Singularity Events API

openapi: 3.2.0
info:
  title: Singularity Grid Carbon Events API
  description: The Singularity Grid Carbon API provides hourly, location-specific electricity grid emissions intelligence - generated, consumed, and marginal carbon intensity, fuel mix, generation events, interchange (power flow), and emissions forecasts - across ISOs and balancing authorities in the U.S.
  termsOfService: https://singularity.energy
  contact:
    name: Singularity Support
    email: support@singularity.energy
  version: '1.0'
servers:
- url: https://api.singularity.energy
  description: Singularity Grid Carbon API
security:
- ApiKeyAuth: []
tags:
- name: Events
paths:
  /v1/region_events/search:
    get:
      operationId: searchRegionEvents
      tags:
      - Events
      summary: Search region events over a time window
      description: Search region events for a region (or postal code) and event type over a time period, with optional filtering and pagination. Event types include carbon_intensity, generated_fuel_mix, marginal_fuel_mix, and consumed_fuel_mix.
      parameters:
      - name: region
        in: query
        required: false
        description: Region or balancing authority abbreviation (e.g. ISONE, NYISO, PJM, IESO, CAISO, MISO, SPP, BPA). Mutually exclusive with postal_code.
        schema:
          type: string
      - name: postal_code
        in: query
        required: false
        description: Postal code to resolve to a region (supported for ISONE, NYISO, PJM). Mutually exclusive with region.
        schema:
          type: string
      - name: event_type
        in: query
        required: true
        description: Event type to retrieve.
        schema:
          type: string
          enum:
          - carbon_intensity
          - generated_fuel_mix
          - marginal_fuel_mix
          - consumed_fuel_mix
      - name: start
        in: query
        required: true
        description: ISO-8601 start of the time window.
        schema:
          type: string
          format: date-time
      - name: end
        in: query
        required: true
        description: ISO-8601 end of the time window.
        schema:
          type: string
          format: date-time
      - name: filter
        in: query
        required: false
        description: Optional filter expression.
        schema:
          type: string
      - name: page
        in: query
        required: false
        schema:
          type: integer
      - name: per_page
        in: query
        required: false
        schema:
          type: integer
      responses:
        '200':
          description: A paginated list of region events.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RegionEventList'
  /v1/region_events/{region_or_postal_code}/latest:
    get:
      operationId: latestRegionEvents
      tags:
      - Events
      summary: Get latest events for a region or postal code
      description: Retrieve the most recent events for a region or postal code. Supports the carbon_intensity and generated_fuel_mix event types and an optional emission factor source.
      parameters:
      - name: region_or_postal_code
        in: path
        required: true
        description: Region/balancing-authority abbreviation or a postal code.
        schema:
          type: string
      - name: event_type
        in: query
        required: true
        schema:
          type: string
          enum:
          - carbon_intensity
          - generated_fuel_mix
      - name: emission_factor
        in: query
        required: false
        description: Optional emission factor source to apply.
        schema:
          type: string
      responses:
        '200':
          description: The latest event(s) for the region or postal code.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RegionEvent'
  /v1/region_events/{dedup_key}:
    get:
      operationId: findRegionEvent
      tags:
      - Events
      summary: Find a single region event by deduplication key
      parameters:
      - name: dedup_key
        in: path
        required: true
        description: Deduplication key uniquely identifying a region event.
        schema:
          type: string
      responses:
        '200':
          description: A single region event.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RegionEvent'
  /v1/region_events/bulk-find:
    post:
      operationId: findAllRegionEvents
      tags:
      - Events
      summary: Find multiple region events by deduplication keys
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                dedup_keys:
                  type: array
                  items:
                    type: string
              required:
              - dedup_keys
      responses:
        '200':
          description: The requested region events.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RegionEventList'
components:
  schemas:
    RegionEvent:
      type: object
      description: A region event record (e.g. carbon intensity, fuel mix, or interchange) at a point in time.
      properties:
        dedup_key:
          type: string
          description: Deduplication key uniquely identifying the event.
        region:
          type: string
        event_type:
          type: string
          enum:
          - carbon_intensity
          - generated_fuel_mix
          - marginal_fuel_mix
          - consumed_fuel_mix
          - interchange
        start_date:
          type: string
          format: date-time
        data:
          type: object
          description: Event payload (intensity value in lbs/MWh, fuel-mix breakdown, or interchange values), shape varies by event_type.
    RegionEventList:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/RegionEvent'
        meta:
          type: object
          description: Pagination metadata (page, per_page, totals).
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-Api-Key
      description: API key passed in the X-Api-Key request header. A User-Agent header is also required.