> ## Content Index
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# IAB Tech Lab Agent Registry
- URL: https://www.adlingo.org/glossary/iab-tech-lab-agent-registry/
- Published: 2025-01-15T10:48:00.000Z
- Updated: 2025-01-15T10:48:00.000Z
- Description: A directory in the IAB Tech Lab Tools Portal where companies list the MCP and A2A agents they operate, which other agents can query.
- Author: Travis Lusk
- Tags: Agentic Advertising, #glossary, #Import 2026-10-27 17:05

The phone book for ad tech agents. If your buyer agent wants to find a seller agent, or verify who operates it, this is a good place to start. A registry alone will not stop a bad actor. It does make it harder to hide.