@techreport{cui-ai-agent-discovery-invocation-02, number = {draft-cui-ai-agent-discovery-invocation-02}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-cui-ai-agent-discovery-invocation/02/}, author = {Yong Cui and Yihan Chao and Chenguang Du}, title = {{AI Agent Discovery and Invocation Protocol}}, pagetotal = 22, year = 2026, month = jul, day = 6, abstract = {This document proposes a standardized protocol for discovery and invocation of AI agents. It defines a common metadata format for describing AI agents (including capabilities, I/O specifications, supported languages, tags, authentication methods, etc.), a capability-based discovery mechanism, and a unified RESTful invocation interface. This revision refines the discovery mechanism by defining fields for intent-based agent selection. This capability enables a client, host agent, or orchestration system to describe a task intent and receive a ranked set of candidate agents before invocation, without changing existing discovery or invocation semantics. The goal is to enable cross-platform interoperability among AI agents by providing a discover-and-match mechanism and a unified invocation entry point. Security considerations, including authentication and trust measures, are also discussed. This specification aims to facilitate the formation of multi-agent systems by making it easy to find the right agent for a task and invoke it in a consistent manner across different vendors and platforms. Intent-based selection is an application-layer capability and does not define network routing, packet forwarding, path computation, reachability advertisement, or address resolution.}, }