<img src="https://i.postimg.cc/Jh3kCJ8y/Logo.png" alt="logo" width="320" height="320" /><br /><br /><iframe allowfullscreen="allowfullscreen" src="https://www.youtube.com/embed/zFV0oPClodI?wmode=transparent" height="358" width="638"></iframe><br /><br />I&rsquo;ve built a&nbsp;server-authoritative currency system&nbsp;for multiplayer Minecraft servers.<br /><br /><br />Coins are numeric, stored per player server-side (can&rsquo;t be spoofed client-side).<br /><br />Admins define exchange rates<br /><br /><br />

It works with weird denomination sets where greedy would fail
It uses what the player actually has
Players can exchange items into coins using a smart bounded knapsack solver
It gets as close as possible to the requested value without going over
Players can pay each other, and admins can mint coins.
Rates are world-persistent, viewable by players, removable by admins, and now hardened to avoid legacy ID issues.

<br /><br /><br />Commands<br /><br />

Admin / OP Commands (Requires Permission Level 2)

Command	Syntax	Expected Result
Quick Set (Hand)	`/coinhand [value]`	If value is empty: identifying the item ID in your hand. If value is set: Sets the exchange rate for the item currently in your main hand. Useful for mod items with complex IDs.
Set Rate	`/coinrate <id> <val>`	Sets the value of a specific item ID manually. Fix Applied: Case-insensitive.`simcraft:Silver`now automatically becomes`simcraft:silver`.
Unset Rate	`/coinrateunset <id>`	Removes the exchange rate for a specific item. Example:`/coinrateunset minecraft:dirt`
Mint Coins	`/mintcoins <player> <val>`	Creates new coins out of thin air and adds them to the target player's balance.

Command	Syntax	Expected Result
Check Balance	`/coins`	Displays your current coin balance (e.g.,`Coins: 150`
View Rates	`/coinrates`	Lists all active exchange rates configured on the server. Sorted by value (highest first).
Search Items	`/coinsearch <text>`	Searches the internal item registry for matches. Cross-Mod Example:`/coinsearch silver`will now list`simcraft:silver_ingot`,`simcraft:silver_nugget`, etc.
Pay Player	`/pay <player> <amount>`	Transfers coins from your balance to theirs. Fails if you don't have enough coins.
Exchange	`/exchange <amount>`	Calculates the best combination of items in your inventory to equal`<amount>`coins, removes them, and credits you. Returns change if exact change isn't possible.

<br /><br /><br /><br /><br />Simcraft Economy&nbsp;is a&nbsp;flexible, server-authoritative economy mod&nbsp;built for real multiplayer servers &mdash; not singleplayer toys.<br /><br /><br />Define any item (vanilla or modded) as a denomination, set its value, and let players exchange inventory items into coins using an&nbsp;optimal &ldquo;closest-without-overpaying&rdquo; exchange algorithm. No fixed &ldquo;one item = one trade&rdquo; nonsense. No client spoofing. Just clean, configurable money for modpacks and survival servers.<br /><br /><br />Perfect for:

SMP economies
modpacks with custom materials
trading hubs and towns
quest / shop / salary systems
automation + economy servers

<br />Highlights<br /><br /><br /><br />✅ Cross-mod support<br /><br /><br />✅ Server-authoritative balances<br /><br /><br />✅ Smart exchange picks the best combo from your inventory<br /><br /><br />✅ Player payments + admin minting<br /><br /><br />✅ Rates are persistent + viewable in-game

Simcraft - Economy