ISO New England Fiveminutercp API

openapi: 3.2.0
info:
  title: ISO New England Web Services API v1.1 Fiveminutercp API
  version: '1.1'
  description: RESTful interface to ISO New England energy and market data.
  contact:
    name: ISO New England Ask ISO
    url: https://askiso.iso-ne.com/s/
  x-provenance:
    method: derived
    derived_by: API Evangelist enrichment pipeline
    derived_on: '2026-07-27'
    sources:
    - https://webservices.iso-ne.com/docs/v1.1/
    - https://webservices.iso-ne.com/docs/v1.1/ns0.xsd
    - https://webservices.iso-ne.com/docs/v1.1/ns1.xsd
    - https://www.iso-ne.com/participate/support/web-services-data
    not_provider_published: true
    note: Derived from provider-published HTML documentation and XSDs. Not an ISO New England artifact.
servers:
- url: https://webservices.iso-ne.com/api/v1.1
  description: Production base path (HTTP Basic over SSL)
security:
- basicAuth: []
tags:
- name: fiveminutercp
  description: 7 path template(s) under /fiveminutercp in the published ISO New England Web Services API v1.1 documentation.
paths:
  /fiveminutercp:
    get:
      operationId: getFiveminutercp
      summary: Default resource
      description: Default resource. Redirects to Five Minute Five Minute Regulation Clearing Prices(RCPs). This endpoint has been deprecated.
      tags:
      - fiveminutercp
      responses:
        '200':
          description: Successful response.
          content:
            application/xml:
              schema:
                description: Response payload is not described in the published documentation.
            application/json:
              schema:
                description: Response payload is not described in the published documentation.
        '401':
          description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27.
      x-evidence:
        source: https://webservices.iso-ne.com/docs/v1.1/rest.fiveminutercp.html
        harvested: '2026-07-27'
  /fiveminutercp/current:
    get:
      operationId: getFiveminutercpCurrent
      summary: Get the current Five Minute Rcp
      description: Get the current Five Minute Rcp. This endpoint has been deprecated.
      tags:
      - fiveminutercp
      responses:
        '200':
          description: a FiveMinRcpsElement containing the current Five Minute Regulation Clearing Prices(RCPs).
          content:
            application/xml:
              schema:
                description: Response payload is not described in the published documentation.
            application/json:
              schema:
                description: Response payload is not described in the published documentation.
        '401':
          description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27.
      x-evidence:
        source: https://webservices.iso-ne.com/docs/v1.1/rest.fiveminutercp.current.html
        harvested: '2026-07-27'
  /fiveminutercp/day/{day}:
    get:
      operationId: getFiveminutercpDayByDay
      summary: Get an entire days Five Minute RCP Only the past [?] days are supported
      description: Get an entire days Five Minute RCP Only the past [?] days are supported. This endpoint has been deprecated.
      tags:
      - fiveminutercp
      responses:
        '200':
          description: a FiveMinRcpsElement containing the Five Minute Regulation Clearing Prices(RCPs).
          content:
            application/xml:
              schema:
                description: Response payload is not described in the published documentation.
            application/json:
              schema:
                description: Response payload is not described in the published documentation.
        '401':
          description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27.
      x-evidence:
        source: https://webservices.iso-ne.com/docs/v1.1/rest.fiveminutercp.day.day.html
        harvested: '2026-07-27'
      parameters:
      - name: day
        in: path
        required: true
        schema:
          type: string
        description: The day to retrieve data for (YYYYMMDD)
  /fiveminutercp/info:
    get:
      operationId: getFiveminutercpInfo
      summary: Get the Service Info for Five Minute Five Minute Regulation Clearing…
      description: Get the Service Info for Five Minute Five Minute Regulation Clearing Prices(RCPs). This endpoint has been deprecated.
      tags:
      - fiveminutercp
      responses:
        '200':
          description: the ServiceInfoElement for Five Minute Reserve Price.
          content:
            application/xml:
              schema:
                description: Response payload is not described in the published documentation.
            application/json:
              schema:
                description: Response payload is not described in the published documentation.
        '401':
          description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27.
      x-evidence:
        source: https://webservices.iso-ne.com/docs/v1.1/rest.fiveminutercp.info.html
        harvested: '2026-07-27'
  /fiveminutercp/{Type}/current:
    get:
      operationId: getFiveminutercpByTypeCurrent
      summary: Get the current Five Minute Rcp
      description: Get the current Five Minute Rcp.
      tags:
      - fiveminutercp
      responses:
        '200':
          description: a FiveMinRcpsElement containing the current Five Minute Regulation Clearing Prices(RCPs).
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/FiveMinRcps'
            application/json:
              schema:
                $ref: '#/components/schemas/FiveMinRcps'
        '401':
          description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27.
      x-evidence:
        source: https://webservices.iso-ne.com/docs/v1.1/rest.fiveminutercp.Type.current.html
        harvested: '2026-07-27'
      x-xml-element: FiveMinRcps
      parameters:
      - name: Type
        in: path
        required: true
        schema:
          type: string
  /fiveminutercp/{Type}/day/{day}:
    get:
      operationId: getFiveminutercpByTypeDayByDay
      summary: Get an entire days Five Minute RCP Only the past [?] days are supported
      description: Get an entire days Five Minute RCP Only the past [?] days are supported.
      tags:
      - fiveminutercp
      responses:
        '200':
          description: a FiveMinRcpsElement containing the Five Minute Regulation Clearing Prices(RCPs).
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/FiveMinRcps'
            application/json:
              schema:
                $ref: '#/components/schemas/FiveMinRcps'
        '401':
          description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27.
      x-evidence:
        source: https://webservices.iso-ne.com/docs/v1.1/rest.fiveminutercp.Type.day.day.html
        harvested: '2026-07-27'
      x-xml-element: FiveMinRcps
      parameters:
      - name: Type
        in: path
        required: true
        schema:
          type: string
      - name: day
        in: path
        required: true
        schema:
          type: string
        description: The day to retrieve data for (YYYYMMDD)
  /fiveminutercp/{Type}/info:
    get:
      operationId: getFiveminutercpByTypeInfo
      summary: GET /fiveminutercp/{Type}/info
      description: (no documentation provided)
      tags:
      - fiveminutercp
      responses:
        '200':
          description: Successful response.
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/ServiceInfo'
            application/json:
              schema:
                $ref: '#/components/schemas/ServiceInfo'
        '401':
          description: Unauthorized - HTTP Basic credentials from an ISO Express account are required. Verified by anonymous probe on 2026-07-27.
      x-evidence:
        source: https://webservices.iso-ne.com/docs/v1.1/rest.fiveminutercp.Type.info.html
        harvested: '2026-07-27'
      x-xml-element: ServiceInfo
      parameters:
      - name: Type
        in: path
        required: true
        schema:
          type: string
components:
  schemas:
    Rcp:
      type: object
      properties:
        BeginDate:
          type: string
          format: date-time
        RegClearingPrice:
          type: number
        RegServiceClearingPrice:
          type: number
        RegCapacityClearingPrice:
          type: number
        HourEnd:
          type: string
      required:
      - BeginDate
      x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_Rcp
    FiveMinRcp:
      $ref: '#/components/schemas/Rcp'
      x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_FiveMinRcp
    ServiceInfo:
      type: object
      properties:
        LatestBeginDate:
          type: string
          format: date-time
        CreationDate:
          type: string
          format: date-time
      required:
      - LatestBeginDate
      - CreationDate
      x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_ServiceInfo
    FiveMinRcps:
      type: object
      properties:
        FiveMinRcp:
          type: array
          items:
            $ref: '#/components/schemas/FiveMinRcp'
      x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_FiveMinRcps
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Authentication over SSL. Credentials come from a free, self-serve ISO Express account; ISO New England states that ISO Express account holders are automatically granted access to the public data feeds. See https://www.iso-ne.com/participate/applications-status-changes/access-software-systems