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    2,053,304 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 2026.269,472 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.

    Caduceus

    Mod

    Adds advanced ways to manipulate and control Hex Casting spells.

    A93/ 100
    • OverviewA
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityMinecraft 1.20.1
    • ModpacksIn 13
    • ReleasesLatest 25 Jul

    Download

    caduceus-fabric-0.3.0+1.20.1.jar

    Released 25 Jul 2026 · 5.2 MB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Fabric APIAMinecraft 1.20.1 · Fabric (release 0.92.12)
    • Architectury APIAMinecraft 1.20.1 · Fabric (release 9.2.14)
    • Hex CastingAMinecraft 1.20.1 · Fabric (release 0.11.4)
    • Fabric Language KotlinNeeded by Hex CastingAMinecraft 1.20.1 · Fabric (release kotlin.2.4.21)
    • PAUCALNeeded by Hex CastingCMinecraft 1.20.1 · Fabric (release 0.6.0)
    • InlineNeeded by Hex CastingCMinecraft 1.20.1 · Fabric (release 1.2.2)
    • Cloth Config APINeeded by InlineAMinecraft 1.20.1 · Fabric (release 11.1.136)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade A

    How grades work

    Strengths

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

    Points lost

    • Releases in only 3 of the last 24 months−4 points
    • Under 5 million downloads−1 point
    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.3 months ago (25 Jul 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.1.20.1 on Fabric and Forge. 15% or more of the popular mods updated in the last 6 months also have files for 1.20.1. 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 points22 / 22
      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.None of the 8 modpacks with two or more versions removed it 10 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.1 of its 6 releases in 2 years needed a quick fix (17%) 7 / 7
      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 · object-Object/Caduceus 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · object-Object/Caduceus 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.20,919 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.16 months, 10 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in both latest files for recent Minecraft versions. See Security
    Total93 / 100

    65.8 of the 71 points that apply = 93 out of 100. The points above are rounded to whole numbers.

    Images

    • Delimited continuations with Arke's Gambit

    About

    Caduceus is a Hex Casting addon that extends the mod’s manipulation of evaluation and Jump iotas, or continuations, with advanced meta-evaluation tools. Its delimited-jump patterns include Thetis’ Gambit, which casts patterns while limiting what an enclosed Arke’s Gambit can capture, and Arke’s Gambit, which packages captured patterns into a Call iota for later execution. Other patterns let players inspect and rearrange Jump iotas: they can count or separate a jump’s frames, combine frames from different jumps, and extract or add individual frames. Continuation marks, called jump tags in the addon, let patterns read or write an iota associated with the current evaluation or a frame; the tags hold one iota at a time. Caduceus also adds numeric jumps, allowing a pattern list to jump to an indexed entry, with negative numbers counting from the end. Jump iotas are displayed with their components visible, and the addon documents mishaps that can arise from manipulating them or using delimited jumps.

    Written from Modrinth . How we write it

    In-game changes

    Adds no new blocks, items or other content.

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

    Details

    Creator
    object-Object
    License
    MIT License
    Downloads
    21K
    Created
    23 Jun 2025
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , Wiki

    Security

    No harmful code found

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

    What it can do on your computer

    Accepts connections from other computers
    It can accept connections from other computers. Found in clojure, a library it includes.
    Uses folders outside the game
    It can read or write files outside your Minecraft folder, on the rest of your computer. Found: your user folder.
    Starts other programs
    It can start another program on your computer, for example to open a link in your browser. Found in clojure, a library it includes.
    Connects to the internet
    It has code that can go online, for example to check for updates, load skins or send crash reports. Found in the mod's own code, in classgraph, a library it includes and in clojure, a library it includes. See Privacy

    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 · Both latest files 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.
      2 latest files: the newest file for each Minecraft version and loader. Both are for recent versions. 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.
    • Starts other programs
      Purpose not known.
    • Looked for, not foundWe looked for these in the file and did not find them.
      Updating itself, the webcam or microphone, an AI service.
    • Modrinth and CurseForgeA release with a different file on Modrinth and on CurseForge, whose code is not the same. Each file is checked on its own. Nothing is blocked.
      Minecraft 1.20.1 · Fabric · release 0.1.0 · 23 Jun 2025: Modrinth caduceus-fabric-0.1.0+1.20.1.jar, CurseForge caduceus-fabric-0.1.0+1.20.1.jar. 29 classes changed, 33 classes only in the CurseForge file, 33 classes only in the Modrinth file, in gay.object.caduceus: delimcc$fn__361, delimcc__init, arithmetic$make_op, ContinuationArithmetic$fn__395, ContinuationArithmetic$fn__397, ContinuationArithmetic, arithmetic__init, no_prompt$__GT_MishapNoPrompt$fn__353, no_prompt$__GT_MishapNoPrompt$fn__355, no_prompt$__GT_MishapNoPrompt, no_prompt__init, init__init and 83 more.Minecraft 1.20.1 · Forge · release 0.1.0 · 23 Jun 2025: Modrinth caduceus-forge-0.1.0+1.20.1.jar, CurseForge caduceus-forge-0.1.0+1.20.1.jar. 29 classes changed, 33 classes only in the CurseForge file, 33 classes only in the Modrinth file, in gay.object.caduceus: delimcc$fn__361, delimcc__init, arithmetic$make_op, ContinuationArithmetic$fn__395, ContinuationArithmetic$fn__397, ContinuationArithmetic, arithmetic__init, no_prompt$__GT_MishapNoPrompt$fn__353, no_prompt$__GT_MishapNoPrompt$fn__355, no_prompt$__GT_MishapNoPrompt, no_prompt__init, init__init and 83 more.
      code differs in 2 releases

    Privacy

    We found nothing it sends

    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 · Both files 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 both files, for recent Minecraft versions. 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 22 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
      1 image 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
      3,989 code files read

    Compatibility

    See all 10 files
    Fabric
    Forge
    1.201.2126.126.3

    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.
    Fabric APIon FabricAArchitectury APIAHex CastingA
    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.It has no file for Minecraft versions newer than 1.20.1. Many recently updated mods still support 1.20.1.

    Modpacks using this project

    Find modpacks with it

    Modpacks that include Caduceus in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    Hexwoven9.5K downloadslast version with it 23 Oct 2026Hexing Skies1.2K downloadslast version with it 19 Oct 2025Normal Modpack - Cursed? Don't think so....453 downloadslast version with it 20 Dec 2025Cheese Server Modpack399 downloadslast version with it 26 Aug 2025autumn floods372 downloadslast version with it 20 May 2026Scuffed!230 downloadslast version with it 6 Nov 2025Magician's Madness153 downloadslast version with it 22 Jul 2025Rose's Mystery Pack124 downloadslast version with it 19 Jan 2026Artificium Caeli76 downloadslast version with it 13 Jun 2026Angels war serverpack67 downloadslast version with it 24 Mar 2026
    1 to 10 of 1312

    Latest files

    The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    1.20.1·Fabric0.3.00.3.0 · caduceus-fabric-0.3.0+1.20.1.jarSends: None foundRequires:Fabric API, Architectury API, Hex CastingFabric API, Architectury API, Hex CastingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·Forge0.3.00.3.0 · caduceus-forge-0.3.0+1.20.1.jarSends: None foundRequires:Hex Casting, Architectury APIHex Casting, Architectury APIPassedOur checks found nothing harmful in this file. Its code was read too.

    10 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.1The latest file for its Minecraft version and loader·Fabric0.3.00.3.0 · caduceus-fabric-0.3.0+1.20.1.jar (main file)·25 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1The latest file for its Minecraft version and loader·Forge0.3.00.3.0 · caduceus-forge-0.3.0+1.20.1.jar (main file)·25 Jul 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1·Forge0.2.10.2.1 · caduceus-forge-0.2.1+1.20.1.jar (main file)·16 Jan 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1·Fabric0.2.10.2.1 · caduceus-fabric-0.2.1+1.20.1.jar (main file)·16 Jan 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1·Fabric0.2.00.2.0 · caduceus-fabric-0.2.0+1.20.1.jar (main file)·4 Jan 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1·Forge0.2.00.2.0 · caduceus-forge-0.2.0+1.20.1.jar (main file)·4 Jan 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1·Fabric0.1.10.1.1 · caduceus-fabric-0.1.1+1.20.1.jar (main file)·30 Jun 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1·Forge0.1.10.1.1 · caduceus-forge-0.1.1+1.20.1.jar (main file)·30 Jun 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1·Fabric0.1.00.1.0 · caduceus-fabric-0.1.0+1.20.1.jar (main file)·23 Jun 2025PassedOur checks found nothing harmful in this file. The Modrinth and CurseForge files do not contain the same code. See Security.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB
    1.20.1·Forge0.1.00.1.0 · caduceus-forge-0.1.0+1.20.1.jar (main file)·23 Jun 2025PassedOur checks found nothing harmful in this file. The Modrinth and CurseForge files do not contain the same code. See Security.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.2 MB

    Quick fixes

    In the last 2 years, 1 release needed a quick fix: a new release within 3 days to fix a problem. This counts in the grade, but it is too few to lose points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.1

    • v0.1.1+1.20.1 [Forge]30 Jun 2025…Added a workaround for the crash in…