generated: '2026-07-27'
method: searched
source: >-
  npm registry search, PyPI JSON API, RubyGems API, Maven Central, GitHub org
  listings (github.com/hydroottawa and github.com/GreenButtonAlliance)
summary: >-
  Hydro Ottawa publishes NO first-party client libraries in any public package
  registry, and its GitHub organization (github.com/hydroottawa, created 2015)
  returns an empty repository list from the GitHub API. That is consistent with the
  rest of its posture: a mandated Green Button Connect My Data surface whose base
  URI, reference and credentials are all handed out only after a private onboarding
  process. No `SDKs` pointer is wired in apis.yml because there is no first-party SDK
  to point at.
packages: []
first_party_found: false
searched_registries:
- registry: npm
  query: hydro ottawa / green button espi
  first_party_hits: 0
- registry: pypi
  query: hydro-ottawa, greenbutton, greenbutton-python
  first_party_hits: 0
  note: both greenbutton and greenbutton-python return HTTP 404 on the PyPI JSON API
- registry: rubygems
  query: greenbutton
  first_party_hits: 0
- registry: maven-central
  query: espi
  first_party_hits: 0
- registry: nuget
  first_party_hits: 0
- registry: pkg.go.dev
  first_party_hits: 0
- registry: packagist
  first_party_hits: 0
- registry: crates.io
  first_party_hits: 0
- registry: github
  query: github.com/hydroottawa
  first_party_hits: 0
  note: organization exists since 2015; GitHub API /orgs/hydroottawa/repos returns an empty array
ecosystem:
  note: >-
    These are NOT Hydro Ottawa libraries and are recorded as ecosystem context only.
    They implement the NAESB REQ.21 ESPI / Green Button family that Hydro Ottawa's
    mandated Connect My Data surface belongs to. official is false for every entry
    because none of them is published by Hydro Ottawa. A developer integrating with
    Hydro Ottawa would still need connection details Hydro Ottawa does not publish.
  libraries:
  - language: java
    name: OpenESPI-Common-java
    publisher: Green Button Alliance
    url: https://github.com/GreenButtonAlliance/OpenESPI-Common-java
    description: Common library for Green Button Third Party and Data Custodian OpenESPI applications
    official: false
  - language: java
    name: OpenESPI-ThirdParty-java
    publisher: Green Button Alliance
    url: https://github.com/GreenButtonAlliance/OpenESPI-ThirdParty-java
    description: Spring Framework implementation of a Green Button Third Party OpenESPI application
    official: false
  - language: java
    name: OpenESPI-DataCustodian-java
    publisher: Green Button Alliance
    url: https://github.com/GreenButtonAlliance/OpenESPI-DataCustodian-java
    description: Spring Framework implementation of a Green Button Data Custodian OpenESPI application
    official: false
  - language: ruby
    name: OpenESPI-ThirdParty-ruby
    publisher: Green Button Alliance
    url: https://github.com/GreenButtonAlliance/OpenESPI-ThirdParty-ruby
    description: A Third Party library for Ruby programmers
    official: false
  - language: ruby
    registry: rubygems
    name: greenbutton
    url: https://rubygems.org/gems/greenbutton
    install: gem install greenbutton
    description: Parser that creates a Ruby object from a Green Button data file
    publisher: third-party (cew821)
    official: false