openapi: 3.2.0
info:
  title: Green Button API Documentation Application Information API
  description: Green Button API - ESPI 4.0
  version: 1.0.0
  contact:
    name: Green Button Alliance
    url: https://www.greenbuttonalliance.org
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
  x-provenance: 'Harvested verbatim by API Evangelist for the Hydro Ottawa provider profile. This document is authored and published by the Green Button Alliance, NOT by Hydro Ottawa. Hydro Ottawa publishes no first-party OpenAPI and does not publish its Green Button Connect My Data base URI. Note the version gap: this GBA document describes ESPI 4.0 and its servers[] point at the GBA sandbox, whereas Ontario O. Reg. 633/21 mandates NAESB REQ.21 ESPI v3.3. Nothing outside this x- block was altered.'
  x-source-url: https://raw.githubusercontent.com/GreenButtonAlliance/OpenAPI-Green-Button-Documentation/main/green-button-openapi.yaml
  x-source-repository: https://github.com/GreenButtonAlliance/OpenAPI-Green-Button-Documentation
  x-harvested:
    date: '2026-07-27'
    httpStatus: 200
    by: API Evangelist
    bytes: 20333
servers:
- url: https://sandbox.greenbuttonalliance.org:8443/DataCustodian
  description: GBA Green Button Sandbox
security:
- oauth2: []
tags:
- name: ApplicationInformation
  description: Application Information endpoints
paths:
  /espi/1_1/resource/ApplicationInformation:
    get:
      tags:
      - ApplicationInformation
      summary: Retrieve all Application Information [FB_33]
      operationId: findApplicationInformations
      parameters:
      - name: published-max
        in: query
        description: Maximum publication date (RFC 3339 instant)
        schema:
          type: string
          format: date
      - name: published-min
        in: query
        description: Minimum publication date (RFC 3339 instant)
        schema:
          type: string
          format: date
      - name: updated-max
        in: query
        description: Maximum update date (RFC 3339 instant)
        schema:
          type: string
          format: date
      - name: updated-min
        in: query
        description: Minimum update date (RFC 3339 instant)
        schema:
          type: string
          format: date
      - name: max-results
        in: query
        description: Maximum number of results to return
        schema:
          type: integer
          format: int64
      - name: start-index
        in: query
        description: Index of first result (1-indexed)
        schema:
          type: integer
          format: int64
      - name: depth
        in: query
        description: Response depth control
        schema:
          type: integer
          format: int64
      responses:
        '200':
          description: OK
          content:
            application/atom+xml:
              schema:
                $ref: '#/components/schemas/AtomFeed'
        '202':
          description: Accepted
          content:
            application/atom+xml:
              schema:
                $ref: '#/components/schemas/AtomFeed'
        '400':
          description: Bad Request
        '403':
          description: Forbidden
  /espi/1_1/resource/ApplicationInformation/{applicationInformationId}:
    get:
      tags:
      - ApplicationInformation
      summary: Retrieve Application Information by Id [FB_3]
      operationId: getApplicationInformation
      parameters:
      - name: applicationInformationId
        in: path
        required: true
        description: Unique identifier for the ApplicationInformation resource
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/atom+xml:
              schema:
                $ref: '#/components/schemas/ApplicationInformation'
        '202':
          description: Accepted
          content:
            application/atom+xml:
              schema:
                $ref: '#/components/schemas/ApplicationInformation'
        '400':
          description: Bad Request
        '403':
          description: Forbidden
components:
  schemas:
    ApplicationInformation:
      type: object
      description: Contains information about a Third Party Application requesting access to DataCustodian services
      xml:
        name: ApplicationInformation
        namespace: http://naesb.org/espi
      properties:
        dataCustodianId:
          type: string
          description: Identifier for the Data Custodian
        dataCustodianApplicationStatus:
          type: integer
          description: Current status of the application (provided by Data Custodian)
        thirdPartyApplicationDescription:
          type: string
          description: Description of the Third Party Application
        thirdPartyApplicationStatus:
          type: integer
          description: Current status of the Third Party Application
        thirdPartyApplicationType:
          type: integer
          description: Type of application (1=Web, 2=Desktop, 3=Mobile, 4=Device)
        thirdPartyApplicationUse:
          type: integer
          description: Expected use of the application
        client_name:
          type: string
          description: Name of the application (OAuth client_name)
        client_id:
          type: string
          description: Identifier for the Third Party (OAuth client_id)
        client_secret:
          type: string
          description: Secret for the client (OAuth client_secret)
        redirect_uri:
          type: array
          items:
            type: string
          description: OAuth redirect URIs
        scope:
          type: array
          items:
            type: string
          description: OAuth scopes
        grant_types:
          type: array
          items:
            type: string
          description: Supported OAuth grant types
    AtomLink:
      type: object
      description: Atom link element (RFC 4287)
      xml:
        name: link
        namespace: http://www.w3.org/2005/Atom
      properties:
        href:
          type: string
          format: uri
          description: Link URI
        rel:
          type: string
          description: Link relationship type (e.g., 'self', 'up')
        type:
          type: string
          description: Media type (e.g., 'application/atom+xml')
    AtomEntry:
      type: object
      description: Atom feed entry (RFC 4287) containing ESPI resource
      xml:
        name: entry
        namespace: http://www.w3.org/2005/Atom
      properties:
        id:
          type: string
          format: uri
          description: Unique entry identifier
        title:
          type: string
          description: Entry title
        published:
          type: string
          format: date-time
          description: ISO 8601 publication timestamp
        updated:
          type: string
          format: date-time
          description: ISO 8601 last update timestamp
        link:
          type: array
          items:
            $ref: '#/components/schemas/AtomLink'
          description: Entry links (minimum 2 required per Atom spec)
        content:
          $ref: '#/components/schemas/AtomContent'
    AtomContent:
      type: object
      description: Atom content element containing ESPI resource (RFC 4287)
      xml:
        name: content
        namespace: http://www.w3.org/2005/Atom
      properties:
        type:
          type: string
          description: Content media type (typically 'application/xml')
    AtomFeed:
      type: object
      description: Atom Feed (RFC 4287) containing ESPI resources
      xml:
        name: feed
        namespace: http://www.w3.org/2005/Atom
      properties:
        id:
          type: string
          format: uri
          description: Feed identifier
        title:
          type: string
          description: Feed title
        updated:
          type: string
          format: date-time
          description: ISO 8601 timestamp of last feed update
        link:
          type: array
          items:
            $ref: '#/components/schemas/AtomLink'
          description: Feed links (minimum 1 required per Atom spec)
        entry:
          type: array
          items:
            $ref: '#/components/schemas/AtomEntry'
          description: Feed entries containing ESPI resources
  securitySchemes:
    oauth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://sandbox.greenbuttonalliance.org:8443/oauth/authorize
          tokenUrl: https://sandbox.greenbuttonalliance.org:8443/oauth/token
          scopes: {}
        clientCredentials:
          tokenUrl: https://sandbox.greenbuttonalliance.org:8443/oauth/token
          scopes: {}