DEEP EXPLANATION

What is the Model Context Protocol (MCP)? (SOLVED)

Model BasedMCPEasy8 min read

The Model Context Protocol is Anthropic's open standard reshaping how LLMs connect to tools and data. If you're interviewing for Claude ecosystem roles or AI platform engineering, expect MCP questions. Understand host vs server architecture and how MCP differs from ad-hoc function calling.

MCP · Fundamentals

TL;DR — Quick Answer

MCP is an open protocol for connecting LLMs to external data sources and tools via a standardized client-server architecture.

The Interview Question

Explain MCP and how it standardizes tool/context integration for LLM applications.

Deep Explanation

MCP defines how AI applications (hosts) connect to MCP servers that expose resources, prompts, and tools. Benefits: interoperability, security boundaries, and reusable integrations across Claude Desktop, IDEs, and custom apps.

Servers can expose file systems, databases, APIs as structured tool definitions the model can invoke.

Model Context Protocol Architecture

Host connects to MCP servers exposing tools and resources

Real-World Examples

MCP server exposing GitHub issues to an IDE assistant
Database MCP server for SQL queries

Common Mistakes

Confusing MCP with function calling alone
Not understanding host vs server roles

What Interviewers Expect

✓Protocol purpose and architecture
✓Real-world integration examples

Follow-Up Questions

How would you build a custom MCP server?
MCP vs traditional REST API tool wrappers?

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