If your AI agents can’t coordinate across vendors, every automation you build hits a wall the moment it needs to leave one ecosystem.

Every multi-agent workflow today requires custom glue code nobody has time to write

Right now, connecting an AI agent from one vendor to another means writing bespoke integration code for every handoff. Teams building enterprise automations burn weeks on plumbing that has nothing to do with the actual task being automated.

Google shipped a spec, a dev kit, and a partner list in one announcement

[AINews] Google’s Agent2Agent Protocol (A2A) defines a structured communication layer where agents exchange Tasks, pass Messages, and return Artifacts, with built-in enterprise auth, observability hooks, and streaming support. You work with the Agent Development Kit to build agents that publish an Agent Card, making them discoverable and callable by any other compliant agent. The protocol is designed to sit alongside Anthropic’s MCP rather than replace it, with MCP handling tool-use and Agent2Agent handling agent-to-agent delegation.

Infrastructure engineers are the first to feel the weight of this

• Enterprise architects designing multi-vendor AI pipelines who need a vendor-neutral handoff standard that won’t require rebuilding when a vendor changes its API
• AI engineers at product companies who are building autonomous workflows and need push notifications and streaming baked into the coordination layer, not bolted on after
• Platform teams at large organizations who need audit trails and auth controls across agents they did not build and do not fully control

The timing is not accidental.

Google moved first on interoperability before OpenAI set the default

With over 50 named launch partners already committed to Agent2Agent, Google is making a bet that whoever owns the coordination layer owns the enterprise AI stack. If this spec gains adoption the way HTTP or OAuth did in prior infrastructure cycles, every agent platform built without it will need a retrofit.

• Build agents that delegate subtasks to specialized remote agents automatically
• Publish an Agent Card so other systems can discover and call your agent
• Wire in enterprise auth and observability without custom middleware
• Combine with MCP tools to cover both tool-use and agent delegation in one stack

Pricing not listed — check our directory.

The spec is still a draft, and real-world interoperability across partners has not been stress-tested at production scale yet.

Anthropic’s MCP covers tool-use for single agents and is already in production at several major platforms. Microsoft’s AutoGen addresses multi-agent coordination but stays inside the Microsoft ecosystem rather than targeting cross-vendor interoperability.

The agent coordination layer is being standardized right now, while most teams are still watching

This is the kind of infrastructure shift that looks obvious in hindsight and invisible in the moment. We cover tools like this every Friday — subscribe here and we’ll send the best ones straight to you.