The publisher's sales team, on call around the clock. A buyer agent shows up with a brief, and the sales agent answers with products, prices, and packages. It can say yes, counter, or pass, all inside the rules the publisher sets. For smaller publishers, this could be the first time they get a real seat at the table with holdco buyers.
Ad tech glossary
Sales Agent (Seller Agent)
Technical definition
An AI agent acting on behalf of a publisher or seller to describe, price and sell inventory. In AdCP, a sales agent is an MCP server that exposes a publisher's inventory for discovery, buying and campaign management.
The ADLINGO translation
Get the full Mega Glossary as a PDF
Nearly 200 ad tech terms, translated. Plus the ADLINGO newsletter every Tuesday. Free.
Related terms
- A2A (Agent2Agent Protocol)
- AAMP (Agentic Advertising Management Protocols)
- adagents.json
- AdCP (Ad Context Protocol)
- Agent Manifest
- Agentic Advertising
- Agentic Audiences
- Agentic Commerce
- Agentic Commerce Protocol (ACP)
- Agentic Marketplace
- AgenticAdvertising.org
- Answer-Based Ads
Where this shows up
AI: What we owe the team
I'm clocking two kinds of advertising executives right now: Ones who treat AI like a procurement decision, and the ones treating it like a leadership test. One buys tools. The other builds teams that know how to use them.
The skills that survive
You cannot automate a decade of being trustworthy. You can't prompt your way to someone wanting to work with you for the next year.
The RFP Oracle
The ad tech sales season is wrapping up for 2026. AI dominated everything the market responded to this year, and it was the most predictable trend ever. All we had to do was pay attention to what the agencies were asking.