid
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 15
  name: ICA - Uniform Load Static Grid
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 17
- service: ICA_Layer
  id: 16
  name: Substations
  kind: layer
  geometryType: esriGeometryPoint
  fieldCount: 14
- service: ICA_Layer
  id: 17
  name: RAM - Circuits
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 16
- service: ICA_Layer
  id: 18
  name: Transmission Circuits
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 6
- service: ICA_Layer
  id: 19
  name: SCE Service Territory
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 9
- service: ICA_Tables
  id: 0
  name: DRPEP_FGDB_DATE_TIME
  kind: table
  geometryType: null
  fieldCount: 3
- service: ICA_Tables
  id: 1
  name: Historical Circuit Load Profile
  kind: table
  geometryType: null
  fieldCount: 12
- service: ICA_Tables
  id: 2
  name: Historical Substation Load Profile
  kind: table
  geometryType: null
  fieldCount: 9
- service: ICA_Tables
  id: 3
  name: ICA Single Consolidated Table
  kind: table
  geometryType: null
  fieldCount: 26
- service: ICA_Tables
  id: 4
  name: Forecasted Circuit Load Profile
  kind: table
  geometryType: null
  fieldCount: 12
- service: LNBA_Layer
  id: 0
  name: DER Growth Scenario, Planning
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 10
- service: LNBA_Layer
  id: 1
  name: LNBA Short-term, Planning
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 23
- service: LNBA_Layer
  id: 2
  name: LNBA Mid-term, Planning
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 23
- service: LNBA_Layer
  id: 3
  name: LNBA Long-term, Planning
  kind: layer
  geometryType: esriGeometryPolyline
  fieldCount: 23
- service: LNBA_Layer
  id: 4
  name: LNBA_FGDB_DATE_TIME
  kind: table
  geometryType: null
  fieldCount: 3
- service: LOAD_GROWTH_PEN_HTMAP
  id: 0
  name: GRID_RANK_AGGR
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 5
- service: MGEP_AVL_LOAD_HEAT_MAP
  id: 0
  name: GRID_RANK_AGGR_FULL
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 6
- service: MGEP_AVL_LOAD_HEAT_MAP
  id: 1
  name: GRID_RANK_AGGR_FULL_PARTIAL
  kind: layer
  geometryType: esriGeometryPolygon
  fieldCount: 6
- service: SUBTRANS_HEATMAP
  id: 0
  name: Subtrans_heatmap
  kind: layer
  geometryType: esriGeometryPoint
  fieldCount: 19