generated: '2026-08-13'
method: searched
source: >-
  registry.npmjs.org, trunk.cocoapods.org, repo1.maven.org, rubygems.org,
  github.com/quantcast, and help.quantcast.com
note: >-
  Exactly one first-party Quantcast client library is currently maintained —
  the browser events SDK for the Conversion API. Every other published
  package is a Measure-era mobile SDK that Quantcast has explicitly marked
  DEPRECATED in its own README ("Quantcast no longer supports mobile in app
  measurement at this time"), with last releases between 2015 and 2020.
  There is NO client library of any kind for the Quantcast Platform GraphQL
  API in any registry — the documented integration path is a raw HTTP POST
  or the published Postman collection.
packages:
- language: javascript
  registry: npm
  name: '@quantcast-labs/events-sdk'
  url: https://www.npmjs.com/package/@quantcast-labs/events-sdk
  install: npm install @quantcast-labs/events-sdk
  official: true
  version: 0.1.4
  published: '2025-10-06'
  first_published: '2025-07-17'
  license: SEE LICENSE IN LICENSE.txt
  covers: Quantcast Conversion API (browser token acquisition)
  status: active
  note: >-
    Named in the Quantcast help documentation for the Conversion API as the
    supported way to invoke quantcast.token from the browser, which is what
    establishes it as first-party. Still pre-1.0; five releases total.
  source: https://help.quantcast.com/docs/tagging-with-the-quantcast-live-tag-using-the-conversion-api
- language: swift-objc
  registry: cocoapods
  name: Quantcast-Measure
  url: https://cocoapods.org/pods/Quantcast-Measure
  install: pod 'Quantcast-Measure'
  official: true
  version: 1.7.1
  published: '2020-05-04'
  covers: Quantcast Measure for iOS
  status: deprecated
  note: >-
    The GitHub README is titled "[DEPRECATED] Quantcast iOS SDK - Quantcast
    no longer supports mobile in app measurement at this time." Repository
    last pushed 2024-04-25; last CocoaPods release 2020-05-04.
  repository: https://github.com/quantcast/ios-measurement
- language: java
  registry: maven
  name: com.quantcast.android.measurement:QuantcastAndroidSdk
  url: https://repo1.maven.org/maven2/com/quantcast/android/measurement/QuantcastAndroidSdk/
  install: "implementation 'com.quantcast.android.measurement:QuantcastAndroidSdk:1.3.0'"
  official: true
  version: 1.3.0
  published: '2015-08-18'
  covers: Quantcast Measure for Android
  status: deprecated
  note: >-
    Maven Central metadata lastUpdated 20150818. The README documents a
    JCenter coordinate at version 1.5.1 that Maven Central never carried, and
    JCenter itself has been sunset — so the only resolvable artifact is the
    2015 Maven Central 1.3.0. README opens "Quantcast Android SDK
    (Deprecated)".
  repository: https://github.com/quantcast/android-measurement
- language: ruby
  registry: rubygems
  name: qfs
  url: https://rubygems.org/gems/qfs
  install: gem install qfs
  official: true
  version: 0.0.13
  published: '2016-12-19'
  license: MIT
  covers: Quantcast File System (QFS) client bindings — open-source infrastructure, not an API client
  status: unmaintained
  repository: https://github.com/quantcast/qfs-ruby
- language: javascript
  registry: cdn
  name: quant.js (Quantcast Live Tag)
  url: https://pixel.quantserve.com/quant.js
  install: '<script type="text/javascript" async="true" src="https://pixel.quantserve.com/quant.js"></script>'
  official: true
  version: null
  published: null
  note: >-
    The Live Tag is distributed only as an unpinned script tag from
    pixel.quantserve.com — there is no registry entry and no version in the
    URL, so a consumer cannot tell which build they are executing and neither
    can we. Recorded as version null deliberately: checked, nothing to
    record.
  source: https://help.quantcast.com/docs/installing-live-tag
- language: brightscript
  registry: github
  name: roku-measurement
  url: https://github.com/quantcast/roku-measurement
  official: true
  version: null
  published: null
  status: deprecated
  note: >-
    Source-only distribution, no tagged releases and no registry. README
    opens "[DEPRECATED] Quantcast Measure SDK for Roku". Last pushed
    2024-04-25.
- language: objective-c
  registry: github
  name: phonegap-measurement
  url: https://github.com/quantcast/phonegap-measurement
  official: true
  version: null
  published: null
  status: abandoned
  note: Cordova/PhoneGap Measure plugin; repository last pushed 2016-02-18.
- language: smarty
  registry: github
  name: gtm-measure-sst
  url: https://github.com/quantcast/gtm-measure-sst
  official: true
  version: null
  published: null
  status: active
  note: >-
    Google Tag Manager server-side tagging template for Quantcast Measure.
    A tag template rather than a client library; distributed through the GTM
    community gallery from this repository. Last pushed 2026-07-16.
registries_checked:
- registry: npm
  result: 1 first-party package (@quantcast-labs/events-sdk); "quantcast" and "@quantcast/events-sdk" both 404
- registry: pypi
  result: no first-party package
- registry: maven-central
  result: only com/quantcast/android/measurement (2015)
- registry: nuget
  result: no first-party package
- registry: rubygems
  result: qfs 0.0.13 (infrastructure, not an API client)
- registry: cocoapods
  result: Quantcast-Measure 1.7.1 (deprecated)
- registry: crates.io
  result: no first-party package
- registry: packagist
  result: no first-party package
- registry: pkg.go.dev
  result: no first-party client; the quantcast org publishes Go forks (promise, g2, roaring), not API clients