This category is slotType=head: the items the server accepts in the head slot. It is not a search for the word "helmet". Measured on this datapack: 101 entries declare slotType=head, and 100 are listed below. The one that is missing is a client id collision: the "a hat of the mad" (server id 9080) shares client id 3573 with the "a magician hat" (server id 2662), which comes first in definitions.json. The client renders art by client id, so keeping both would show the magician hat's art on a line whose text says hat of the mad. The rule is the one already used by tools/build-client-item-definitions.js (first occurrence wins), and the discarded entry is declared in manifest.json. This is why the raw count and the published count differ by one, and why the 101 is not what you see on the page.
Cutting by name fails here in BOTH directions, and both are big. 47 of the 100 listed items have no "helmet" in the name at all — they are the hats (a party hat, a santa hat, witch hat, a jade hat, a batwing hat, a sedge hat, an odd hat), the masks (a ceremonial mask, a yalahari mask, a glacier mask), the crowns and tiaras (a crown, a cobra crown, a tiara of power, an ancient tiara) and the galea/helm — so a page built by name would publish 53 rows and silently drop 47 real head items the server accepts. Conversely 9 items whose name contains "helmet" are not here: 4 are parts and ornaments of a helmet rather than helmets (a helmet ornament, a helmet piece, a helmet adornment) plus a damaged one (a damaged helmet), and the rest are broken or rival pieces (a broken helmet, a damaged steel helmet — twice, at two different ids, and one of them also loses a client id collision — Morik's helmet, a werewolf helmet). The datapack declares no slotType for any of them, so the server does not accept them in the head slot. They are left out rather than guessed in.
No item on this page declares weaponType, ammoType or shootType (measured on all 101), so the Slot column says head on every row and the Type column is empty everywhere. That is the cut being honest: slotType alone decides here, and there is no second field to narrow it. A generator that reached for a weapon field would have nothing to narrow and would guess.
What the columns do separate: armor is declared on 94 of the 100 and runs from 0 to 12, and the 6 without it are the crown, the flower wreath, the mining helmet, the two Epic Wisdom hats and a tiara of power — which is why an empty Armor cell here means the datapack declares nothing, not that the item is worthless. The absorptions are on 21 of the 100 and are what tells a magma monocle (fire +4, ice -5) from a glacier mask (ice +4, energy -5) from a terra hood (earth +4, fire -5) from a lightning headband (energy +4, earth -5): the four come in pairs of one element absorbed and one element resisted, and the two numbers are close enough that publishing only one of them would look right. magiclevelpoints is declared on only 7 (1 on a hat of the mad, a batwing hat, a jade hat, a rubber cap; 2 on a yalahari mask, a cobra crown, a gill gugel). The column is filled from the datapack and the two values are strings ("1" and "2"), exactly as the catalogue stores them. suppressDrown is on a single item (a helmet of the deep) and absorbPercentManaDrain on a single item (witch hat, 5). A page built on a list of expected attributes would have invented most of these columns or, worse, left them out.
Two items are declared as an equipped/unequipped pair, and the page publishes both because both are declared in the datapack: the two "a tiara of power" (server ids 26130 and 26131, the first carrying transformEquipTo and the second transformDeEquipTo, decayTo and duration), and the two "a helmet of the deep" (server ids 5461 and 12541). They have different ids and different art, so showing one name twice with different numbers is the correct rendering, not a duplicate bug.
| Sprite | Name | Server id | Client id | Slot | Type | Weight | Armor | Duration | Absorb % (death) | Absorb % (drown) | Absorb % (earth) | Absorb % (energy) | Absorb % (fire) | Absorb % (ice) | Absorb % (mana drain) | Absorb % (physical) | Decays to | Description | Health gain | Health ticks | Magic level points | Mana gain | Mana ticks | Shows attributes | Shows duration | Skill (distance) | Skill (shield) | Speed | Stops duration | Suppresses drown | Transforms to (unequipped) | Transforms to (equipped) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| a bandana | 5917 | 5917 | head | 850 8.50 oz | 1 | It is quite fashionable as well as useful for anyone spending huge amounts of time in the sun. | ||||||||||||||||||||||||||
| a batwing hat | 10016 differs | 9103 differs | head | 600 6.00 oz | 3 | 1 | ||||||||||||||||||||||||||
| a bonelord helmet | 3972 differs | 3408 differs | head | 4600 46.00 oz | 7 | |||||||||||||||||||||||||||
| a brass helmet | 2460 differs | 3354 differs | head | 2700 27.00 oz | 3 | |||||||||||||||||||||||||||
| a broken visor | 22518 differs | 20184 differs | head | 1400 14.00 oz | 1 | |||||||||||||||||||||||||||
| a ceremonial mask | 2501 differs | 3395 differs | head | 4000 40.00 oz | 9 | |||||||||||||||||||||||||||
| a chain helmet | 2458 differs | 3352 differs | head | 4200 42.00 oz | 2 | |||||||||||||||||||||||||||
| a charmer's tiara | 3971 differs | 3407 differs | head | 2200 22.00 oz | 2 | |||||||||||||||||||||||||||
| a cobra crown | 12630 differs | 11674 differs | head | 850 8.50 oz | 3 | 5 | -5 | 2 | ||||||||||||||||||||||||
| a crest of the deep seas | 24261 differs | 21892 differs | head | 4500 45.00 oz | 7 | 5 | 10 | |||||||||||||||||||||||||
| a crown | 2128 differs | 3011 differs | head | 1900 19.00 oz | ||||||||||||||||||||||||||||
| a crown helmet | 2491 differs | 3385 differs | head | 2950 29.50 oz | 7 | |||||||||||||||||||||||||||
| a crusader helmet | 2497 differs | 3391 differs | head | 5200 52.00 oz | 8 | |||||||||||||||||||||||||||
| a dark helmet | 2490 differs | 3384 differs | head | 4600 46.00 oz | 6 | |||||||||||||||||||||||||||
| a demon helmet | 2493 differs | 3387 differs | head | 2950 29.50 oz | 10 | You hear an evil whispering from inside. | ||||||||||||||||||||||||||
| a depth galea | 15408 differs | 13995 differs | head | 4600 46.00 oz | 8 | 100 | Enables underwater exploration. | |||||||||||||||||||||||||
| a depth galea | 15651 differs | 14258 differs | head | 4600 46.00 oz | 8 | 100 | Enables underwater exploration. | |||||||||||||||||||||||||
| a devil helmet | 2462 differs | 3356 differs | head | 5000 50.00 oz | 7 | |||||||||||||||||||||||||||
| a dragon scale helmet | 2506 differs | 3400 differs | head | 3250 32.50 oz | 9 | |||||||||||||||||||||||||||
| a dwarven helmet | 2502 differs | 3396 differs | head | 4200 42.00 oz | 6 | 2 | ||||||||||||||||||||||||||
| a feather headdress | 3970 differs | 3406 differs | head | 2100 21.00 oz | 2 | |||||||||||||||||||||||||||
| a flower wreath | 9927 differs | 9013 differs | head | 500 5.00 oz | ||||||||||||||||||||||||||||
| a fur cap | 7458 | 7458 | head | 1800 18.00 oz | 3 | It feels nice and warm on your ears. | ||||||||||||||||||||||||||
| a gill gugel | 18398 differs | 16104 differs | head | 900 9.00 oz | 5 | 6 | -6 | 2 | ||||||||||||||||||||||||
| a glacier mask | 7902 differs | 829 differs | head | 1000 10.00 oz | 5 | -5 | 4 | |||||||||||||||||||||||||
| a golden helmet | 2471 differs | 3365 differs | head | 3200 32.00 oz | 12 | It's the famous Helmet of the Stars. | ||||||||||||||||||||||||||
| a hat of the mad | 2323 differs | 3210 differs | head | 700 7.00 oz | 3 | You have a vague feeling that it looks somewhat silly. | 1 | |||||||||||||||||||||||||
| a helmet of nature | 10299 differs | 9382 differs | head | 1100 11.00 oz | 3 | One can only hope nobody will ever insist on wearing that. | ||||||||||||||||||||||||||
| a helmet of the ancients | 2342 differs | 3229 differs | head | 2760 27.60 oz | 8 | The gem of the helmet is burned out and should be replaced. | ||||||||||||||||||||||||||
| a helmet of the ancients | 2343 differs | 3230 differs | head | 2760 27.60 oz | 11 | 1800 | 2342 | The gem is glowing with power. | ||||||||||||||||||||||||
| a helmet of the deep | 5461 differs | 5460 differs | head | 21000 210.00 oz | 2 | 100 | Enables underwater exploration. | |||||||||||||||||||||||||
| a helmet of the deep | 12541 differs | 11585 differs | head | 21000 210.00 oz | 2 | 21600 | 5461 | 1 | True | 600 | 1 | 5461 | ||||||||||||||||||||
| a helmet of the lost | 20132 differs | 17852 differs | head | 3500 35.00 oz | 7 | |||||||||||||||||||||||||||
| a helmet of ultimate terror | 10298 differs | 9381 differs | head | 1250 12.50 oz | 3 | There is evil inside. | ||||||||||||||||||||||||||
| a horned helmet | 2496 differs | 3390 differs | head | 5100 51.00 oz | 11 | |||||||||||||||||||||||||||
| a horseman helmet | 3969 differs | 3405 differs | head | 4200 42.00 oz | 6 | |||||||||||||||||||||||||||
| a jade hat | 11368 differs | 10451 differs | head | 900 9.00 oz | 4 | 1 | ||||||||||||||||||||||||||
| a jester hat | 7957 differs | 894 differs | head | 1000 10.00 oz | 1 | |||||||||||||||||||||||||||
| a krimhorn helmet | 7461 | 7461 | head | 5100 51.00 oz | 6 | |||||||||||||||||||||||||||
| a leather helmet | 2461 differs | 3355 differs | head | 2200 22.00 oz | 1 | |||||||||||||||||||||||||||
| a legion helmet | 2480 differs | 3374 differs | head | 3100 31.00 oz | 4 | |||||||||||||||||||||||||||
| a lightning headband | 7901 differs | 828 differs | head | 1000 10.00 oz | 5 | -5 | 4 | |||||||||||||||||||||||||
| a mage hat | 8820 differs | 7992 differs | head | 900 9.00 oz | 3 | |||||||||||||||||||||||||||
| a mage's cap | 13756 differs | 12599 differs | head | 1000 10.00 oz | 3 | 4 | ||||||||||||||||||||||||||
| a magician hat | 2662 differs | 3573 differs | head | 750 7.50 oz | 1 | |||||||||||||||||||||||||||
| a magma monocle | 7900 differs | 827 differs | head | 1000 10.00 oz | 5 | 4 | -5 | |||||||||||||||||||||||||
| a mighty helm of green sparks | 10316 differs | 9399 differs | head | 4600 46.00 oz | 6 | This helmet spawns green stars. Awesome. | ||||||||||||||||||||||||||
| a mining helmet | 7497 differs | 139 differs | head | 700 7.00 oz | This is Budrik's old mining helmet. | |||||||||||||||||||||||||||
| a mining helmet | 7939 differs | 875 differs | head | 700 7.00 oz | 1 | This is your personal mining helmet. | ||||||||||||||||||||||||||
| a mystic turban | 2663 differs | 3574 differs | head | 850 8.50 oz | 1 | Something is strange about this turban. | ||||||||||||||||||||||||||
| a pair of earmuffs | 7459 | 7459 | head | 500 5.00 oz | 0 | 2 | They feel nice and warm on your ears. | |||||||||||||||||||||||||
| a party hat | 6578 | 6578 | head | 750 7.50 oz | 1 | |||||||||||||||||||||||||||
| a pirate hat | 6096 | 6096 | head | 1250 12.50 oz | 3 | |||||||||||||||||||||||||||
| a post officer's hat | 2665 differs | 3576 differs | head | 700 7.00 oz | 1 | This hat is the insignia of all post officers. | ||||||||||||||||||||||||||
| a prismatic helmet | 18403 differs | 16109 differs | head | 5600 56.00 oz | 9 | 5 | 1 | |||||||||||||||||||||||||
| a ragnir helmet | 7462 | 7462 | head | 3100 31.00 oz | 6 | |||||||||||||||||||||||||||
| a royal helmet | 2498 differs | 3392 differs | head | 4800 48.00 oz | 9 | An excellent masterpiece of a smith. | ||||||||||||||||||||||||||
| a rubber cap | 23536 differs | 21165 differs | head | 800 8.00 oz | 5 | 3 | -3 | 1 | ||||||||||||||||||||||||
| a rusty helmet | 9820 differs | 8906 differs | head | 2800 28.00 oz | 1 | If you can remove the rust layer and dirt from the helmet you will be able to see what it is. | ||||||||||||||||||||||||||
| a rusty helmet | 9821 differs | 8907 differs | head | 2800 28.00 oz | 1 | If you can remove the rust layer and dirt from the helmet you will be able to see what it is. | ||||||||||||||||||||||||||
| a rusty helmet | 9822 differs | 8908 differs | head | 2800 28.00 oz | 1 | If you can remove the rust layer and dirt from the helmet you will be able to see what it is. | ||||||||||||||||||||||||||
| a santa hat | 6531 | 6531 | head | 750 7.50 oz | 1 | |||||||||||||||||||||||||||
| a sedge hat | 12656 differs | 11700 differs | head | 1800 18.00 oz | 2 | This simple hat might be more worth than what it looks like. | ||||||||||||||||||||||||||
| a shamanic mask | 24848 differs | 22192 differs | head | 3100 31.00 oz | 4 | |||||||||||||||||||||||||||
| a shroud of despair | 25413 differs | 22757 differs | head | 3400 34.00 oz | 7 | 3 | ||||||||||||||||||||||||||
| a skull helmet | 5741 | 5741 | head | 4200 42.00 oz | 9 | |||||||||||||||||||||||||||
| a soldier helmet | 2481 differs | 3375 differs | head | 3200 32.00 oz | 5 | |||||||||||||||||||||||||||
| a steel helmet | 2457 differs | 3351 differs | head | 4600 46.00 oz | 6 | |||||||||||||||||||||||||||
| a strange helmet | 2479 differs | 3373 differs | head | 4600 46.00 oz | 6 | |||||||||||||||||||||||||||
| a studded helmet | 2482 differs | 3376 differs | head | 2450 24.50 oz | 2 | |||||||||||||||||||||||||||
| a terra hood | 7903 differs | 830 differs | head | 1000 10.00 oz | 5 | 4 | -5 | |||||||||||||||||||||||||
| a tiara of power | 26130 differs | 23474 differs | head | 1150 11.50 oz | True | True | 26131 | |||||||||||||||||||||||||
| a tiara of power | 26131 differs | 23475 differs | head | 1150 11.50 oz | 7 | 3600 | 8 | 0 | 2 | 6000 | 8 | 6000 | True | 20 | 26130 | |||||||||||||||||
| a tribal mask | 3967 differs | 3403 differs | head | 2500 25.00 oz | 2 | |||||||||||||||||||||||||||
| a viking helmet | 2473 differs | 3367 differs | head | 3900 39.00 oz | 4 | |||||||||||||||||||||||||||
| a visage of the end days | 25410 differs | 22754 differs | head | 3800 38.00 oz | 10 | |||||||||||||||||||||||||||
| a warrior helmet | 2475 differs | 3369 differs | head | 6800 68.00 oz | 8 | |||||||||||||||||||||||||||
| a winged helmet | 2474 differs | 3368 differs | head | 1200 12.00 oz | 10 | It's the Helmet of Hermes. | ||||||||||||||||||||||||||
| a wood cape | 2664 differs | 3575 differs | head | 1100 11.00 oz | 3 | 4 | 1 | |||||||||||||||||||||||||
| a yalahari mask | 9778 differs | 8864 differs | head | 3500 35.00 oz | 5 | 2 | ||||||||||||||||||||||||||
| a Zaoan helmet | 11302 differs | 10385 differs | head | 6600 66.00 oz | 9 | 5 | ||||||||||||||||||||||||||
| an amazon helmet | 2499 differs | 3393 differs | head | 2950 29.50 oz | 7 | |||||||||||||||||||||||||||
| an ancient tiara | 2139 differs | 3022 differs | head | 820 8.20 oz | 0 | |||||||||||||||||||||||||||
| an elite draken helmet | 12645 differs | 11689 differs | head | 4300 43.00 oz | 9 | 3 | 1 | |||||||||||||||||||||||||
| an enchanted werewolf helmet | 24744 differs | 22088 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24769 differs | 22113 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24770 differs | 22114 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24771 differs | 22115 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24772 differs | 22116 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24783 differs | 22127 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24784 differs | 22128 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24785 differs | 22129 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24786 differs | 22130 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an enchanted werewolf helmet | 24788 differs | 22132 differs | head | 2500 25.00 oz | 9 | |||||||||||||||||||||||||||
| an iron helmet | 2459 differs | 3353 differs | head | 3000 30.00 oz | 5 | |||||||||||||||||||||||||||
| an odd hat | 10291 differs | 9374 differs | head | 700 7.00 oz | 5 | It has to be one of the fabled helmets of light. | ||||||||||||||||||||||||||
| Ferumbras' hat | 5903 | 5903 | head | 850 8.50 oz | 1 | It is the proof that Ferumbras has fallen. For now. The Edron Academy should be interested in this. | ||||||||||||||||||||||||||
| The Epic Wisdom | 13946 differs | 12809 differs | head | 805 8.05 oz | This hat was handcrafted by Uman the Wise and cursed by Zathroth the Destroyer. | |||||||||||||||||||||||||||
| The Epic Wisdom | 13947 differs | 12810 differs | head | 805 8.05 oz | This hat was handcrafted by Uman the Wise and cursed by Zathroth the Destroyer. | |||||||||||||||||||||||||||
| witch hat | 10570 differs | 9653 differs | head | 780 7.80 oz | 3 | 5 |