Slash Commands

Slash commands are shortcuts that start with / and perform specific actions inside a Claude Code session. Mains supports both built-in commands and custom commands you define yourself.

Built-in Commands

Command	Description
`/compact`	Summarize and compress conversation history to free up context
`/debug`	Enable debug logging for this session and help diagnose issues (bundled)
`/config`	Open configuration settings
`/simplify`	Review change code for reuse, quality, and efficiency, then fix any issues found
`/loop`	Run a prompt or slash command on a reccuring interval.
`/context`	Show current context usage
`/insights`	Generate a report analyzinf your Claude Code sessions
`/extra-usage`	Configure extra usage to keep working when limits are hit
`/review`	Review a pull request	Review a pull request
`/heapdump`	Dump the JS heap to /Desktop

Custom Commands

Custom commands are Markdown files that define reusable prompts. The filename becomes the command name.

Locations

Location	Scope
`.{your_project}/commands/`	Project commands — shared via git
`~/.claude/commands/`	Personal commands — available across all projects

Creating a Command

Create a .md file in one of the command directories: .{your_project}/commands/review.md:

---
description: Review code changes for issues
allowed-tools: Read, Grep, Glob
---

Review the recent code changes. Check for:
- Security vulnerabilities
- Performance issues
- Missing error handling
Provide findings as a numbered list with severity ratings.

Then invoke it in a session:

/review

Arguments

Commands support positional arguments with $1, $2, etc., and $ARGUMENTS for the full argument string: .{your_project}/commands/fix-issue.md:

---
argument-hint: [issue-number]
description: Fix a GitHub issue
---
Fix issue #$1. Check the issue description and implement the necessary changes.

/fix-issue 142

File References and Shell Output

Commands can include file contents with @ and shell output with !: .{your_project}/commands/commit.md:

---
allowed-tools: Bash(git add:*), Bash(git commit:*)
description: Create a git commit
---
## Context
- Current status: !`git status`
- Current diff: !`git diff HEAD`
## Config
- Package: @package.json
Create a commit with an appropriate message based on the changes.

Namespacing

Organize commands in subdirectories:

.{your_project}/commands/
├── frontend/
│   ├── component.md      # /component
│   └── style-check.md    # /style-check
├── backend/
│   └── api-test.md       # /api-test
└── review.md             # /review

Frontmatter Options

Field	Description
`description`	What the command does (shown in help)
`allowed-tools`	Comma-separated list of tools the command can use
`argument-hint`	Usage hint shown when listing commands
`model`	Override the model for this command

Getting started

Claude Code

Codex

Copilot

Cursor

Core Concepts

Relay

Connections

More

Slash Commands

Built-in Commands

Custom Commands

Locations

Creating a Command

Arguments

File References and Shell Output

Namespacing

Frontmatter Options

​Built-in Commands

​Custom Commands

​Locations

​Creating a Command

​Arguments

​File References and Shell Output

​Namespacing

​Frontmatter Options

Built-in Commands

Custom Commands

Locations

Creating a Command

Arguments

File References and Shell Output

Namespacing

Frontmatter Options