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  • World of Warcraft
  • 464,521 Monthly Downloads
  • Supports: 5.4.8
  • 20,429,047 Total Downloads
  • Updated 08/25/2014
  • Created 06/06/2009
  • 9,616 Favorites
  • Project Site
  • Comments
  • Release Type: Release
  • License: GNU General Public License version 3 (GPLv3)
  • Newest File:
Support development! **

About _NPCScan

_NPCScan tracks seldom-seen rare mobs by proximity alone, making the old “/targetexact …” macros obsolete. It has the same range as those targeting macros, but you won't have to mash any buttons. Just go about your business and let _NPCScan alert you when it finds something.

V5.x Changes
  • Due to changes in how the addon stores data, some settings might get reset when updating.
  • The default alert is suppressed while on flight paths by default. If a mob is found, the whisper sound effect will play and the mob & location will be placed in the chat log. You can turn this off from the settings.
  • _NPCScan now includes all rare mobs in the game.
  • The "One of Many", "Timeless Champion" & "Champions of Lei Shen" Achievements have been added.
  • Rare Mobs and Tameable Mobs have their own tabs now.
  • Custom mobs have been added for the Ghostly Pandaren Fisherman & Craftsman.
  • Individual mobs can be removed from their tabs to stop tracking them.

If you have a question check the FAQ, or a problem create a ticket

If you have a question/comment about _NPCScan.Overlay please post it in it's comment section.



NPCScan now tracks "vignettes". These are the little skulls appear on the minimap, that denote rare mobs. This is a beta feature and is disabled by default. Enabling this feature will alert you to a rare that's within minimap range, without any worries about having to clear your cache. When you get an alert you will be shown a target button similar to the standard mob alert, letting you know that a vignette mob was detected. Clicking on the target button will try and target the mob. Once a mob is targeted, the target button will update to reflect the mob found.

Known Issues: Currently there is no way to detect what mob the vignette represents. Because of this there is no way to filter out and ignore individual mobs. The vignette tracking will ignore achievement mobs groups that have their tracking turned of via unchecking their tab. Also the targeting button might have some issues if there are more than one vignette mobs in target range and may not work 100% of the time.

The Cache

This addon doesn't use nameplates or mouseover units to find rares. Instead, it checks your creature cache for the moment a rare mob is found. There is one catch to this technique however: Once a mob is “found”, _NPCScan won't be able to find it again until your cache is clearedf you find a rare mob's corpse—Dirkee for example—you would have to clear your cache before _NPCScan would find Dirkee again. Thankfully, clearing your cache is a safe and simple matter.

Clearing Your Cache

To clear your cache, follow these straightforward steps:

  1. Exit World of Warcraft
  2. Delete the “Cache” sub-directory inside your World of Warcraft folder.  For example on a standard Windows XP installation, you would delete the folder “C:\Program Files\World of Warcraft\Cache”.
  • Advanced users can delete “C:\Program Files\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb” specifically to improve log-in times, where enUS is your language code.

Note: Windows Vista and Windows 7 users see this info if your cache isn't in the location above.

That's it. Log in after you've done that and you'd be able to find Dirkee a second time. It's completely safe because WoW will recreate your Cache folder after you log in again.

Cache Warning

If a rare mob is already cached when you log in, _NPCScan will print a warning message with the names of those mobs. If you see this message but still want to find the listed NPCs again, it's time to clear your cache by following the above procedure; Otherwise, you can quit searching for those mobs using the Search options window detailed below. You can suppress this log-in message using the main options pane, as well.

“Found” Alert

When a rare mob is found, _NPCScan alerts you by playing a loud and distinctive sound, making your screen pulse red, and displaying an animated Targeting Button. To get a feel for what this alert looks and sounds like, try the “Test Found Alert” button in the addon's main Interface Options panel. (See the Options section below.)

Targeting Button

When clicked, the targeting button tries to target the most-recently-found mob.  You can also bind a key to hit this button. If the default button position isn't to your liking, you can move it while holding your CTRL key.

Note: The button cannot be shown during combat. In the unlikely case that you do find a rare while fighting, the button will appear after you leave combat. You will still hear the alert however, and the name of the mob will appear in your chat log.


_NPCScan's main options window can be accessed from the Interface Options menu. This panel includes a “Test Found Alert” button, various ways to customize the alert sound, and an option to suppress cache warning messages on log-in. New sounds can be added to the alert sound dropdown menu by installing SharedMedia-type addons.

Search List

The list of mobs that _NPCScan searches for can be modified easily through the Interface Options panel, however it comes pre-configured with most rare Outlands and Northrend mobs.; To access the mob list, type “/npcscan”. Grayed out NPCs in a list aren't being searched for, either because they're cached or not needed for their achievement.

The first tab available lists Custom NPCs that you can enter or remove manually. NPCs that are already cached show a red “X” in the first column. You can add or remove Custom NPCs with the [+] and [-] buttons at the bottom right.

All other tabs control achievements like Bloody Rareand Frostbitten. These tabs show an additional column on the right with green check marks for completed achievement mobs. You may enable or disable tracking each achievement with its tab's checkbox.

To remove non custom mobs from a tab, click on the mob that you want to remove and then click on the "Remove" button. This will remove the selected mob from the current tab and add it to the Ignore List Tab. If you ever want to restore a Ignored Mob, select it from the "Ignore List" tab, click the "Remove" button and it should be added back to its original tab.

The “Search for completed Achievement NPCs” checkbox at the top left of the pane allows you to keep looking for mobs you no longer need for achievements.

Finding NPC IDs

A mob's NPC ID is its unique identification number, and it can be found on sites like WowHead or WowDB For example, search for the mob “Dirkee” on WowHead and go to the mob's page.  That page's URL will look like

32500 is Dirkee's NPC ID.


The only problem mobs for _NPCScan are tamable beasts & Battle Pets. Whenever you run across the tamed version, _NPCScan gets tricked into thinking that mob is nearby. In order to prevent those false positives, _NPCScan only shows alerts for tamable mobs in their original zones That is, if you spot Loque'nahak in Dalaran instead of Sholazar Basin where it usually patrols, _NPCScan would ignore it. When one of these tamable mob false-alarms happens, you'll see a message in your chat window explaining why it got ignored.

Since this makes tamable mobs are so difficult to track, I suggest you fly to the tamable mob's zone first, clear your cache, and then search for it.; Any time you pass through a populated area like Dalaran, you risk filling your cache with popular rare pets.

For Battle Pets there is no way for it to determine if a mob is a spawn or someone's pet. Many Battle Pet addons and just opening the Pet Journal will often cause Battle Pets to become cached.

James D. Callahan III <>
2014-08-25 19:12:48 -0500


James D. Callahan III:
    - Moved CacheWarnings option to global from per-character.
    - Cleanups
    - Removed commented-out code.


First Previous Page 39 of 150 Next Last
  • #2200

    i'm having trouble with my cache, it keeps telling me that i have to clear the cache, so i do, but every time i log in there are still red "x"s next to certain npc's, i found the folder on my Mac, but its still not working, anyone have any suggestions?

  • #2197

    I'm having the same problem as a few other people, my curse is telling me it's up to date, but ingame it tells me it's out of date.
    A solution would be much appreciated thanks/

  • #2195

    We really do need an update soon, since 5.2.0 my scan hasn't worked at all.

    I've tried adding the rares on Isle of Thunder, but the scan doesn't go off on either of them or any of the other rares around the different worlds. And yes, I have checked "out of date".

    It has also began to scan mobs that aren't there when I'm on a taxi mount (almost like the rare battle pets you can see masses of when you use taxi, but aren't there when you land).

  • #2194


    Since latest patch, the 100 yard ring is situated in the middle of the world map instead of being around the cursor indicating my char.
    Is there a way to fix it?

  • #2193

    Galleon should no longer be considered a rare, I think it should be removed off the default list?

    Last edited by ssbattousai on 3/18/2013 1:49:17 AM
  • #2201
    Quote from ssbattousai »

    Galleon should no longer be considered a rare, I think it should be removed off the default list?

    I could sort of agree to this as well even though he is marked as rare the spawn timer is shot compared to what it used to be


  • #2192

    In most cases he does both the overlay as well which can take time so all is ready and u can see the rares on map

  • #2191

    So, I have been a loyal user of this add-on for years. At this point it has not been updated for over 5 months, and I am beginning to think it might be time for someone to take it over. I have a development background, but I have never written any add-on code. Most of my current development is in the iOS world.

    What would it take for someone to take over this project?

    Is there any way we could get confirmation that Saiket, and any others that have worked on this, are done with the development?

    I am willing to consider taking it on, but I do not want to waste my time if the current authors are not done yet. Any thoughts or comments about this from the community would be appreciated.

  • #2203

    Hi, if you look at Saiket profile and activity, he hasn' done anyhting for a very long time (the 20th of September 2012). Here is his post :


    I wish I had more time to respond to comments here and at WoWInterface, but my schedule and priorities have changed a lot since I first published my mods.  For future reference for anyone interested, I do reliably respond to feature requests and bug reports on my Google Code issue tracker here:

    As for your main question, you did delete the right file.  Relative to your WoW folder, the cache always resides in the same sub-folder no matter which operating system you use.  I wish the cache was easier to clear as much as you do, but add-ons don't have the ability to help.

    Last edited by saiket on 20 September 2012
    Perhpas you can try to contact him to see if he is still able to take some time for wow mods or if he prefers to give the lead to someone else.
    Last edited by Drakma on 3/22/2013 1:05:12 AM
  • #2189

    Posted on one of the other _NPC Scan comments:

    /npcscan add 50358 Haywire Sunreaver Construct
    /npcscan add 69664 Mumta
    /npcscan add 69996 Ku'lai Skyclaw
    /npcscan add 69998 Goda
    /npcscan add 70002 Lu-Ban
    /npcscan add 69997 Progenitus
    /npcscan add 70000 Al'tabim the All-Seeing
    /npcscan add 69999 God-Hulk Ramuk
    /npcscan add 70001 Backbreaker Uru
    /npcscan add 70003 Molthor


  • #2190

    Are we suppose to add those to our file to be able to use npscan n new area? if yes can you tell me where please.

  • #2219

    Yes, you just paste each one into chat, one at a time.

  • #2198

    By the looks of it, it seems like you just paste it into your chat.

  • #2186


    How do permanently delete an entry, I have gone into the /npcscan menu for example and removed Sha of Fear, but each time I start up WoW again, its back.  I'm selecting it in the list and pushing the red - at the bottom right.

    Might be an idea to be able to create an "ignore" list, or something.

    Thanks in advance!

  • #2185

    curse client is telling me mine is up to date but ingame is telling me its out of date.... help please


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