Discovery

What Is MRT Discovery?

The Discovery section of Pixalate's Media Ratings Terminal (MRT) is the primary workspace for supply vetting at scale. It gives buyers, sellers, and platform teams a filtered, searchable view into millions of properties across Connected TV (CTV), Mobile Apps, and Websites to surface privacy, compliance, risk, traffic, and brand safety signals in one place.

Whether you're building an exclusion list before a campaign launches, vetting a new publisher relationship, or running a bulk quality check against your existing supply, Discovery is where that work begins.

Accessing Discovery: Three Inventory Channels

Discovery is organized into three parallel workspaces, each tailored to the signals and metadata most relevant to that inventory type:

Mobile Apps covers iOS (App Store) and Android (Google Play) inventory. 

CTV Apps covers streaming applications across major platforms including Roku, Fire TV, Samsung, LG TV, and tvOS. CTV apps carry some unique data points not present on mobile, including app spoofing signals and channel-level data for MVPD apps. 

Websites covers open web domains, with signals oriented toward desktop and mobile web traffic, including ads.txt status, MFA risk, brand safety, and domain age.

All three channels share a common filtering framework and export workflow, making it straightforward to apply consistent vetting standards across inventory types.

The Filter Panel: Narrowing Results 

The left-hand filter panel is where most active vetting happens. Discovery lets you build lists by filtering across hundreds of metrics, including app details, traffic, and brand safety.

Filters operate across several categories: 

Risk & IVT. The overall risk rating (Low / Medium / High) is a composite score which is comprised of programmatic transactional data, IVT rates (MRC accredited), ad viewability, registration data, app store data, authorized sellers, brand safety information, and more. Users can filter directly on the composite risk score or on individual IVT sub-signals. 

Brand Safety. Discrete filters are available for each advisory category - adult content, gambling, violence, offensive content, hate speech, alcohol/drug content - allowing teams to build exclusion lists calibrated to a specific advertiser's requirements rather than applying a single blanket brand safety threshold.

Compliance. Filters include COPPA Violation Risk Rating, COPPA Audience Assessment (child-directed vs. general audience), privacy policy presence, terms and conditions presence, app-ads.txt or ads.txt detection, and age gate detection.

Made for Advertising (MFA). For domains, a "Made For Advertising Risk" filter appears in the left sidebar alongside an MFA Risk column in the main grid, allowing users to filter based on Pixalate's MFA risk designations of low, medium, or high. MFA detection for websites breaks down into sub-components including ad load, ad density, social media traffic sourcing, and paid traffic sourcing. Pixalate

Traffic & Audience. Filters are available on Daily Active Users, Monthly Active Users, inventory volume, download ranges, average user ratings, content rating, and top device type.

Supply Chain & Compliance. Users can filter on Trusted Seller status, app-ads.txt / ads.txt presence, and the Owner Domain field. These are available as a filter and useful for identifying all properties owned by a single business entity, a key signal for Supply Path Optimization.

Region and Device. Region options for apps include North America, EMEA, LATAM, APAC, and Global. Device options depend on the selected supply type. 

For CTV specifically, Discovery also includes a Spoofing toggle that lets users view their list results with or without spoofed inventory incorporated into IVT percentages. This is useful when analyzing whether an app's risk profile is driven by legitimate traffic or fraudulent bundle spoofing.

Bulk Upload and Custom Discovery

One of Discovery's most operationally useful features is the ability to upload large lists for bulk evaluation. Discovery lets you upload thousands of publishers at a time to determine overall risk and download all associated data insights. Pixalate

Users submit lists as CSV files containing bundle IDs (mobile/CTV) or domains (websites). The MRT runs each identifier against its database and returns a row of data for every matched property. 

The Discovery Dashboard extends this further, allowing teams to apply the full filter panel to a custom-uploaded list rather than the full indexed universe. This is useful for evaluating a specific partner's app portfolio or a curated supply list against Pixalate's data.

Mobile Apps - CSV Upload output

Websites - CSV Upload output

Related Resources

• MRT Discovery FAQ
• Narrowing Discovery Results with Device & Region Filters
• Owner Domain Filtering
• MFA Identification in the MRT
• Insights for Mobile Apps, CTV Apps, and Domains
• MRT API Documentation