package reborncore.api;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

/**
 * Added onto an item
 */
public interface IToolHandler {

	/**
	 * Called when a machine is actived with the item that has IToolHandler on it
	 *
	 * @param stack the held itemstack
	 * @param pos the pos of the block
	 * @param world the world of the block
	 * @param player the player that actived the block
	 * @param side the side that the player actived
	 * @param damage if the tool should be damged, or power taken
	 * @return If the tool can handle being actived on the block, return false when the tool is broken or out of power for example.
	 */
	boolean handleTool(ItemStack stack, BlockPos pos, World world, EntityPlayer player, EnumFacing side, boolean damage);

}

package reborncore.api;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

/**
 * Added onto an item
 */
public interface IToolHandler {

	/**
	 * Called when a machine is actived with the item that has IToolHandler on it
	 *
	 * @param pos the pos of the block
	 * @param world the world of the block
	 * @param player the player that actived the block
	 * @param side the side that the player actived
	 * @param damage if the tool should be damged, or power taken
	 * @return If the tool can handle being actived on the block, return false when the tool is broken or out of power for example.
	 */
	boolean handleTool(BlockPos pos, World world, EntityPlayer player, EnumFacing side, boolean damage);

}

--- 
+++ 
@@ -1,6 +1,7 @@
 package reborncore.api;
 
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.item.ItemStack;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
@@ -13,6 +14,7 @@
 	/**
 	 * Called when a machine is actived with the item that has IToolHandler on it
 	 *
+	 * @param stack the held itemstack
 	 * @param pos the pos of the block
 	 * @param world the world of the block
 	 * @param player the player that actived the block
@@ -20,6 +22,6 @@
 	 * @param damage if the tool should be damged, or power taken
 	 * @return If the tool can handle being actived on the block, return false when the tool is broken or out of power for example.
 	 */
-	boolean handleTool(BlockPos pos, World world, EntityPlayer player, EnumFacing side, boolean damage);
+	boolean handleTool(ItemStack stack, BlockPos pos, World world, EntityPlayer player, EnumFacing side, boolean damage);
 
 }
Add the stack as it might be useful  :P
