MCP vs. Agent Skills: What's the Difference and Which Do You Need?
As AI agents evolve beyond basic chat interfaces into fully autonomous systems, developers keep hitting the same architectural decision: how do we actually extend what an agent can do?
Two concepts dominate that conversation right now — Model Context Protocol (MCP) and AI Agent Skills (SKILL.md) — and they're routinely discussed as if they're competing options. They aren't. They solve two different problems that only look similar from a distance, and picking the wrong one for the job is one of the more common ways teams burn a sprint building an agent that's either disconnected from reality or has no idea what to do once it's connected.
Here's the actual distinction, how each one works under the hood, and a framework for knowing which one — or both — your next agent build actually needs.
The core concept: a badge versus a playbook
