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.
178	deploy time decreased	inverted percentage	Degreaser, Reserve Shooter	This controls the weapon switch time
179	minicrits become crits	additive	Bushwacka
180	heal on kill	additive	Powerjack	See attribute 220 for the percentage version.
182	slow enemy on hit major	additive		Use attribute 32 instead.
188	preserve ubercharge	additive	Vita-Saw	Preserves this much ubercharge across deaths.
190	active health regen	additive
199	fires healing bolts	additive	Crusader's Crossbow	Healing bolts heal allies and damage enemies. They do/heal more damage the farther they travel.
200	enables aoe heal	additive	Amputator	Taunt with this weapon out to heal nearby allies
201	gesture speed increase	percentage		Taunt speed increase
202	charge time increased	Claidheamh Mòr	Demoman only. Increases how long you charge for when using the Chargin' Targe or Splendid Screen.
203	drop health pack on kill	additive	Candy Cane	makes enemies drop health packs when killed, may not stack with Medieval Mode.
205	dmg from ranged reduced	Fists of Steel
209	minicrit vs burning player	additive		May not work. Detonator uses attribute 144 set to 1.
215	apply z velocity on damage	unknown, assumed additive		Unknown attribute, may be used on Valve weapons.
216	apply look velocity on damage	unknown, assumed additive		Unknown attribute, may be used on Valve weapons.
217	sanguisuge	additive	Conniver's Kunai	Spy only. Steal enemy health on kill, up to 3x max HP as an overheal.
218	mark for death	additive	Fan O' War	Wears off after a while. Only one enemy can be marked as a time.
219	decapitate type	unknown, assumed additive	Eyelander, Horsless Headless Horsemann's Headtaker, Half-Zoitichi, Nessie's Nine Iron	Hidden attribute, may control animations used by weapon.
220	restore health on kill	additive	Half-Zoitichi	See attribute 180 for the additive version.
221	mult decloak rate	additive		Spy only. Decloak faster?
222	mult sniper charge after bodyshot	percentage
223	mult sniper charge after miss	percentage
224	dmg bonus while half dead	percentage	Shahanshah
232	mod medic killed minicrit boost	additive		Formerly used in TF2 Beta for Pocket Soldier weapons.
233	mod medic healed damage bonus	additive		Formerly used in TF2 Beta for Pocket Soldier weapons.
235	mod shovel speed boost	additive		Formerly used in TF2 Beta for Split Equalizer weapons.
237	mult sniper charge after headshot	percentage		Use tf_weapon_sniperrifle_decap weapon class instead.
238	minigun no spin sounds	additive	Tomislav	Gun still clicks when spinning starts and stops.
239	ubercharge rate bonus for healer	percentage		Formerly used in TF2 Beta for Pocket Soldier weapons.
240	reload time decreased while healed	inverted percentage		Formerly used in TF2 Beta for Pocket Soldier weapons.
242	mod medic killed marked for death	additive		Formerly used in TF2 Beta for Pocket Soldier weapons.
244	mod rage on hit bonus	additive
245	mod rage damage boost	percentage
246	mult charge turn control	percentage	Ali Baba's Wee Booties, Bootlegger	Demoman only. Also requires Chargin' Targe or Splendid Screen (or their charging effect).
247	no charge impact range	Splendid Screen	Demoman only. Currently also allows the next melee to crit. This is likely a bug.
248	charge impact damage increased	percentage	Splendid Screen
249	charge recharge rate increased	percentage	Persian Persuader	Demoman only. Also requires Chargin' Targe or Splendid Screen.
250	air dash count	additive	Atomizer	Allows additional jump.
251	speed buff ally	Disciplinary Action
252	damage force reduction	percentage	Mantreads	Reduces fall damage?
254	airblast functionality flags	unknown, assumed additive		Requires Flamethrower. Likely doesn't work.
255	airblast pushback scale	percentage		Requires Flamethrower. Likely doesn't work.
256	mult airblast refire time	unknown, assumed additive		Requires Flamethrower. Likely doesn't work.
257	airblast vertical pushback scale	unknown, assumed additive		Requires Flamethrower. Likely doesn't work.
258	ammo becomes health	additive	Persian Persuader	The amount of health restored is not specified here, but controlled by the game engine.
259	boots falling stomp	additive	Mantreads	Deals 3x the amount of fall damage you would have taken to the person you land on.
260	deflection size multiplier	additive		Unknown, possible Flamethrower reflect related.
263	melee bound multiplier	unknown, assumed percentage	Disciplinary Action	Supposed to affect the hitboxes of friendly players when hitting them. Doesn't appear to work.
264	melee range multiplier	unknown, assumed percentage	Disciplinary Action	Supposed to affect the melee range of this weapon for friendly players. Doesn't appear to work.
265	mod mini-crit airborne deploy	additive	Reserve Shooter	mini-crits any airborne enemies for n seconds after switching to this weapon.
266	projectile penetration	additive		Use other attributes instead.
267	mini-crit while airborne	additive	Market Gardener	mini-crit enemies if you hit them while you're airborne.
269	mod see enemy health	additive	Solemn Vow	No effect for Spies; they can already see enemy health.
279	maxammo grenades1 increased	percentage		Valve was high when adding this, they forgot they removed grenades from TF2 years ago.
280	override projectile type	additive	Stickybomb Jumper	Value 14 changes the sticky model to the Sticky Jumper stickies. This is due to the sticky model changing after the weapon was introduced.
281	energy weapon no ammo	additive	Cow Mangler 5000, Righteous Bison, Pomson 6000, Manmelter	Replaces this weapon's ammo display with Energy display.
282	energy weapon charged shot	additive	Cow Mangler 5000	Adds alt-fire charged shot that uses all energy to fire.
283	energy weapon penetration	additive	Righteous Bison, Pomson 6000	Shot penetrates targets. Requires attribute 281.
285	energy weapon no deflect	additive	Righteous Bison, Pomson 6000, Manmelter	Adds text saying that the shot can't be reflected
289	centerfire projectile	unknown, assumed additive	The Original	Requires Rocket Launcher
295	has pipboy build interface	unknown, assumed additive	Pip-Boy	Engineer only, changes build interface to Pip-Boy version.
296	sapper kills collect crits	additive	Diamondback	Spy only. One crit per building killed by a Sapper (even if it assisted).
299	add onhit addammo	additive	Widowmaker	Engineer only. Despite the name, adds metal rather than ammo.
300	electrical airblast DISPLAY ONLY	additive	Short-Circuit	Short-Circuit's display text. If you want the Short-Circuit effect, you need to create a tf_weapon_mechanical_arm.
303	mod max primary clip override	unknown, assumed additive	Widowmaker, Short-Circuit	-1 makes ammo display disappear. Possibly Engineer only.
304	sniper full charge damage bonus	percentage	Machina
307	mod no reload DISPLAY ONLY	additive	Widowmaker, Short-Circuit	No reload necessary display text.
308	sniper penetrates players when charged	additive	Machina	Sniper only. Only works while fully charged.
309	crit kill will gib	additive	Apoco-Fists
312	disable weapon hiding for animations	Short-Circuit	Prevents the weapon from vanishing during taunts.
330	override footstep sound set	unknown, assumed additive	Ball-Kicking Boots	Changes sound set used by footsteps. Incompatible with attribute .
331	spawn with physics toy	unknown, assumed additive	Ball-Kicking Boots	1 spawns soccer ball near player when player spawns.
332	fish damage override	unknown, assumed additive	Unarmed Combat	1 changes the Fish Hit and Fish Kill messages to their Unarmed Combat equivalents
333	special dsp	unknown, assumed additive	Brundle Bundle Set Bonus	Pitch shifts voice clips from this player
334	bombnomicon effect on death	additive	Bombnomicon	Makes players explode after death.
335	clip size bonus upgrade	percentage
337	subtract victim medigun charge on hit	additive	Pomson 6000	Value is actually the whole number version of the percent it takes away from the Medic on hit.
338	subtract victim cloak on hit	additive	Pomson 6000	Value is actually the whole number version of the percent it takes away from the Spy on hit. Currently bugged when it hits cloaked Spies and removes several times this amount.
339	reveal cloaked victim on hit	additive		Even more broken version of the Pomson effect.
340	reveal disguised victim on hit	additive		Even more broken version of the Pomson effect.
346	mod bat launches ornaments	additive	Wrap Assassin	Launches bleed ornaments. For stunballs, see attribute 38.
349	energy weapon no drain	unknown, assumed additive
350	ragdolls become ash	unknown, assumed additive	Phlogistinator, Manmelter
352	alt fire teleport to spawn	additive	Eureka Effect	May not work correctly without attribute 353 also present.
354	stun enemies wielding same weapon	additive		Use attribute 369 instead.
357	increase buff duration HIDDEN	unknown, assumed percentage
358	crit forces victim to laugh	additive	Holiday Punch	Mini-crits do not cause victim to laugh.
360	damage all connected	additive	Third Degree	Can follow multiple Medic beams.
361	become fireproof on hit by fire	additive	Spy-cicle	Makes loud extinguish sound. Also causes player to say their "on fire" line (or that of their disguise). Argument is number of seconds to be fireproof.
362	crit from behind	additive	Holiday Punch	It is unclear if this attribute and attribute 24 are identical.
367	extinguish earns revenge crits	additive	Manmelter	It isn't clear if this would work with Jarate, Milk, healing, or airblast.
368	burn damage earns rage	additive	Phlogistinator	Rage appears to be connected to the weapon rather than the player, and it resets on touching a resupply cabinet.
369	tickle enemies wielding same weapon	additive	Holiday Punch	Forces players to do the laugh taunt.
371	taunt success sound	additive	Boston Boom-Bringer	Causes one of several random sounds to play when taunting.
376	aiming no flinch	additive	Cozy Camper	Sniper only.
377	aiming knockback resistance	inverted percentage	Cozy Camper	Sniper only.
378	sniper aiming movespeed decreased	percentage	Cozy Camper	This should be marked as negative, but isn't?
391	mystery solving time decrease	percentage	Eliminating the Impossible Set Bonus	Display only, does nothing in game... yet.