Glossary/AI Search & Emerging/Buyer Agent
AI Search & Emerging
Buyer Agent
An AI agent working for an advertiser or agency that finds inventory, evaluates proposals, and executes media buys against a campaign brief.
By Brandon Mina·CEO, BrandPilot AI·Updated November 2026
Short answer
A buyer agent is an AI agent working for an advertiser or agency that finds media inventory, evaluates proposals, and executes buys against a campaign brief. It communicates with seller agents representing publishers and platforms. Humans set objectives, budgets, and guardrails, while the agent automates discovery, negotiation, and booking tasks.