Team Fortress 2 Item Attribute Indexes

This is a list of the item attribute indexes in TF2. These are useful for applying to weapons to change how they work.

This was created as a companion list for the Item Definition Indexes list, which contains the indexes of the weapons themselves.

This list is divided into Attribute Types, Positive Attributes, Negative Attributes, and Neutral Attributes.

Normally, you'll want to use this with TF2Items.

Attributes that have no weapons listed may not work. Matched attributes where the opposite

Attribute Types

Type	Description	Example
percentage	Expressed as a decimal. 100% is 1.0, 90% is 0.9. Sometimes boolean attributes are represented as percentages.	Natascha: "damage penalty" "0.75" does 75% of normal damage.
inverted percentage	Expressed as a decimal. Value is a percentage, but the percentage is subtracted from 100% when displayed to the user.	Übersaw: "fire rate penalty" "1.2" sets the fire rate to 80% but displays that the weapon fires 20% slower.
additive	Value is added to the default value. Value can be positive or negative. Boolean values are normally expressed as additive.	Blutsauger: "heal on hit for rapidfire" "3.0" makes a Medic heal 3hp whenever damage is dealt with it.
additive percentage	Value is a percentage added to the default value. Value can be positive or negative.	Übersaw: "add user charge on hit" "0.25" makes a Medic gain 25% uber whenever he hit someone with it.
or	Used on only one attribute (see example) for a boolean value. Usually, additive is used instead.	Axtinguisher: "crit vs burning players" "1.0"

Positive

Index	Name	Type	Weapons that use this attribute	Notes
2	damage bonus	percentage	Backburner, Direct Hit, Scotsman's Skullcutter, Loch-n-Load, Warrior's Spirit, Brass Beast, Back Scratcher, Winger, Enforcer
4	clip size bonus	percentage	Family Business
6	fire rate bonus	inverted percentage	Force-a-Nature, Scottish Resistance, Eviction Notice, Soda Popper
8	heal rate bonus	percentage	Quick-Fix		Medic only.
10	ubercharge rate bonus	percentage	Kritzkrieg, Quick-Fix	Medic only.
11	overheal bonus	percentage		Medic only.
13	overheal decay bonus	inverted percentage		Medic only.
14	overheal decay disabled	percentage		Medic only.
16	heal on hit for rapidfire	additive	Blutsauger, Black Box
17	add uber charge on hit	additive percentage	Übersaw	Medic only.
19	tmp dmgbuff on hit	additive percentage
20	crit vs burning players	or	Axtinguisher, Sun-on-a-Stick, Postal Pummeler
24	mod flamethrower back crit	additive	Backburner	Pyro only.
26	max health additive bonus	additive	Gunslinger, Darwin's Danger Shield, Ali Baba's Wee Booties, Bootlegger, Special Delivery Set bonus	Formerly on Backburner, but was removed in mid-2008.
29	alt-fire is vampire	additive
30	fists have radial buff	additive		Heavy only?
31	critboost on kill	additive	Killing Gloves of Boxing (K.G.B.)
32	slow enemy on hit	additive	Natascha
35	mult cloak meter regen rate	percentage	Cloak & Dagger
37	hidden primary max ammo bonus	unknown, assumed additive
38	mod bat launches balls	additive	Sandman	This is for stunballs only. For bleed ornaments, use attribute 346.
40	zoom speed mod disabled	additive		Sniper only.
41	sniper charge per sec	percentage	Sydney Sleeper	Sniper only.
44	scattergun has knockback	additive	Force-a-Nature	Scout only?
45	bullets per shot bonus	percentage	Force-a-Nature	Scatterguns and Shotguns only.
50	absorb damage while cloaked	percentage	Dead Ringer	Appears to have a time limit, but it is unclear how this limit is determined.
51	revolver use hit locations	additive	Ambassador	Causes weapon to headshot if the head is hit. Not clear if it only applies to Revolvers.
52	backstab shield	additive	Razorback
53	fire retardant	additive		Formerly used in TF2 Beta for the Fire Retardant Suit. Use attribute 361 instead.
57	health regen	additive	Medieval Medic Set Bonus
58	self dmg push force increased	percentage		Soldier and Demoman only.
60	dmg taken from fire reduced	inverted percentage	Chargin' Targe, Splendid Screen, Expert's Ordnance Set Bonus
62	dmg taken from crit reduced	inverted percentage	Hibernative Bear Set Bonus	Not used by Battalion's Backup.
64	dmg taken from blast reduced	inverted percentage	Chargin' Targe, Splendid Screen
66	dmg taken from bullets reduced	inverted percentage
68	increase player capture value	additive	Pain Train
70	health from healer increased	percentage
71	weapon burn dmg increased	percentage		Pyro only. Applies to afterburn.
73	weapon burn time increased	percentage		Pyro only. Applies to afterburn.
75	aiming movespeed increased	percentage		Sniper only.
76	maxammo primary increased	percentage	Rocket Jumper
78	maxammo secondary increased	percentage	Scottish Resistance, Stickybomb Jumper
80	maxammo metal increased	percentage		Engineer only.
83	cloak consume rate decreased	inverted percentage		Spy only. Use attribute 34 instead.
84	cloak regen rate increased	percentage		Spy only. Use attribute 35 instead.
87	minigun spinup time decreased	inverted percentage	Tomislav	Heavy only.
88	max pipebombs increased	additive	Scottish Resistance	Demoman only.
90	SRifle Charge rate increased	percentage		Sniper only. Use attribute 41 instead.
92	Construction rate increased	percentage	Jag	Engineer only. Only applies to melee hits.
94	Repair rate increased	percentage		Engineer only.
97	Reload time decreased	inverted percentage	Soda Popper
99	Blast radius increased	percentage		Soldier and Demoman only.
101	Projectile range increased	percentage
103	Projectile speed increased	percentage	Direct Hit, Loch-n-Load, Liberty Launcher, Manmelter
106	weapon spread bonus	percentage		Applies to Scatterguns and Shotguns only.
107	move speed bonus	percentage	Gloves of Running Urgently (G.R.U.), Gas Jockey's Gear Set Bonus
108	health from packs increased	percentage	Back Scratcher
110	heal on hit for slowfire	additive
112	ammo regen	additive percentage
113	metal regen	additive		Engineer only.
114	mod mini-crit airborne	additive	Direct Hit	Only for enemies knocked into the air by explosive damage. For all airborne targets, use attribute 265.
115	mod shovel damage boost	additive	Equalizer
116	mod soldier buff type	unknown, assumed additive	Buff Banner, Battalion's Backup, Concheror, Phlogistinator	1 is mini-crits for yourself and allies, 2 is defense buff for yourself and allies, 3 is healing for yourself and allies, 4 is unknown, 5 is critical hits for yourself.
118	dmg falloff decreased	percentage
119	sticky detonate mode	additive	Scottish Resistance	1 is Scottish Resistance mode. Presumably 0 is standard mode.
121	stickies detonate stickies	additive	Scottish Resistance	Stickybomb Launchers only
122	mod demo buff type	unknown, assumed additive
123	speed boost when active	percentage		Use attributes 107 and 128 instead.
126	sticky arm time bonus	additive		Stickybomb Launchers only
130	medic regen bonus	percentage
135	rocket jump damage reduction	percentage	Gunboats
136	mod sentry killed revenge	additive	Frontier Justice	Engineer only. Crits are granted when sentry is destroyed (2 per kill, 1 per assist). Maximum 35 crits.
137	dmg bonus vs buildings	percentage	Homewrecker, Maul
139	lunchbox adds maxhealth bonus	additive	Dalokohs Bar, Fishcake	Only applies to lunchbox items
140	hidden maxhealth non buffed	additive		Use attribute 26 instead.
146	damage applies to sappers	additive	Homewrecker, Maul	Implicitly on all Engineer melee weapons.
148	building cost reduction	additive		Engineer only.
149	bleeding duration	additive	Southern Hospitality, Tribalman's Shiv, Boston Basher, Three-Rune Blade
150	turn to gold	additive	Golden Wrench, Saxxy
151	DEPRECATED socketed item definition id DEPRECATED	additive		Not used, although it could have been repurposed for Strange Parts.
152	custom texture lo	unknown, assumed additive		It's unclear what exactly this is used for.
154	disguise on backstab	additive	Your Eternal Reward, Wanga Prick	Spy only. Removes Disguise Kit from inventory.
156	silent killer	additive	Your Eternal Reward, Wanga Prick, Spy-cicle	Spy only. Only applies on backstab.
158	add cloak on kill	additive	Big Earner	Spy only. Only applies on backstab. Do not use this and 166 on the same weapon.
160	quiet unstealth	additive	Saharan Spy Set Bonus	May still play sounds at normal volume to the player with it equipped.
162	flame size bonus	percentage		Flamethrowers only
164	flame life bonus	percentage		Flamethrowers only
165	charged airblast	additive		Flamethrowers only
166	add cloak on hit	additive	L'Etranger	Do not use this and 158 on the same weapon.
167	disguise damage reduction	percentage		Spy only.
168	disguise no burn	additive		Spy only. Use attribute 361 instead.
169	dmg from sentry reduced	inverted percentage	Tank Buster Set Bonus
171	airblast cost decreased	percentage		Flamethrowers only
174	flame ammopersec decreased	percentage		Flamethrowers only
175	jarate duration	additive	Sydney Sleeper	Despite the name, not used on Jarate itself.
176	no death from headshots	additive	Croc-o-Style Kit Set Bonus	If you have more than one health and get headshot, reduces you to 1 health. If you have 1 health, headshots will still kill you.