Topic
Agent-to-Agent (A2A) Communication Protocols
12 posts on agent-to-agent (a2a) communication protocols — part of ai agents & automation on the n4n AI blog.
When to use A2A instead of a shared agent framework
Practical guide to when to use A2A protocol vs a shared agent framework: actionable steps, code samples, and tradeoffs for LLM engineers.
Linux Foundation and the future of the A2A protocol
Analyzing the Linux Foundation's stewardship of the A2A protocol: what it standardizes, governance tradeoffs, and how engineers should architect agent meshes.
How enterprises are adopting the A2A protocol in 2026
Analysis of how enterprises are adopting the A2A protocol in 2026: selective interoperability, agent cards, tradeoffs, and a reference architecture for engineers.
How Agent2Agent (A2A) enables multi-agent collaboration
A practical guide to building agent2agent multi-agent collaboration with the A2A protocol: agent cards, task delegation, failure handling, and observability.
Connecting LangGraph agents over A2A
Step-by-step tutorial for langgraph a2a integration: build two LangGraph agents that communicate over a minimal HTTP Agent-to-Agent protocol with runnable code.
A2A vs ACP: comparing agent communication protocols
A practical engineer's comparison of a2a vs acp protocol for LLM agents across capabilities, cost, latency, ergonomics, and ecosystem, with a clear verdict.
A2A task lifecycle: states, artifacts, and streaming
Defines the a2a task lifecycle: the state machine, artifacts, and streaming model that let autonomous agents coordinate work reliably over the A2A protocol.
A2A agent cards explained: capability discovery
A2A agent cards are machine-readable manifests that let AI agents discover each other's capabilities over HTTP. Learn the spec, examples, and pitfalls.
What is Google's Agent2Agent (A2A) protocol?
Engineer-focused explainer of Google's Agent2Agent (A2A) protocol: how it works, why it matters, a concrete example, and common misconceptions.
Building your first A2A-compliant agent
Hands-on tutorial to build a2a agent compliant with the Agent-to-Agent protocol: serve an agent card, handle JSON-RPC tasks, and test with a client.
A2A vs MCP: agent-to-agent vs agent-to-tool protocols
A practical engineer's comparison of A2A vs MCP: how agent-to-agent and agent-to-tool protocols differ in capabilities, latency, ergonomics, and ecosystem.
A2A protocol security: authentication between agents
A practical guide to a2a protocol security: implement authentication between agents using signed tokens, mTLS, OAuth2, and scoped API credentials.
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