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GuideAI DevelopmentApr 29, 2026

Claude secret codes!

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A thorough walkthrough of the Claude Code commands and features that most developers never fully explore. Covers /project, /compact, /memory, agent mode, and CLAUDE.md with clear explanations of how each one works and when to use it.

What's inside
  • The most powerful slash commands most developers never use
  • How /memory and CLAUDE.md persist context across sessions
  • Agent mode: what it is and exactly when to use it
  • /compact and /project for managing long sessions
  • Hidden shortcuts that cut your prompting time in half

There's More to Claude Code Than Most People Use

Most developers open Claude Code, type a question, and that's about it. But there's a full command system built in that the majority of users never come across.

Once you start using these properly, working without them feels noticeably slower. Not because they're flashy, but because they solve real problems that come up every single day.


The Commands That Actually Change How You Work

/project lets you set context that loads automatically at the start of every session. Your stack, your standards, your architectural decisions — Claude knows all of it before you type a single word.

/compact compresses long sessions without losing what matters. Most people never use it and wonder why things slow down after 30 messages. /memory carries your preferences and decisions across sessions, across projects, and across devices.

Each one takes a minute to set up and pays off every day after that.


What the Guide Covers

The full guide goes through each command properly, shows you what agent mode actually does and when to use it, and walks through CLAUDE.md — the file that makes Claude understand your project from the very first message of every session.

A few things in there will genuinely surprise you.


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