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    2,054,849 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 Oct 2026.636,163 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 25 Oct 2026.269,417 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Smeltery IO

    Mod

    Automate smeltery casting and speed it up with fuel.

    A93/ 100
    • OverviewA
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityMinecraft 1.12.2
    • ModpacksIn 93
    • ReleasesLatest 26 Aug

    Download

    MCT-SmelteryIO-1.12.2-1.3.72-release.jar

    Released 26 Aug 2026 · 191.3 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade A

    How grades work

    Strengths

    • Security checks passed
    • Stable releases
    • Public source code and issue tracker
    • Widely used
    • Around for years

    Points lost

    • Releases in only 3 of the last 24 months−4 points
    All 11 criteria

    • Maintenance

      4 points lost23 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.9 weeks ago (26 Aug 2026) 12 / 12
      Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.12.2 on Forge. A version many modpacks still use. Latest Minecraft: 26.3. 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 3 of the last 24 months 2 / 6

    • Stability

      Full points15 / 15
      Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.4 of the 77 modpacks with two or more versions removed it in a later one (5%) 10 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.
      Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5

    • Transparency

      Full points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · tgstyle/MCT-Smeltery-IO 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · tgstyle/MCT-Smeltery-IO 3 / 3

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.513,888 4 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.5.8 years, 4 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in the latest file. See Security
    Total93 / 100

    59.6 of the 64 points that apply = 93 out of 100. The points above are rounded to whole numbers.

    About

    Smeltery IO extends Tinkers’ Construct smelteries with fuel and casting machines that speed up and automate casting. Its Fuel Controller uses solid fuel to raise the smeltery to higher temperatures than liquid fuels alone, while Speed Upgrades can increase its fuel ratio. The Casting Machine consumes snowballs to cast items, with Speed Upgrades to accelerate processing, redstone control, adjustable output capacity, and an upgrade that switches between cast and basin modes. Casting can be automated by unlocking slots for casts and upgrades, and a Smeltery Input block accepts items from transport systems such as hoppers, pipes, or conveyors and feeds them to the Smeltery Controller.

    Written from Modrinth and the GitHub README . How we write it

    In-game changes

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.12.2.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Often used with it

    See all 30
    Tinkers' Tool LevelingDCoFH WorldDChiselCThermal FoundationCThermal ExpansionC

    Details

    Creator
    tgstyle
    License
    Creative Commons Attribution Non Commercial Share Alike 4.0 International
    Downloads
    514K
    Created
    5 Jul 2019
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , Discord

    Security

    No harmful code found

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.12.2.

    We checked its files and read their code, without running it.

    Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.

    How we checked · The latest file checked, last on 16 Oct 2026
    • FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.
      1 latest file. It is not for a recent Minecraft version, so the answer above is about it. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
    • Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.
      Read without running it
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.
      Nothing declared about your system outside the game.
    • Looked for, not foundWe looked for these in the file and did not find them.
      The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.12.2.

    We read its code without running it: it contacts no web address while you play.

    Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.

    How we checked · Its one file read
    • Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.
      The code of its one file, for Minecraft 1.12.2. See each file in Releases
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.
      Nothing declared about crash reports, usage data or advertisements.

    AI

    No sign so far that AI was used to make it

    We looked for AI tools in its texts, files and images and found none.

    We have not read its code history yet.

    No sign of AI in the game

    We found no AI service, AI library or AI model file in its code.

    Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.

    How we checked · 5 places read
    • Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.
      No AI content or AI features declared.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Not read yet
    • Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.
      Nothing found
      2 of 7 changelogs read
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Nothing found
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Nothing found
      23 images read
    • Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.
      No AI service, AI library or AI model file
      64 code files read

    Compatibility

    See all 4 files
    Forge
    1.121.151.171.2026.1

    Point at or tap a version to see its loaders.

    Runs onWhere to install it: in your game, on the server, or both. As the author says on Modrinth.Needed in your game and on the server, or you cannot join.
    RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.Nothing
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.No file yet for any of the last 6 Minecraft versions.

    Modpacks using this project

    Find modpacks with it

    93 modpacks include Smeltery IO in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Enigmatica 2: Expert - Extended314K downloadslast version with it 28 Sep 2026 AMP - Sky of Diamonds!306K downloadslast version with it 17 Mar 2021Expedition In The Sky119K downloadslast version with it 10 Jul 2021Mystic's Monstrosity84K downloadslast version with it 11 Oct 2023Interactions25K downloadslast version with it 1 May 2025GUNSLOLHAHAXD19K downloadslast version with it 7 Jan 2021Tinkers Haven13K downloadslast version with it 31 May 2020Dusty Hell8.7K downloadslast version with it 3 Aug 2026Generality6.9K downloadslast version with it 17 Jul 2026Kinda Not CrazyCraft5.2K downloadslast version with it 15 Apr 2020
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Smeltery IO. Share: how many of the modpacks with Smeltery IO also have that mod.

    ProjectTypeShareGrade
    Tinkers' Tool LevelingDModin 85% of the modpacks with Smeltery IOCoFH WorldDModin 83% of the modpacks with Smeltery IOChiselCModin 82% of the modpacks with Smeltery IOThermal FoundationCModin 82% of the modpacks with Smeltery IOThermal ExpansionCModin 81% of the modpacks with Smeltery IOTinker's JEIDModin 77% of the modpacks with Smeltery IOConstruct's ArmoryDModin 77% of the modpacks with Smeltery IOPams HarvestCraftDModin 76% of the modpacks with Smeltery IOThermal DynamicsCModin 76% of the modpacks with Smeltery IOEnder Storage 1.8.+CModin 76% of the modpacks with Smeltery IO
    1 to 10 of 30123

    Latest files

    The newest file for each Minecraft version and loader. None is for a recent Minecraft version. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    Older Minecraft versions
    1.12.2·Forge1.3.72-release1.3.72-release · MCT-SmelteryIO-1.12.2-1.3.72-release.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    4 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.12.2The latest file for its Minecraft version and loader·Forge1.3.72-release1.3.72-release · MCT-SmelteryIO-1.12.2-1.3.72-release.jar (main file)·26 Aug 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 191.3 KB
    1.12.2·Loader not stated1.3.71-release1.3.71-release · MCT-SmelteryIO-1.12.2-1.3.71-release.jar (first file)·28 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthNot on CurseForgeDownload · Stable · 191.9 KB
    1.12.2·Loader not stated1.3.701.3.70 · MCT-SmelteryIO-1.12.2-1.3.70.jar (first file)·17 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthNot on CurseForgeDownload · Stable · 191.6 KB
    1.12.2·Forge1.2.631.2.63 · MCTSmelteryIO-1.12.2-1.2.63.jar (first file)·28 Dec 2020PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 173.9 KB