Quantcast

aid: quantcast
name: Quantcast
description: Quantcast is a San Francisco-headquartered digital advertising and audience intelligence company founded in 2006.
  Its flagship offering is the Quantcast Platform, an AI-driven demand-side platform (DSP) for programmatic display, video,
  CTV, audio, mobile, and native advertising, powered by the company's proprietary Audience Graph and Ara AI engine. Quantcast
  also operates Quantcast Measure, a free audience measurement product that has tagged millions of digital properties to produce
  demographic, psychographic, and cross-device audience insights. For programmatic access, Quantcast exposes a developer portal
  at developers.quantcast.com built around a GraphQL API (v2) for reporting, campaign management, and audience operations
  on the Quantcast Platform, secured via OAuth 2.0 client credentials. A server-to-server Conversion API augments the browser-side
  Live Tag for offline and signal-loss-resilient conversion tracking. Quantcast Choice, the company's IAB TCF v2-compliant
  Consent Management Platform, was acquired by InMobi in August 2023 and is now operated as part of InMobi CMP; legacy Quantcast
  Choice mobile SDKs remain published under the quantcast GitHub organization for reference. Quantcast also open-sources the
  Quantcast File System (QFS), a C++ distributed file system, and mobile/Roku measurement SDKs.
type: Index
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Advertising
- AdTech
- Programmatic Advertising
- Demand-Side Platform
- DSP
- Audience Measurement
- Audience Intelligence
- Consent Management
- CMP
- Privacy
- GraphQL
- Conversion Tracking
- CTV
- Video Advertising
- Display Advertising
- Artificial Intelligence
- Audience Graph
url: https://raw.githubusercontent.com/api-evangelist/quantcast/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.20'
apis:
- aid: quantcast:quantcast-platform-graphql-api
  name: Quantcast Platform GraphQL API
  description: The Quantcast Platform GraphQL API (v2) is the primary programmatic interface to the Quantcast advertising
    platform. It exposes queries and mutations for reporting, campaign and line item management, audience operations, and
    account administration. Authentication uses OAuth 2.0 client credentials issued from the Quantcast Platform profile settings;
    tokens are short-lived (1 hour) and passed as bearer tokens. Rate limits are enforced per token. The full schema (queries,
    mutations, objects, enums, input objects, scalars) is documented on the developer portal but is not published as a downloadable
    OpenAPI or GraphQL SDL artifact.
  humanURL: https://developers.quantcast.com/docs/graphql-api
  baseURL: https://developers.quantcast.com/api/v2/graphql
  tags:
  - GraphQL
  - Reporting
  - Campaigns
  - Advertising
  properties:
  - type: Documentation
    url: https://developers.quantcast.com/docs/graphql-api
  - type: Authentication
    url: https://developers.quantcast.com/docs/get-started/authentication/
  - type: Usage
    url: https://developers.quantcast.com/docs/graphql-api/usage/
  - type: Reference
    url: https://developers.quantcast.com/docs/graphql-api/reference/
  - type: RateLimits
    url: https://developers.quantcast.com/docs/graphql-api/usage/rate-limits/
  - type: TokenEndpoint
    url: https://auth.quantcast.com/oauth2/default/v1/token
  - url: graphql/quantcast-graphql.md
    type: GraphQL
- aid: quantcast:quantcast-conversion-api
  name: Quantcast Conversion API
  description: The Quantcast Conversion API is a server-to-server integration that augments the browser-side Quantcast Live
    Tag. It accepts a JSON array of conversion events containing a conversion descriptor, a user object (browser token or
    user agent plus IP, optional hashed email, optional external ID), and an event object (labels, order ID, revenue, product
    category). It is designed to capture offline conversions, delayed sales, and conversions that occur outside of the browser,
    and to provide signal resiliency in cookie-restricted environments. The account ID is passed as the `a` query parameter.
  humanURL: https://help.quantcast.com/docs/tagging-with-the-quantcast-live-tag-using-the-conversion-api
  baseURL: https://pixel.quantserve.com/conversion
  tags:
  - Conversion
  - Server-to-Server
  - Tagging
  - Measurement
  properties:
  - type: Documentation
    url: https://help.quantcast.com/docs/tagging-with-the-quantcast-live-tag-using-the-conversion-api
  - type: LiveTag
    url: https://help.quantcast.com/docs/tagging-with-the-quantcast-live-tag
- aid: quantcast:quantcast-measure-tag
  name: Quantcast Measure (Live Tag)
  description: Quantcast Measure is the company's free audience measurement product. Publishers and advertisers integrate
    the Quantcast Live Tag (Q Pixel) on web properties, or the Measure SDKs on iOS, Android, and Roku, to contribute traffic
    to Quantcast's audience graph and receive demographic, psychographic, and cross-device audience insights through the Quantcast
    Measure UI.
  humanURL: https://help.quantcast.com/docs/measure
  tags:
  - Measurement
  - Tagging
  - Audience Insights
  - SDK
  properties:
  - type: Documentation
    url: https://help.quantcast.com/docs/measure
  - type: LiveTag
    url: https://help.quantcast.com/docs/tagging-with-the-quantcast-live-tag
  - type: SDKs
    url: https://github.com/quantcast/ios-measurement
  - type: SDKs
    url: https://github.com/quantcast/android-measurement
  - type: SDKs
    url: https://github.com/quantcast/roku-measurement
  - type: SDKs
    url: https://github.com/quantcast/phonegap-measurement
  - type: Integrations
    url: https://github.com/quantcast/gtm-measure-sst
common:
- type: Website
  url: https://www.quantcast.com
- type: Platform
  url: https://www.quantcast.com/platform/
- type: Measure
  url: https://www.quantcast.com/measure/
- type: Developers
  url: https://developers.quantcast.com
- type: Documentation
  url: https://developers.quantcast.com/docs/graphql-api
- type: HelpCenter
  url: https://help.quantcast.com
- type: Authentication
  url: https://developers.quantcast.com/docs/get-started/authentication/
- type: Company
  url: https://www.quantcast.com/company/
- type: Press
  url: https://www.quantcast.com/press/
- type: Blog
  url: https://www.quantcast.com/blog/
- type: Careers
  url: https://www.quantcast.com/careers/
- type: Contact
  url: https://www.quantcast.com/contact/
- type: Privacy
  url: https://www.quantcast.com/privacy/
- type: GitHub
  url: https://github.com/quantcast
- type: LinkedIn
  url: https://www.linkedin.com/company/quantcast
- type: Twitter
  url: https://twitter.com/quantcast
- type: YouTube
  url: https://www.youtube.com/user/Quantcast
- type: Acquisition
  url: https://www.quantcast.com/press-release/inmobi-acquires-quantcast-choice-to-enhance-frictionless-consent-management-for-publishers/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com