The Agent Extension Stack: Skills, Plugins, MCP, and Tools
A Skill teaches an agent how to work, a Tool lets it act, MCP connects it to external capabilities, and a Plugin packages the pieces for installation.
Tag
Developer practice
What Pi Coding Agent Keeps in the Core
A source-based comparison of Pi, Codex, and OpenCode shows how a minimal coding harness leaves workflow policy and isolation to the user.
Inside Matt Pocock's Skills: Where the Control Lives
A commit-pinned reading of the Matt Pocock Skills repository shows how its invocation rules keep workflow direction with the human while the host retains tools and permissions.
From Superpowers to Skills: What Changed with GPT-5.6
After moving to GPT-5.6, I began choosing smaller agent workflows and paying more attention to the loop that decides what happens next.
How Skills Are Changing the Way I Work with Agents
Reusable skills are helping me give agents clearer working context, spend less time repeating process, and keep the important decisions reviewable.