KoDS Bot

KoDS is a Discord bot built for an RPG game-based guild of more than 300 members. What started as a handful of utility commands turned into the guild’s system of record: who you are, what you own, and how much everyone else trusts you.

What it does

Profiles. Every member gets a persistent profile — a bio, a status line, and a set of stats that other systems read from and write to.

Inventory. Items can be granted, traded and consumed. The interesting part was making transfers atomic: two members trading simultaneously should never be able to duplicate an item, which meant pushing the read-modify-write into a single database operation rather than doing it in application code.

Reputation. Members award reputation to each other, with cooldowns and self-award guards so the numbers stay meaningful.

Moderation and tags. A tag system for canned responses the guild kept retyping, plus the usual moderation surface so admins do not need a second bot.

Notes

The command surface grew faster than the original single-file design could take, so commands moved into cogs grouped by domain. That change made it possible to reload one subsystem at a time during development instead of restarting the bot and dropping every in-flight interaction.

Rate limits shaped more of the design than I expected. Anything that fanned out across members had to be batched and backed off, or Discord would simply stop answering.