Essential Claude Commands to Enhance Your AI Programming Experience

Many users have successfully installed Claude Code following online tutorials. However, when they first interact with it, they often encounter issues such as inconsistent context retention and confusion between projects. This can lead to the feeling that while Claude Code is installed, it isn’t being used effectively.

In reality, many beginners struggle not with asking questions, but with unfamiliarity with some basic yet crucial commands in Claude Code. Here are a few commands that newcomers should master:

1. /clear: The Underestimated “Restart”

The /clear command is one of the most underrated commands. Its function is simple: clear the current conversation context and start anew.

Many users have a habit of asking all their questions in a single chat window. In a typical chat application, this isn’t a major issue. However, in a project-oriented environment like Claude Code, the influence of prior context is significant.

For example, if you have a bug in one project that Claude Code has been trying to fix, and you start a new project without clearing the context, it may carry over assumptions and errors from the previous project. This can feel like the bug from the last project has become a ghost that haunts the new one.

So, if you are switching projects or tasks, remember to use:

/clear

Suitable Scenarios for Using /clear

Starting a completely new project.
When your current thought process is confused.
Claude Code is repeatedly going in the wrong direction.
You notice it is referencing old project information.
You want to redefine your requirements from scratch.

2. /compact: Actively Compress Context

The /compact command is also very useful. Its purpose is to: compress the current conversation context, retaining key information and reducing context load.

Claude Code will automatically compress context at certain times, but this often doesn’t align with when you actually need it. For instance, if you are debugging and just pinpointed an issue, an automatic compression might erase crucial details, leading to confusion.

A better approach is to proactively use /compact when your project reaches a stable phase. For example:

The project structure is set up.
Main functionalities are running smoothly.
Current issues have been resolved.
You’re ready to move to the next development stage.
The conversation has become lengthy, but you don’t want to clear all context.

At this point, you can enter:

/compact

Suitable Scenarios for Using /compact

A functional module is completed.
A batch of bugs has been fixed.
Transitioning from development to optimization phase.
The conversation is getting long, and responses are slowing down.
You want to keep project highlights while discarding irrelevant details.

3. /btw: Ask a Side Question Without Disrupting the Main Task

The /btw command is perfect for beginners. It allows you to: ask a temporary side question without affecting the main project context.

For instance, if Claude Code is helping you write code and suddenly uses a method you’re unfamiliar with, you might want to ask:

What does this method mean?
Why introduce this dependency?
Can we swap this library for another?
Why was that piece of code written this way?

If you ask these questions directly in the main conversation, they might be treated as part of the main task, disrupting the flow. Instead, using /btw allows you to clarify without derailing the project.

Suitable Scenarios for Using /btw

Asking about a concept temporarily.
Inquiring why a specific dependency is used.
Understanding the function of a piece of code.
Asking a small question that doesn’t impact the current task.
Learning Claude Code’s reasoning without disrupting the project context.

4. /model: Switch Models for Different Tasks

The /model command is used to switch models. Many users default to one model after installing Claude Code, which is fine, but mastering model switching can lead to cost savings and efficiency.

Different tasks require different model capabilities. Some tasks don’t need the most powerful model. Here’s a simple selection guide:

Haiku: Fast and economical, suitable for simple tasks.
Sonnet: Balanced, ideal for most daily development.
Opus: Powerful but more expensive, best for complex and critical tasks.

You can switch models using:

/model

My Recommendation

Most of the time, start with Sonnet as your default. Use Haiku for simple tasks and switch to Opus for complex tasks, critical points, or tricky bugs. This way, you can manage costs while ensuring quality for key tasks.

5. /resume: Don’t Panic if the Window Closes

When using terminal tools, the biggest fear isn’t errors but losing your session. For example:

Accidentally closing the terminal.
Power outages.
System reboots.
Remote connections dropping.
Wanting to continue a project the next day.

Many beginners think they have to start over, but you can use:

/resume

This command helps you recover the last conversation, allowing Claude Code to continue from where you left off. This is crucial for project development, as it retains your project directory, goals, previous edits, and current issues.

Suitable Scenarios for Using /resume

The terminal unexpectedly closes.
Power or system issues occur.
Continuing a project from the previous day.
Wanting to retrieve the last development context.
Not wanting to re-explain project background.

However, if you’ve decided to switch projects or if the last conversation was chaotic, it’s better to use /clear to start fresh.

Conclusion

Using Claude Code feels like chatting with an AI in a terminal. However, it differs from regular chatbots. You shouldn’t treat it merely as a Q&A tool; instead, view it as a project assistant. The key to effective use lies in managing context:

/clear for starting over.
/compact for periodic organization.
/btw for temporary inquiries.
/model for switching between capabilities and costs.
/resume for recovering previous work.