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The commands extension provides a powerful framework for creating command-based bots, similar to discord.py’s commands extension.

​
Basic setup

Import and create a bot instance: 
from rebootpy.ext import commands
import rebootpy

bot = commands.Bot(
    command_prefix='!',
    auth=rebootpy.AdvancedAuth()
)

​
Creating commands

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Simple commands

Use the @bot.command() decorator to create commands: 
@bot.command()
async def ping(ctx):
    await ctx.send('Pong!')
Users can invoke this with !ping in either friend or party messages.

​
Commands with arguments

Commands can accept arguments: 
@bot.command()
async def say(ctx, *, message):
    await ctx.send(message)

@bot.command()
async def add(ctx, a: int, b: int):
    result = a + b
    await ctx.send(f'{a} + {b} = {result}')
The * in *, message means all remaining text becomes the message argument.

​
Command aliases

Add aliases for commands: 
@bot.command(aliases=['p'])
async def ping(ctx):
    await ctx.send('Pong!')
Now both !ping and !p work.

​
Command groups

Organize related commands into groups: 
@bot.group()
async def party(ctx):
    if ctx.invoked_subcommand is None:
        await ctx.send(f'Party size: {bot.party.member_count}')

@party.command()
async def privacy(ctx, privacy: str):
    if privacy.lower() == 'public':
        await bot.party.set_privacy(rebootpy.PartyPrivacy.PUBLIC)
        await ctx.send('Party is now public')
    elif privacy.lower() == 'private':
        await bot.party.set_privacy(rebootpy.PartyPrivacy.PRIVATE)
        await ctx.send('Party is now private')

@party.command()
async def kick(ctx, member_name: str):
    member = bot.party.get_member(member_name)
    if member:
        await member.kick()
        await ctx.send(f'Kicked {member.display_name}')
    else:
        await ctx.send('Member not found')
Use: !party, !party privacy public, !party kick Username

​
Checks

Restrict who can use commands: 
@bot.command()
@commands.dm_only()
async def secret(ctx):
    await ctx.send('This only works in DMs!')

@bot.command()
@commands.party_only()
async def partyinfo(ctx):
    await ctx.send(f'Party size: {ctx.party.member_count}')

@bot.command()
@commands.is_owner()
async def shutdown(ctx):
    await ctx.send('Shutting down...')
    await bot.close()

​
Custom checks

Create custom check functions: 
def is_friend(ctx):
    return ctx.author in bot.friends

@bot.command()
@commands.check(is_friend)
async def friendonly(ctx):
    await ctx.send('You are my friend!')

​
Cooldowns

Prevent command spam: 
from rebootpy.ext.commands import BucketType

@bot.command()
@commands.cooldown(rate=1, per=60.0, bucket=BucketType.user)
async def stats(ctx):
    # This can only be used once per minute per user
    stats = await ctx.author.fetch_br_stats()
    await ctx.send(f'Wins: {stats.get_stats()["wins"]}')

​
Error handling

Handle command errors: 
@bot.event
async def event_command_error(ctx, error):
    if isinstance(error, commands.CommandNotFound):
        await ctx.send('Command not found!')
    elif isinstance(error, commands.MissingRequiredArgument):
        await ctx.send(f'Missing required argument: {error.param.name}')
    elif isinstance(error, commands.CommandOnCooldown):
        await ctx.send(f'Command on cooldown. Try again in {error.retry_after:.1f}s')
    else:
        await ctx.send(f'An error occurred: {error}')
You can also add error handlers to specific commands: 
@bot.command()
async def divide(ctx, a: int, b: int):
    result = a / b
    await ctx.send(f'{a} / {b} = {result}')

@divide.error
async def divide_error(ctx, error):
    if isinstance(error, ZeroDivisionError):
        await ctx.send('Cannot divide by zero!')
    elif isinstance(error, commands.BadArgument):
        await ctx.send('Please provide valid numbers')

​
Converters

Automatically convert arguments: 
@bot.command()
async def invite(ctx, friend: commands.FriendConverter):
    # friend is automatically converted from name to Friend object
    await friend.invite()
    await ctx.send(f'Invited {friend.display_name}')

@bot.command()
async def kick(ctx, member: commands.PartyMemberConverter):
    # member is automatically converted to PartyMember object
    await member.kick()
    await ctx.send(f'Kicked {member.display_name}')

​
Custom converters

class OutfitConverter(commands.Converter):
    async def convert(self, ctx, argument):
        # Convert outfit name/ID to full CID
        if argument.startswith('CID_'):
            return argument
        return f'CID_{argument}_Athena_Commando_M'

@bot.command()
async def outfit(ctx, outfit: OutfitConverter):
    await ctx.me.set_outfit(outfit)
    await ctx.send(f'Set outfit to {outfit}')

​
Before and after hooks

Run code before or after commands: 
@bot.before_invoke
async def before_any_command(ctx):
    print(f'{ctx.author.display_name} used {ctx.command.name}')

@bot.after_invoke
async def after_any_command(ctx):
    print(f'{ctx.command.name} finished')

# Or per-command:
@bot.command()
async def special(ctx):
    await ctx.send('Special command')

@special.before_invoke
async def before_special(ctx):
    await ctx.send('Running special command...')

​
Context object

The ctx parameter provides useful information: 
@bot.command()
async def info(ctx):
    await ctx.send(f'Author: {ctx.author.display_name}')
    await ctx.send(f'Command: {ctx.command.name}')
    await ctx.send(f'Prefix: {ctx.prefix}')
    await ctx.send(f'Bot: {ctx.bot.user.display_name}')
    
    if ctx.party:
        await ctx.send(f'Party size: {ctx.party.member_count}')
    
    if ctx.friend:
        await ctx.send(f'Message from friend: {ctx.friend.display_name}')

​
Best practices

Choose clear, descriptive names for your commands. Users should understand what a command does from its name.
Use docstrings to provide help text:
@bot.command()
async def greet(ctx, name: str):
    """Greet someone by name"""
    await ctx.send(f'Hello, {name}!')
Users can see this with !help greet.
Always implement error handling to provide helpful feedback when things go wrong.
Type hints enable automatic conversion and better error messages:
@bot.command()
async def repeat(ctx, times: int, *, message: str):
    for _ in range(times):
        await ctx.send(message)

​
Next steps

Using cogs

Organize commands into modular cogs

Context reference

Learn about the Context object

Bot API reference

Full Bot class documentation

Command API reference

Detailed command documentation

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