generated: '2026-08-13'
method: searched
source: https://developer.constantcontact.com/api_guide/sdks.html
provider: Constant Contact
providerId: constant-contact
description: >-
  First-party Constant Contact V3 API client libraries. All five are OpenAPI-Generator
  builds of the AppConnect V3 Swagger 2.0 contract, published from the github.com/constantcontact
  organization and listed on the provider's own SDK page. Every one was re-released in
  July 2026, so the SDK fleet tracks the current API rather than trailing it.
official_count: 5
community_count: 0
packages:
- name: ctct-api-client
  language: JavaScript/TypeScript
  registry: npm
  official: true
  version: 1.23.0
  published: '2026-07-16'
  install: npm install ctct-api-client
  registry_url: https://www.npmjs.com/package/ctct-api-client
  source: https://github.com/constantcontact/constant-contact-v3api-client-typescript
  license: BSD-3-Clause
  note: >-
    package.json declares author "Constant Contact" and the repository is in the
    constantcontact GitHub org. Generated by openapi-generator (axios transport).
- name: constant-contact-api-client
  language: Python
  registry: pypi
  official: true
  version: 1.5.0
  published: '2026-07-15'
  install: pip install constant-contact-api-client
  registry_url: https://pypi.org/project/constant-contact-api-client/
  source: https://github.com/constantcontact/constant-contact-v3api-client-python
  license: Private
  note: >-
    pyproject.toml authors field is "Constant Contact Public API <webservices@constantcontact.com>",
    the same contact address carried in the OpenAPI info block.
- name: constant_contact_client
  language: Ruby
  registry: rubygems
  official: true
  version: 1.5.0
  published: '2026-07-15'
  install: gem install constant_contact_client
  registry_url: https://rubygems.org/gems/constant_contact_client
  source: https://github.com/constantcontact/constant-contact-v3api-client-ruby
  license: BSD-3-Clause
  note: >-
    gemspec authors "Constant Contact", email ctct-publicapi@constantcontact.com,
    homepage v3.developer.constantcontact.com. 123,371 total downloads at time of probe.
- name: constantcontactpublicapi/constant-contact-v3api-client-php
  language: PHP
  registry: packagist
  official: true
  version: 1.12.0
  published: '2026-07-15'
  install: composer require constantcontactpublicapi/constant-contact-v3api-client-php
  registry_url: https://packagist.org/packages/constantcontactpublicapi/constant-contact-v3api-client-php
  source: https://github.com/constantcontact/constant-contact-v3api-client-php
  license: BSD-3-Clause
  note: Vendor namespace constantcontactpublicapi; composer.json author "ConstantContact".
- name: ConstantContactApi
  language: C#/.NET
  registry: nuget
  official: true
  version: 1.9.0
  published: '2026-07-16'
  install: dotnet add package ConstantContactApi
  registry_url: https://www.nuget.org/packages/ConstantContactApi
  source: https://github.com/constantcontact/constant-contact-v3api-client-csharp
  license: BSD-3-Clause
  note: >-
    NuGet authors field is the openapi-generator default ("OpenAPI"); attribution rests on
    the version/date matching the constantcontact/constant-contact-v3api-client-csharp
    1.9.0 release (2026-07-16) and on the provider listing it on developer.constantcontact.com/api_guide/sdks.html.
retired:
- name: php-sdk
  language: PHP
  registry: github
  official: true
  version: null
  published: null
  source: https://github.com/constantcontact/php-sdk
  note: Archived 2022; targets the retired V2 API. Recorded for lineage only.
- name: ruby-sdk
  language: Ruby
  registry: github
  official: true
  version: null
  published: null
  source: https://github.com/constantcontact/ruby-sdk
  note: Archived 2021; V2 API.
- name: java-sdk
  language: Java
  registry: github
  official: true
  version: null
  published: null
  source: https://github.com/constantcontact/java-sdk
  note: Archived 2019; V2 API. No V3 Java SDK is published.
- name: .net-sdk
  language: C#/.NET
  registry: github
  official: true
  version: null
  published: null
  source: https://github.com/constantcontact/.net-sdk
  note: Archived 2017; V2 API. Superseded by ConstantContactApi on NuGet.
- name: ios-sdk
  language: Objective-C
  registry: github
  official: true
  version: null
  published: null
  source: https://github.com/constantcontact/ios-sdk
  note: Archived 2015; V2 API. No V3 mobile SDK is published.
gaps:
- language: Java
  note: No first-party V3 Java client. The only Java SDK in the org is the archived V2 java-sdk.
- language: Go
  note: No first-party Go client published on pkg.go.dev or in the GitHub org.
probes:
- registry: npm
  url: https://registry.npmjs.org/ctct-api-client
  status: 200
- registry: pypi
  url: https://pypi.org/pypi/constant-contact-api-client/json
  status: 200
- registry: rubygems
  url: https://rubygems.org/api/v1/gems/constant_contact_client.json
  status: 200
- registry: packagist
  url: https://repo.packagist.org/p2/constantcontactpublicapi/constant-contact-v3api-client-php.json
  status: 200
- registry: nuget
  url: https://api.nuget.org/v3-flatcontainer/constantcontactapi/index.json
  status: 200