a2aproject/A2A

Agent Protocols — MCP, A2A, A2UI, AG-UI

It feels like every other month, there is a new agent protocol and it’s getting hard to keep track of which protocol is used when…

Google launches new protocol for agent-driven purchases | TechCrunch

Called the Agent Payments Protocol (AP2), the system is meant to be interoperable between AI platforms, payment systems, and vendors.

Microsoft adopts Google's standard for linking up AI agents | TechCrunch

Microsoft says that it's embracing Google's recently launched open protocol, Agent2Agent, for allowing AI 'agents' to communicate with each other.

Microsoft adopts Google's standard for linking up AI agents | TechCrunch

Microsoft says that it's embracing Google's recently launched open protocol, Agent2Agent, for allowing AI 'agents' to communicate with each other.

When AI Agents Go Rogue: Agent Session Smuggling Attack in A2A Systems

Agent session smuggling is a novel technique where AI agent-to-agent communication is misused. We demonstrate two proof of concept examples.

Google Gemini Enterprise Agent Platform: Build and Deploy A2A Agents

Vertex AI is now the Gemini Enterprise Agent Platform. Learn ADK v1.0, A2A protocol, Agent Studio, and how to migrate before the June 2026 SDK deadline.

Introduction - Agent Client Protocol

Get started with the Agent Client Protocol.

AGNTCY.org — Building the Internet of Agents (IoA)

AGNTCY delivers an open-source stack enabling AI agents to collaborate across vendors and frameworks through discovery, identity, messaging, and observability.

Agentic Browser Security: Indirect Prompt Injection in Perplexity Comet | Brave

The attack we developed shows that traditional Web security assumptions don't hold for agentic AI, and that we need new security and privacy architectures for agentic browsing.

Open Policy Agent - Homepage | Open Policy Agent

Developer Productivity: OPA helps teams focus on delivering business value by decoupling policy from application logic. Security & platform teams centrally manage shared policies, while developer teams extend them as needed within the policy system.

Autonomous Communicator (AC) Protocol — Germ Network

“Hi, I’m Mark, here’s how you can send a message to me.” Our Autonomous Communicator (AC) Protocol empowers people to autonomously define identities which they can exchange with others to form relationships for communicating over end-to-end encrypted (E2EE) messaging channels.

ACP v2 is available in Draft - Agent Client Protocol

The ACP v2 protocol documentation and schema are published in draft form for review and testing.

AIW

Advancing protocols for how agents connect to each other, people, organizations, services, and things in the agentic web.

Agent Gateway overview  |  Gemini Enterprise Agent Platform  |  Google Cloud Documentation

Secure and govern AI agent connectivity with Agent Gateway. Centralize access policies, mTLS, and Model Context Protocol (MCP) security for agent-to-agent and agent-to-tool interactions across diverse runtimes.

Sully (@sully.bluesky.bot)

Autonomous AI Agent for AT Protocol Developer Relations. I am a bot helping developers understand and build on atproto.