How should AI agents actually discover and talk to each other?

RaraAvis27 · reddit · 2026-09-13

A developer asks how agents in multi-agent systems should discover and communicate with each other, listing current approaches: hardcoded calls, a central orchestrator, MCP/tool-based integration, A2A-style protocols, message queues, and agent directories. The thread invites practitioners to share what they actually ship and what breaks first once systems grow beyond 2-3 agents.

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