generated: '2026-08-13'
method: searched
source: https://developers.klaviyo.com/en/docs/sdk_overview
notes: >-
  Versions and publish dates read from each registry's unauthenticated metadata
  endpoint on 2026-08-13 (registry.npmjs.org, pypi.org/pypi/<pkg>/json,
  rubygems.org/api/v1/gems/<pkg>.json, repo.packagist.org, pub.dev/api/packages,
  api.github.com releases for the mobile SDKs). Klaviyo's server-side SDKs are
  generated from the same OpenAPI at https://github.com/klaviyo/openapi and are
  released in lockstep — node/python/php/ruby all shipped on 2026-07-15, matching
  the 2026-07-15 API revision. Android and Swift are distributed through Maven
  Central / Swift Package Manager respectively; Maven Central has no `com.klaviyo`
  group published (repo1.maven.org/maven2/com/klaviyo/ returns 404), so the Android
  version is read from the GitHub release tag instead and `registry` is recorded as
  `github-releases`.
packages:
  - language: javascript
    registry: npm
    name: klaviyo-api
    url: https://www.npmjs.com/package/klaviyo-api
    install: npm install klaviyo-api
    repository: https://github.com/klaviyo/klaviyo-api-node
    version: 23.0.0
    published: '2026-07-15'
    official: true
    note: TypeScript client for the Klaviyo REST API; generated from klaviyo/openapi.

  - language: python
    registry: pypi
    name: klaviyo-api
    url: https://pypi.org/project/klaviyo-api/
    install: pip install klaviyo-api
    repository: https://github.com/klaviyo/klaviyo-api-python
    version: 24.0.0
    published: '2026-07-15'
    official: true

  - language: php
    registry: packagist
    name: klaviyo/api
    url: https://packagist.org/packages/klaviyo/api
    install: composer require klaviyo/api
    repository: https://github.com/klaviyo/klaviyo-api-php
    version: 20.0.0
    published: '2026-07-15'
    official: true

  - language: ruby
    registry: rubygems
    name: klaviyo-api-sdk
    url: https://rubygems.org/gems/klaviyo-api-sdk
    install: gem install klaviyo-api-sdk
    repository: https://github.com/klaviyo/klaviyo-api-ruby
    version: 18.0.0
    published: '2026-07-15'
    official: true

  - language: kotlin
    registry: github-releases
    name: klaviyo-android-sdk
    url: https://github.com/klaviyo/klaviyo-android-sdk
    install: 'implementation "com.klaviyo.analytics:analytics:4.4.1"'
    repository: https://github.com/klaviyo/klaviyo-android-sdk
    version: 4.4.1
    published: '2026-06-29'
    official: true
    note: >-
      Mobile SDK (push, in-app messages, geofencing, event + profile tracking).
      No `com.klaviyo` group is published on Maven Central
      (repo1.maven.org/maven2/com/klaviyo/ -> HTTP 404), so no registry metadata
      endpoint could be queried; version and date come from the GitHub release tag.

  - language: swift
    registry: swift-package-manager
    name: klaviyo-swift-sdk
    url: https://github.com/klaviyo/klaviyo-swift-sdk
    install: 'https://github.com/klaviyo/klaviyo-swift-sdk.git (SPM)'
    repository: https://github.com/klaviyo/klaviyo-swift-sdk
    version: 5.3.1
    published: '2026-04-30'
    official: true
    note: >-
      Swift Package Manager resolves from the git tag directly; SPM has no central
      registry metadata endpoint, so version/date come from the GitHub release tag.

  - language: javascript
    registry: npm
    name: klaviyo-react-native-sdk
    url: https://www.npmjs.com/package/klaviyo-react-native-sdk
    install: npm install klaviyo-react-native-sdk
    repository: https://github.com/klaviyo/klaviyo-react-native-sdk
    version: 2.4.1
    published: '2026-05-05'
    official: true

  - language: javascript
    registry: npm
    name: klaviyo-expo-plugin
    url: https://www.npmjs.com/package/klaviyo-expo-plugin
    install: npx expo install klaviyo-expo-plugin
    repository: https://github.com/klaviyo/klaviyo-expo-plugin
    version: 0.4.0
    published: '2026-04-17'
    official: true
    note: Expo config plugin wrapping klaviyo-react-native-sdk.

  - language: dart
    registry: pub.dev
    name: klaviyo_flutter_sdk
    url: https://pub.dev/packages/klaviyo_flutter_sdk
    install: flutter pub add klaviyo_flutter_sdk
    repository: https://github.com/klaviyo/klaviyo-flutter-sdk
    version: 0.2.0
    published: '2026-05-05'
    official: true

  - language: python
    registry: pypi
    name: klaviyo-mcp-server
    url: https://pypi.org/project/klaviyo-mcp-server/
    install: uvx klaviyo-mcp-server@latest
    repository: https://developers.klaviyo.com/en/docs/klaviyo_mcp_server
    version: 0.4.1
    published: '2026-03-05'
    official: true
    kind: mcp-server
    note: >-
      First-party — PyPI author is "Klaviyo Developer Experience Team
      <developers@klaviyo.com>". This is the LOCAL stdio MCP distribution; the
      hosted remote server is https://mcp.klaviyo.com/mcp. Last published
      2026-03-05, four months behind the 2026-07-15 SDK/API release train.

  - language: javascript
    registry: cdn
    name: klaviyo.js (Onsite tracking snippet)
    url: https://static.klaviyo.com/onsite/js/klaviyo.js
    install: '<script async src="https://static.klaviyo.com/onsite/js/klaviyo.js?company_id=PUBLIC_API_KEY"></script>'
    version: null
    published: null
    official: true
    note: >-
      Browser tracking + onsite forms loader, served from Klaviyo's CDN (HTTP 200
      on 2026-08-13). The script URL is UNPINNED — it carries no version segment
      and floats to whatever Klaviyo currently serves, so a consumer cannot
      determine which build they are running. version/published recorded as null
      for that reason, not because they were unchecked.

third_party_noted:
  - language: javascript
    registry: npm
    name: klaviyo-mcp
    url: https://www.npmjs.com/package/klaviyo-mcp
    version: 1.0.0
    published: '2026-02-08'
    official: false
    note: >-
      NOT first-party — published from github.com/doinglean/klaviyo-mcp. Recorded
      only so it is not mistaken for Klaviyo's own MCP distribution, which is the
      PyPI package klaviyo-mcp-server plus the hosted mcp.klaviyo.com endpoint.

summary:
  official_count: 11
  languages: [javascript, typescript, python, php, ruby, kotlin, swift, dart]
  registries: [npm, pypi, packagist, rubygems, pub.dev, github-releases, swift-package-manager, cdn]
  release_train: >-
    The four server-side SDKs (node, python, php, ruby) are generated from
    klaviyo/openapi and all released 2026-07-15, the same date as the current API
    revision — no abandonment signal on the core SDK surface.