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-productions.s3.amazonaws.com/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 - 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: SDK url: https://github.com/quantcast/ios-measurement - type: SDK url: https://github.com/quantcast/android-measurement - type: SDK url: https://github.com/quantcast/roku-measurement - type: SDK url: https://github.com/quantcast/phonegap-measurement - type: Integration 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