Scope3
Programmatic adtech software for media quality, agentic advertising, optimisation and carbon intelligence.
Available information varies by company and source.
Profile record updated:
Company facts
- Official name
- Scope3, PBC
- Entity type
- COMPANY
- Founded
- 2022
- Company size
- 50–200
- Market role
- AdTech Vendor
- Official website
- scope3.com
What Scope3 does
Scope3 operates a B2B AdTech platform model. It sells software and embedded decisioning tools that sit across the programmatic supply chain, helping buyers and sellers activate campaigns, enforce brand rules, assess inventory quality, measure outcomes and incorporate sustainability signals into media decisions. Value is created by reducing wasted spend, improving media governance and providing cross-platform control without requiring customers to replace all existing DSP, SSP or publisher relationships.
Category differentiation
Scope3 is not a consumer app, media agency or foundational LLM provider. It is an AdTech software and measurement company focused on programmatic media quality, activation controls and sustainability signals.
Strategic context
AI-supported assessment from the existing company research; distinguish interpretation from sourced facts.
Scope3 is a private AdTech software company that provides a programmatic advertising control layer for advertisers, agencies, publishers, SSPs and other media platforms. Its products combine media activation, verification, contextual decisioning, reporting and carbon measurement so customers can manage buying rules, inventory quality and sustainability outcomes across channels such as web, social, CTV and in-app. The company makes money primarily from enterprise software and usage-based platform fees tied to programmatic activity, integrations and data consumption. Its offering is positioned as infrastructure embedded into existing buying and selling workflows rather than as a consumer product or a standalone foundational AI model. The 2024 acquisition of Adloox strengthened its verification and media quality stack.
Company news briefing
Briefing updated:
Scope3 has officially completed its rebranding to Apostra, cementing its strategic pivot from carbon emissions calculation to agentic advertising infrastructure and agent-to-agent ad buying. Led by Brian O'Kelley, the company has leveraged its Ad Context Protocol to manage significant media spend globally, reflecting a wider adtech sector shift toward automated AI commerce and conversational buying ecosystems following earlier portfolio adjustments.
Business model & monetisation
Scope3 primarily monetises through SaaS licensing and usage-based commercial models linked to advertising activity, integrations and data consumption. Revenue comes from enterprise platform subscriptions, platform/API access, and fees for measurement, verification, media quality and sustainability data embedded into buying workflows or partner platforms. Its monetisation is therefore a mix of software subscription and metered AdTech data/activation fees rather than media arbitrage.
- Enterprise platform subscriptions
- Software Subscription
- Usage-based activation and API fees
- Pay-per-Use
- Measurement, verification and quality data licensing
- Pay-per-Use
- Sustainability and emissions reporting data
- Software Subscription
Products & capabilities
No products with linked sources are available in this view.
Products & market categories
Technology
Subsidiaries & acquisitions
- Adloox
Ad verification and measurement software for programmatic advertising.
Recent recorded signals
Dates refer to the source publication. Older entries are historical context, not evidence of a new event.
Apostra Bets on Agentic Ad Layer
Agentic Advertising · Recorded impact score: 4/5
Scope3 has rebranded as Apostra, pivoting from its original carbon emissions calculator mission to focus on enabling agent-to-agent ad buying and selling. The company, led by adtech veteran Brian O'Kelley, has been building agentic advertising infrastructure since early 2025, including the Ad Context Protocol (AdCP) open standard and a platform that allows AI agents to negotiate and execute media buys. Apostra has already managed $1.2 million in media spend over the last three months, with clients in the U.S., U.K., France, Brazil, the Netherlands, and South Africa. The company faces competition from the IAB Tech Lab's AAMP 3.0 standard, which also aims to standardize agentic media buying. O'Kelley acknowledges the shift away from sustainability but argues AI is the biggest growth area. The article questions whether the industry needs such a neutral layer or if open standards suffice.
- Scope3 rebranded to Apostra, shifting focus from sustainability to agentic advertising.
- Apostra's platform manages $1.2 million in media spend over the last three months.
Shopify Uses Meta's Muse for Agentic Checkout; O'Kelley's Startup Pivots to AI Agents
Agentic Commerce · Recorded impact score: 3/5
The article is a digest covering two separate news items: First, Shopify is integrating Meta's Muse AI model to enable agentic checkout experiences, allowing AI agents to perform purchases on behalf of users. Second, Brian O'Kelley's startup, Scope3, is pivoting to focus on AI agent advertising technology, shifting its core business toward solutions for the growing agentic commerce ecosystem. These developments highlight the increasing role of AI agents in e-commerce and advertising.
- Shopify is integrating Meta's Muse AI model for agentic checkout.
- Brian O'Kelley's startup is pivoting to AI agent technology.
Introducing Apostra: Scope3 is becoming Apostra
Recorded impact score: 4.5/5
Scope3 is rebranding to Apostra, with a new focus on giving advertisers and their agents direct access to everywhere brands can reach consumers. The announcement is dated 09.23.2026.
Sustainability Retreats in AdTech as Agentic AI Rises
Sustainability · Recorded impact score: 3/5
An ExchangeWire column by Paul Evans argues that sustainability has been deprioritized across ad tech as the sector pivots toward agentic AI and related infrastructure. The piece highlights the sale of Adloox by Scope3 to Peer39, observations from Cannes where major firms showcased agent-to-agent advertising, and survey data showing declines in ESG disclosure and sustainable creative. It also notes rising industry emissions — citing Amazon's 2025 greenhouse gas increase — and warns that building agentic AI capabilities may increase the sector's carbon footprint even as sustainability frameworks and toolkits (e.g., Ad Net Zero v1.3) continue to be developed.
- In early June, Scope3 sold its ad verification business, Adloox, to Peer39.
- Scope3 had acquired Adloox 18 months earlier to combine verification with carbon measurement and reduce wasted inventory at the point of trade.
Careers & open positions
Open positions indexed from verified career portals and applicant tracking systems.
| Position | Department | Location | Posted |
|---|---|---|---|
| Senior Platform Software Engineer(Senior) | Engineering | United States (Remote) · Canada (Remote) | |
| Staff Software Engineer(Staff) | Engineering | Remote (United States) · Remote (Canada) |
Explore company relationships
Questions about Scope3
What is Scope3?
Scope3 is a private AdTech software company that helps advertisers, agencies and media owners manage programmatic media quality, activation and carbon-aware decisioning.
Who uses Scope3?
Its users are mainly enterprise brands, agencies, publishers, SSPs, curators and programmatic media teams rather than consumers.
How does Scope3 make money?
It makes money through enterprise software subscriptions and usage-based fees for activation, measurement, verification and sustainability data.
Sources & coverage
This profile uses public, official and technically observable information. Missing information does not prove that a product or relationship does not exist. The list below does not imply that every profile statement has been verified.
20 publicly documented primary sources and citations linked across the market graph.
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