Codecium is a Fabric mod that vastly improves Codec error messages. This mod was made because most of the current error messages are not useful at all. The name is a play on the term Codec and the common use of periodic table elements for Minecraft mods.
Examples and Comparisons
Commands used:
/give @s minecraft:stick[minecraft:food={saturation: "text"}]/item modify entity @s weapon {function: "minecraft:set_components", components: {"minecraft:rarity": "uncommon", "rarity": "rare"}}/item modify entity @s weapon {function: "minecraft:set_enchantments", enchantments: {"minecraft:fake": "oops"}}

| Version | Minecraft | Loader | Download |
|---|---|---|---|
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Codecium 1.2.3 for 26.4 1.2.3+26.4 |
26.4-snapshot-4, 26.4-snapshot-5, 26.4-snapshot-6, 26.4-snapshot-7
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fabric
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Download |
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Codecium 1.2.2 for 26.3 1.2.2+26.3 |
26.3, 26.3-pre-1, 26.3-pre-2, 26.3-pre-3, 26.3-rc-1, 26.3-rc-2, 26.3-rc-3, 26.3-snapshot-10, 26.3-snapshot-5, 26.3-snapshot-6, 26.3-snapshot-7, 26.3-snapshot-8, 26.3-snapshot-9, 26.4-snapshot-1, 26.4-snapshot-2, 26.4-snapshot-3
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fabric
|
Download |
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Codecium 1.2.1 for 26.3 1.2.1+26.3 |
26.3-snapshot-4
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fabric
|
Download |
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Codecium 1.2.0 for 26.x 1.2.0+26.1 |
26.1, 26.1-pre-1, 26.1-pre-2, 26.1-pre-3, 26.1-rc-1, 26.1-rc-2, 26.1-rc-3, 26.1-snapshot-1, 26.1-snapshot-10, 26.1-snapshot-11, 26.1-snapshot-2, 26.1-snapshot-3, 26.1-snapshot-4, 26.1-snapshot-5, 26.1-snapshot-6, 26.1-snapshot-7, 26.1-snapshot-8, 26.1-snapshot-9, 26.1.1, 26.1.1-rc-1, 26.1.2, 26.1.2-rc-1, 26.2, 26.2-pre-1, 26.2-pre-2, 26.2-pre-3, 26.2-pre-4, 26.2-pre-5, 26.2-pre-6, 26.2-rc-1, 26.2-rc-2, 26.2-snapshot-1, 26.2-snapshot-2, 26.2-snapshot-3, 26.2-snapshot-4, 26.2-snapshot-5, 26.2-snapshot-6, 26.2-snapshot-7, 26.2-snapshot-8, 26.3-snapshot-1, 26.3-snapshot-2, 26.3-snapshot-3, 26w14a
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fabric
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Download |
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Codecium 1.1.0 for 1.21.5-1.21.11 1.1.0 |
1.21.10, 1.21.11, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9
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fabric
|
Download |
|
Codecium 1.0.0 1.0.0 |
1.21.4
|
fabric
|
Download |