diff --git a/java/noppes/npcs/api/event/IAuctionEvent.java b/java/noppes/npcs/api/event/IAuctionEvent.java
new file mode 100644
index 0000000..8da9c3e
--- /dev/null
+++ b/java/noppes/npcs/api/event/IAuctionEvent.java
@@ -0,0 +1,75 @@
+package noppes.npcs.api.event;
+
+import cpw.mods.fml.common.eventhandler.Cancelable;
+import noppes.npcs.api.handler.data.IAuctionClaim;
+import noppes.npcs.api.handler.data.IAuctionListing;
+import noppes.npcs.api.item.IItemStack;
+
+/**
+ * Events related to auction actions.
+ * These events are fired when players interact with the auction system.
+ */
+public interface IAuctionEvent extends IPlayerEvent {
+
+    /**
+     * Fired before a player creates a new auction listing.
+     * Cancel to prevent the listing from being created.
+     * The listing fee has NOT yet been deducted when this fires.
+     *
+     * @hookName auctionCreate
+     */
+    @Cancelable
+    interface CreateEvent extends IAuctionEvent {
+        IItemStack getItem();
+        long getStartingPrice();
+        long getBuyoutPrice();
+    }
+
+    /**
+     * Fired before a player places a bid on an auction.
+     * Cancel to prevent the bid from being placed.
+     * Currency has NOT yet been deducted when this fires.
+     *
+     * @hookName auctionBid
+     */
+    @Cancelable
+    interface BidEvent extends IAuctionEvent {
+        IAuctionListing getListing();
+        long getBidAmount();
+    }
+
+    /**
+     * Fired before a player buys out an auction.
+     * Cancel to prevent the buyout.
+     * Currency has NOT yet been deducted when this fires.
+     *
+     * @hookName auctionBuyout
+     */
+    @Cancelable
+    interface BuyoutEvent extends IAuctionEvent {
+        IAuctionListing getListing();
+    }
+
+    /**
+     * Fired before a player cancels an auction listing.
+     * Cancel to prevent the cancellation.
+     *
+     * @hookName auctionCancel
+     */
+    @Cancelable
+    interface CancelEvent extends IAuctionEvent {
+        IAuctionListing getListing();
+        boolean isAdmin();
+    }
+
+    /**
+     * Fired before a player claims an item or currency from an auction.
+     * Cancel to prevent the claim.
+     *
+     * @hookName auctionClaim
+     */
+    @Cancelable
+    interface ClaimEvent extends IAuctionEvent {
+        IAuctionClaim getClaim();
+    }
+}