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Agent-to-agent infrastructure for advertising

Agentic advertising, built on trust.

pubX builds agent-to-agent infrastructure for advertising. Buyer agents and seller agents, educated by pubX, trained by you, governed on both sides of every transaction, built on years of publisher-side trust and data.

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Trusted by publishers across thousands of websites worldwide.5 years of machine learning for publishers, at scale.

For publishers, advertisers and agencies

One infrastructure. Two powerful solutions.

Publishers

Turn first-party data into a competitive advantage

Unlock the full value of your inventory. pubX enables publishers to monetise first-party data at premium rates, using agentic sales technology to turn first-party signals into a genuine pricing advantage — negotiating the best value for every impression and driving increased yield.

Explore publisher solutions

Advertisers & agencies

Access premium inventory and exclusive data signals

Reach high-quality audiences with greater precision. Agentic buying technology accesses publisher signals that traditional programmatic never surfaces — evaluating inventory, building high-performing segments, and activating campaigns with agents in the loop throughout. You set the level of autonomy and approve at key steps; as trust is earned, autonomy grows.

Explore advertiser solutions

How it works

A transparent, data-driven agent-to-agent infrastructure

pubX connects premium publisher inventory with advertiser demand in real time – creating efficient, high-value transactions for both sides. Behind the scenes, buyer and seller agents transact directly, governed on both sides of every buy, throughout the campaign lifecycle.

The result: publishers turn more of their inventory into active, revenue-generating media. Advertisers gain access to premium, differentiated inventory. Both sides get complete transparency and control.

Advertisers & agencies

Brief, rules, autonomy level

pubX Buyer Agent

Evaluates inventory, builds segments

Ad Context Protocol

pubX Seller Agent

Prices and packages first-party data

Publishers

Inventory, signals, approvals

Governed on both sides of every transaction, throughout the campaign lifecycle
“Working with pubX has been an absolute pleasure. We massively appreciate their focus on pubtech, whilst supporting us with a team that is incredibly knowledgeable, responsive and dedicated to delivering continual high-quality results. From start to finish, the integration process was seamless and commercial results are exceeding our expectations. I highly recommend pubX to any publisher looking for successful revenue growth.”
James Florence, Head of Advertising TechnologyImmediate Media
Read the success stories

Our foundation

Built on trust. Proven at scale.

For 5 years, pubX has built and deployed machine learning technology for publishers at scale, built on years of pricing and selling publisher inventory — now serving thousands of websites worldwide.

That foundation of real data, trusted relationships and proven results is what separates pubX’s infrastructure from the experimental. Our technology is battle-tested, our insights are grounded in reality, and our outcomes are measurable.

of publisher-side machine learning
5 years
of publisher-side machine learning
of websites served worldwide
1000s
of websites served worldwide
governed on every transaction
2 sides
governed on every transaction
DSP hand-offs to activate a deal
0
DSP hand-offs to activate a deal

Why pubX

Built different. Proven results.

End-to-end agentic solution

Agent-to-agent technology that transacts directly across both sides, governed on both sides of every buy – unlocking value that traditional programmatic approaches cannot achieve.

First-party data monetisation

Publishers monetise their data at premium rates. Advertisers access exclusive signals not available elsewhere – all within a privacy-compliant, transparent framework.

Built on both sides

Publishers take a pubX seller agent. Advertisers and agencies take a pubX buyer agent. Educated by pubX, trained by you, governed on both sides of every transaction.

Proven at scale

Built on years of real-world deployment, trusted relationships and a proven publisher heritage – pubX delivers results that have been tested in market.

Resources

From the Hub

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Ready to unlock more value from programmatic?

Whether you’re a publisher looking to maximise revenue or an advertiser seeking access to premium inventory, pubX connects both sides through a transparent, high-performance agent-to-agent infrastructure for advertising.

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