Developer Tools

You want to tell an AI “read this file”, “pull that record from my database”, “close this issue”. The model cannot do any of it on its own, because it has no access to your machine, your database or your accounts. MCP exists to close exactly that gap. It puts a standard connection layer between the AI application and the outside world 🔌 What Is MCP? MCP (Model Context Protocol) is an open-source standard for connecting AI applications to external systems. ...

If you have been using Claude Code for a while you have definitely run into three terms: skill, subagent and hook. All three live under “customizing Claude Code” and at first glance they look like they do the same job. They don’t. Each solves a different problem, and picking the wrong one means either needless complexity or a setup that never fires 🛠️ The Short Answer The decision rule Skill: when you keep writing the same instructions over and over Subagent: when a job produces so much output it floods your main conversation Hook: when you need a rule to hold without exception Slash Commands Are Skills Now The biggest change first, because most older guides miss it: custom slash commands have been merged into skills. ...