openapi: 3.2.0
info:
  title: ISO New England Web Services API v1.1 Fifteenminuteconstraints API
  version: '1.1'
  description: RESTful interface to ISO New England energy and market data. This OpenAPI document was DERIVED by API Evangelist from ISO New England's own published, machine-generated Enunciate technical documentation at https://webservices.iso-ne.com/docs/v1.1/ and the two XML Schemas it publishes (ns0.xsd, ns1.xsd, saved verbatim under schemas/). ISO New England does not publish an OpenAPI definition; the only provider-published machine-readable description of the interface is a WADL at https://webservices.iso-ne.com/api/v1.1?_wadl&_type=xml, which sits behind the same HTTP Basic authentication as the API and returned HTTP 401 to anonymous probes. Every path, method, parameter, description, media type and schema in this document is copied from the provider's published sources; nothing was invented. Each operation carries x-evidence naming the exact documentation page it came from. All feeds are available in XML and JSON, selected by adding a .xml or .json extension to the request URL or by sending an Accept header of application/xml or application/json.
  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: fifteenminuteconstraints
  description: 5 path template(s) under /fifteenminuteconstraints in the published ISO New England Web Services API v1.1 documentation.
paths:
  /fifteenminuteconstraints/{Type}:
    get:
      operationId: getFifteenminuteconstraintsByType
      summary: Default resource
      description: Default resource. Redirects to Fifteen Minute Binding constraints(BCs).
      tags:
      - fifteenminuteconstraints
      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.fifteenminuteconstraints.Type.html
        harvested: '2026-07-27'
      x-xml-element: ServiceInfo
      parameters:
      - name: Type
        in: path
        required: true
        schema:
          type: string
  /fifteenminuteconstraints/{Type}/current:
    get:
      operationId: getFifteenminuteconstraintsByTypeCurrent
      summary: Get the current Fifteen Minute BC
      description: Get the current Fifteen Minute BC.
      tags:
      - fifteenminuteconstraints
      responses:
        '200':
          description: a FifteenMinBcsElement containing the current Fifteen Minute Binding constraints(BCs).
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/FifteenMinBcs'
            application/json:
              schema:
                $ref: '#/components/schemas/FifteenMinBcs'
        '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.fifteenminuteconstraints.Type.current.html
        harvested: '2026-07-27'
      x-xml-element: FifteenMinBcs
      parameters:
      - name: Type
        in: path
        required: true
        schema:
          type: string
  /fifteenminuteconstraints/{Type}/day/{day}:
    get:
      operationId: getFifteenminuteconstraintsByTypeDayByDay
      summary: Get an entire days Fifteen Minute BC Only the past [?] days are supported
      description: Get an entire days Fifteen Minute BC Only the past [?] days are supported.
      tags:
      - fifteenminuteconstraints
      responses:
        '200':
          description: a FifteenMinBcsElement containing the Fifteen Minute Binding constraints(BCs).
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/FifteenMinBcs'
            application/json:
              schema:
                $ref: '#/components/schemas/FifteenMinBcs'
        '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.fifteenminuteconstraints.Type.day.day.html
        harvested: '2026-07-27'
      x-xml-element: FifteenMinBcs
      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)
  /fifteenminuteconstraints/{Type}/info:
    get:
      operationId: getFifteenminuteconstraintsByTypeInfo
      summary: Get the Service Info for Fifteen Minute Binding constraints(BCs)
      description: Get the Service Info for Fifteen Minute Binding constraints(BCs).
      tags:
      - fifteenminuteconstraints
      responses:
        '200':
          description: the ServiceInfoElement for Fifteen Minute Binding Constraints.
          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.fifteenminuteconstraints.Type.info.html
        harvested: '2026-07-27'
      x-xml-element: ServiceInfo
      parameters:
      - name: Type
        in: path
        required: true
        schema:
          type: string
  /fifteenminuteconstraints/{Type}/month/{month}:
    get:
      operationId: getFifteenminuteconstraintsByTypeMonthByMonth
      summary: Get fifteen min binding constraints for a given month
      description: Get fifteen min binding constraints for a given month.
      tags:
      - fifteenminuteconstraints
      responses:
        '200':
          description: a FifteenMinBcsElement containing the fifteen minute binding constraints.
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/FifteenMinBcs'
            application/json:
              schema:
                $ref: '#/components/schemas/FifteenMinBcs'
        '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.fifteenminuteconstraints.Type.month.month.html
        harvested: '2026-07-27'
      x-xml-element: FifteenMinBcs
      parameters:
      - name: Type
        in: path
        required: true
        schema:
          type: string
      - name: month
        in: path
        required: true
        schema:
          type: string
        description: The month to retrieve data for (YYYYMM)
components:
  schemas:
    FifteenMinBc:
      type: object
      properties:
        Type:
          type: string
          enum:
          - PRELIM
          - FINAL
        BeginDate:
          type: string
          format: date-time
        ConstraintName:
          type: string
        MarginalValueInterval:
          type: string
          format: date-time
        MarginalValue:
          type: number
        HourEnd:
          type: string
      required:
      - BeginDate
      - ConstraintName
      - MarginalValueInterval
      - HourEnd
      x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_FifteenMinBc
    FifteenMinBcs:
      type: object
      properties:
        FifteenMinBc:
          type: array
          items:
            $ref: '#/components/schemas/FifteenMinBc'
      x-xsd-source: schemas/iso-new-england-web-services-ns0.xsd#type_FifteenMinBcs
    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
  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