What I'm Learning

These are my notes from working through it — what MCP actually is, how the wire protocol is shaped, what the primitives mean in practice, and where the protocol is heading.
## What MCP is
MCP is an open protocol that standardizes how LLM applications connect to tools and data sources. The pitch is one analogy: REST standardized how web apps talk to backends, LSP standardized how IDEs talk to language tooling, MCP standardizes how AI applications talk to external systems.

**Agent interoperability is the latest buzz in town.** First, it was MCP (Model Context Protocol) from Anthropic, and now, with the latest announcement (April 9) of Google's A2A (Agent2Agent) protocol, it seems there's a growing push toward establishing interoperability standards.
**But why?**
The concept of agent interoperability definitely holds promise. Agreeing upon a standard data exchange format between different products and platforms — each exposing their capabilities as agents — would allow seamless integration into each other's ecosystems and enable open communication.