A command handler for hikari with a focus on type-safety and correctness.

To install arc, run the following command:

pip install -U hikari-arc

To check if arc has successfully installed or not, run the following:

python3 -m arc
# On Windows you may need to run:
py -m arc

If you're just getting started, you may also use the template repository to get started with.

import hikari
import arc

bot = hikari.GatewayBot("TOKEN") # or hikari.RESTBot
client = arc.GatewayClient(bot) # or arc.RESTClient

@client.include
@arc.slash_command("hi", "Say hi!")
async def ping(
    ctx: arc.GatewayContext,
    user: arc.Option[hikari.User, arc.UserParams("The user to say hi to.")]
) -> None:
    await ctx.respond(f"Hey {user.mention}!")

bot.run()

To get started with arc, see the documentation, or the examples.

For general usage help or questions, see the hikari discord, if you have found a bug or have a feature request, feel free to open an issue!

See Contributing.

arc is in large part a combination of all the parts I like in other command handlers, with my own spin on it. The following projects have inspired me and aided me greatly in the design of this library:

• hikari-lightbulb - The library initially started as a reimagination of lightbulb, it inherits a similar project structure and terminology.
• Tanjun - For the idea of using typing.Annotated and dependency injection in a command handler. arc also uses the same dependency injection library, Alluka, under the hood.
• hikari-crescent The design of hooks is largely inspired by crescent.
• FastAPI - Some design ideas and most of the documentation configuration derives from FastAPI.

• Documentation
• Examples
• License