@techreport{nemethi-aid-agent-identity-discovery-00, number = {draft-nemethi-aid-agent-identity-discovery-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-nemethi-aid-agent-identity-discovery/00/}, author = {Balazs Nemethi}, title = {{Agent Identity and Discovery (AID)}}, pagetotal = 17, year = 2026, month = mar, day = 16, abstract = {Agent Identity and Discovery (AID) is a minimal, DNS-first discovery protocol for locating agent service endpoints. Given a domain name, an AID client queries a DNS TXT record at the well-known subdomain \_agent.\textless{}domain\textgreater{} and learns the service endpoint URI, protocol token, authentication hint, and optional metadata for that agent. This document defines the AID v1.2 record format, client discovery algorithm, exact-host lookup rules, security requirements, and IANA registrations for the {}`\_agent{}` DNS node name and the {}`agent{}` service name. AID is intentionally small. After discovery, protocol- specific mechanisms such as MCP or A2A handle communication and capability negotiation.}, }