Infoblox, Inc. Infoblox, Inc. Unaffiliated Deutsche Telekom This document specifies a method for utilizing the Domain Name System (DNS) to facilitate scalable and interoperable discovery between AI agents. The proposed mechanism, referred to as "DNS AI agent Discovery (DNS-AID)", defines a structured DNS namespace and record usage model to support metadata exchange and capability advertisement. This will allow organisations to publish information about their AI agents on the Internet or internal networks using a well-known label within the organisation's own DNS namespace. This document does not define how the published agent information is accessed or the exact structure of that information. Instead, it specifies a mechanism for indicating which access protocol should be used and what format the agent information will be provided in. This document proposes no change to the structure of DNS messages, and no new operation codes, response codes, resource record types, or any other new DNS protocol values.