Stephen Downes

This article announces Agent2Agent (A2A), Google's new open protocol supporting interoperable AI solutions. According to Google, "A2A is an open protocol that complements Anthropic's Model Context Protocol (MCP), which provides helpful tools and context to agents... A2A empowers developers to build agents capable of connecting with any other agent built using the protocol and offers users the flexibility to combine agents from various providers." The article lists a set of A2A design principles and describes briefly how it works (as illustrated) and offers a "real world" example in the form of "candidate sourcing" (video). "Read the full specification draft, try out code samples, and see example scenarios on the A2A website". More: Awesome A2A with examples and a list of frameworks, utilities and server implementations.