protocols

2 articles tagged protocols.

A single thin horizontal line with its middle section drawn in burnt orange, marking the revision boundary that splits MCP into two incompatible eras

MCP Backward Compatibility: What Still Talks to What

MCP revision 2026-07-28 removed the initialize handshake, so a new client cannot talk to an old server. Here is the full compatibility matrix and the probe that settles it.

mcp protocols10 min read

An MCP server answering a tools list request and a tool call from one agent client over two transports

What Is an MCP Server, and How Does It Work?

An MCP server exposes tools, resources and prompts to an AI app over JSON-RPC 2.0. Here is what that means in practice, and why an MCP badge in a README proves nothing.

mcp protocols9 min read