Install Auction House

Requirements

Requirement	Details
Server	Paper or Folia 26.1 or newer
Java	Java 25
Vault + economy plugin	Required. Items are bought and sold with your server’s money (EssentialsX, CMI, ...).
Internet on first start	Auction House downloads its libraries once through the server’s library loader: Kotlin, HikariCP, the SQLite, MySQL and MariaDB drivers, the MongoDB driver and Jedis for Redis.
PlaceholderAPI	Optional. Enables the Auction House placeholders and placeholders inside messages.
Nexo, Oraxen, ItemsAdder	Optional. Their custom items can be searched for and blacklisted by ID.

Single server

Install Vault and an economy plugin if the server doesn’t have them yet.
Place AuctionHouse-1.0.0.jar in the plugins folder.
Start the server once so the default files are created, then stop it.
Paste your license key into license-key in plugins/AuctionHouse/config.yml.
Start the server. The console shows License verified with the product and version.
Hold an item and run /ah sell 100, then open /ah.

No economy found

Without Vault and an economy plugin nobody can buy or sell. Install both and restart.

Several servers

Set type: under storage: to mysql, mariadb or mongodb on every server and point them at the same database. Turn on network with a Redis server so listings, payouts and messages reach the other servers right away. See Cross-server.

Created files

File	Purpose
`config.yml`	License key, storage, network, listing rules, Quick Buy and the blacklist.
`menus.yml`	Every menu, button, slot, sound and dialog text.
`messages.yml`	Every chat and action bar message.
`slang.yml`	Short names for search.
`auctions.db`	The SQLite database, when `type: sqlite` under `storage:` is set.
`logs/`	A daily log of every listing, purchase, cancel and expiry.
`.installation-id`, `.installation-v2.key`	Identify this server for the license. Don’t delete or copy them.