Quantcast
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.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Quantcast the way a machine reads it — 5 machine-readable artifacts across 3 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Quantcast scores 16.8/100 (emerging), with a separate agent-readiness read of 10/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Quantcast
Each block below is one kind of artifact we hold for Quantcast. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 3
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Quantcast Platform GraphQL API
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...
Quantcast Conversion API
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 conve...
Quantcast Measure (Live Tag)
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 SDK...
GraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Quantcast GraphQL API
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...
GRAPHQLSecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Quantcast — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Operate 2
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 6
The organization behind the API
Other 5
Properties that don't map to a standard resource type
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