Agent interop protocols (A2A / AGNTCY)
Cross-agent communication standards
Beyond tool-calling, standards like Google's Agent2Agent (A2A, donated to Linux Foundation) and the AGNTCY/agent-identity efforts aim to let agents from different vendors discover, authenticate and delegate to one another. These interop and identity layers are the plumbing for multi-agent systems to work across organizational boundaries.
Examples
A2A (Linux Foundation), AGNTCY
Purpose
agent discovery/delegation
How it fits the stack
Agent interop protocols (A2A / AGNTCY) with what it depends on (above) and what it feeds (below). The figure renders as a crawlable diagram and upgrades to an interactive 3D graph as it scrolls into view.
Agent interop protocols (A2A / AGNTCY) in the AI stack. Agent interop protocols (A2A / AGNTCY) with its immediate upstream dependencies (top) and downstream dependents (bottom) in the AI value chain. Hover a node in 3D, or read the full relationships below.
Graph data (text) — 2 entities, 1 relationships
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