# Quantcast

**Canonical:** https://apis.io/providers/quantcast/  
**Website:** https://www.quantcast.com  
**APIs profiled:** 3

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.

## Kin Score — 38.9 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 38.9).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 0.0 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 50.0 |
| Developer Ergonomics | 70.8 |
| Commercial Clarity | 34.2 |
| Access Clarity | 34.2 |

## Agent readiness — 16.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (3)

- **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...

## MCP servers (1)

- **Quantcast MCP candidate manifest (no server published)**

## Security (2)

- **Quantcast Authentication** — oauth2/http/apiKey · 3 schemes
- **Quantcast Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Quantcast Plans Pricing**

## 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

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/quantcast/). Scores are computed from the provider's own public artifacts under a published rubric.