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StackUp is the curation infrastructure layer for publishers, instrumenting inventory with the signals buyers want, packaging it into deal-ready supply, and authorizing it per buyer.
No consultancy.·No engagements.·Infrastructure that ships.
Cookies depreciated. Demand fragmented. Direct deals compressed into the auction. Buyers consolidated into supply-path optimization mandates. Three forces, one outcome: the publisher's own signals decide whether their impression gets bid on, ignored, or undervalued.
Cookieless and post-IDFA buyers route spend toward inventory with first-party context. Slots without enriched signals fall out of the consideration set before bidding begins.
The top DSPs have cut their supply paths by 60 to 80%. Inclusion is no longer a function of access. It's a function of signal quality, transparency, and route economics.
The fastest-growing pool of programmatic spend now flows through curated supply. Publishers exposed correctly into curation see incremental demand; publishers exposed as commodity inventory don't.
StackUp instruments every impression with the signals buyers need, aggregates observed demand patterns into targetable cohorts, and packages the result into supply products buyers can transact against, authorized per buyer, per deal.
Derived from session behavior, content engagement, and audience patterns. No PII. No user identifiers. Just the signal that describes the audience present on this impression — not the individual within it.
Aggregated per URL cluster, ad format, OS, environment, and geo. Categorical, k-anonymized, refreshed continuously. Tells the buyer what kind of demand this slot historically attracts — without leaking brands, raw CPMs, or path identifiers.
Publisher-defined signals — subscriber tier, editorial section, story freshness, custom labels — emitted via SDK at impression time, schema-validated, and exposed to authorized buyers as targetable keys.
Most curation platforms describe their value in adjectives. StackUp shows the bytes. The enrichment lives in the open bid request — usable by every demand partner the publisher works with, not locked inside a single curator's marketplace
{
"site": {
"ext": {
"data": {
// User-based signals — audience & context
"stackup": {
"audience_tier": "premium",
"vertical_lean": ["tech", "finance"],
"engagement_depth": "high",
"brand_safety": "low_risk"
},
// Demand-path signals — observed patterns, k-anonymized
"stackup_demand": {
"cluster": "device_reviews",
"cpm_tier": "mid",
"vertical_diversity": "high",
"top_verticals": ["auto", "telco", "fintech"]
},
// First-party data — publisher-defined, SDK-emitted
"stackup_pub": {
"subscriber_tier": "premium",
"editorial_section": "fantasy_basketball",
"story_freshness_hours": 6,
"tags": ["playoffs", "longform"]
}
}
}
}
}The hard question every publisher should ask of a curation partner: does this attract demand that wasn't reaching me before, or just rearrange what already was? StackUp is built to deliver the first.
Buyers operating under SPO mandates filter supply by signal quality before they ever evaluate price. Enriched inventory gets seen; commodity inventory doesn't.
Demand-path observation surfaces the verticals already paying for your context — and exposes the slot to that demand category in the formats and packages buyers transact in.
Your subscriber data, editorial taxonomy, and engagement signals become discrete, schema-defined targeting surfaces — buyer-discoverable, authorization-controlled, deal-ready.
SSPs serve demand. DSPs serve demand. Most curation platforms serve demand. StackUp is the inversion, built for publishers, with demand as the signal that informs how.
We don't tell publishers what to sell. We observe what demand buys across paths, formats, contexts, geos and instrument the publisher's inventory to meet it. The business doesn't change. The way it's exposed to demand does.
Performance reported in the categories that matter to a yield team: signal coverage, demand reach, package conversion, and incremental CPM. Aggregated across StackUp publishers.
Agentic advertising is arriving. IAB's Agentic Request-for-Talk Framework, the Ad Context Protocol, and the first agentic demand layers from major DSPs. In that world, publisher inventory isn't delivered impression-by-impression. It's discovered, evaluated, and transacted against by AI buying agents. StackUp's infrastructure was built for that shape.
Every signal is typed, versioned, and discoverable via API, readable by agents, not just by traders.
Enrichment lives where buying agents already look. No proprietary surfaces to learn.
Inventory and signals are entitled per buyer — already deal-aware, already access-controlled.
Supply packages expose context, audience, and yield metadata that map directly into the AdCP request shape.
StackUp turns raw inventory into addressable, packageable, transactable supply, in three layers that run continuously, machine-side, without engagements.
StackUp will run an instrumentation review of your inventory and show you the signals, packages, and demand patterns already addressable on your supply. No deck. No engagement. A live readout from the console.