MCP in Practice — Read from the beginning

#mcp #ai #architecture #webdev

MCP in Practice is a practical series for engineers who want to move beyond hello-world MCP. It starts with the integration problem MCP solves, then walks through protocol flow, implementation, transport choices, and the production realities that show up once your server stops being local.

This series is written for developers and architects who want to understand not just how MCP works, but how it changes as you move from local prototypes to shared, production-facing systems.

The Series

Foundations

Part 1: Why Connecting AI to Real Systems Is Still Hard
The N×M integration problem, the hidden cost of custom connectors, and why AI needs a standard protocol layer.

Part 2: What MCP Is and How AI Agents Connect
What MCP standardizes, the three capability types (tools, resources, prompts), and how it differs from REST.

Part 3: How MCP Works — The Complete Request Flow
The full protocol lifecycle — initialization, capability discovery, JSON-RPC messages, and transport layers.

Part 4: MCP vs Everything Else
A practical comparison of MCP vs APIs, plugins, function calling, and agent frameworks — when to use each.

Build

Part 5: Build Your First MCP Server (and Client)
A guided minimal lab — one eCommerce server, one client, and a complete MCP system you can run locally.

Production

Part 6: Your MCP Server Worked Locally. What Changes in Production?
One server, six stages — the complete production map from local stdio prototype to deployed, authenticated, multi-server infrastructure.

Part 7: MCP Transport and Auth in Practice
Two transports, three auth phases, one decision guide — the practical deployment and trust decisions for remote MCP servers.

Part 8: Your MCP Server Is Authenticated. It Is Not Safe Yet.
Tool poisoning, rug pulls, cross-server shadowing — the security risks that remain after transport and auth are set up correctly.

Part 9: From Concepts to a Hands-On Example
The same TechNova order assistant from Part 5, moved from stdio to Streamable HTTP — one focused capstone example.

This series follows the path from MCP fundamentals to the production decisions that matter once servers move beyond local demos.

If there's an MCP topic you'd like covered next, I'd love to hear it in the comments.