# MCP Clearly Explained

DevFeed: [MCP Clearly Explained](<https://devfeed.tech/articles/mcp-clearly-explained-18031.md>)

Original publisher: [Read original article](<https://blog.levelupcoding.com/p/mcp-clearly-explained>)

Author: Nikki Siapno

Published: 2026-06-15T12:57:01Z

Content type: tutorial

Language: en

Sources: [Level Up Coding System Design Newsletter](<https://devfeed.tech/sources/level-up-coding-system-design-newsletter.md>)

Topics: [Model Context Protocol (MCP)](<https://devfeed.tech/topics/model-context-protocol-mcp.md>), [AI Engineering](<https://devfeed.tech/topics/ai-engineering.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>), [client](<https://devfeed.tech/topics/client.md>), [Server](<https://devfeed.tech/topics/server.md>)

Tags: [ai-engineering](<https://devfeed.tech/tags/ai-engineering.md>), [coding-assistant](<https://devfeed.tech/tags/coding-assistant.md>), [integration](<https://devfeed.tech/tags/integration.md>), [model-context-protocol-mcp](<https://devfeed.tech/tags/model-context-protocol-mcp.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [server](<https://devfeed.tech/tags/server.md>), [tool](<https://devfeed.tech/tags/tool.md>)

## AI overview

A beginner-friendly explanation of Model Context Protocol (MCP), a standard interface that lets AI applications communicate with external services. It describes MCP's purpose, core roles, capability discovery, data requests, action invocation, session establishment, and compatibility features.

## Source excerpt

Plus: Big upgrades are coming to LUC. Vote on what you'd like to see first.