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    2,061,885 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 26 Oct 2026.642,417 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 26 Oct 2026.269,626 projects gradedProjects with a letter from A to F. Counted on 26 Oct 2026.
    How it worksMalware we foundWhat's newAPIAboutPrivacyTermsContact

    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    OptiClient

    Modpack

    a PVP Modpack to increase performance

    Download

    Files come from CurseForge servers.

    OptiClient1.21.11.zip

    Released 27 Mar 2026 · 10.0 MB

    Partly checked: all 29 projects checked, the pack's own files not yet. See Security

    Download
    100%Modpack: 100% of its graded mods are A or Bof mods A or B
    Security
    Partly checked
    Privacy
    4 send data
    Loaders
    Fabric
    Minecraft versions
    Minecraft 1.21.11
    • Overview100%
    • SecurityPartly checked
    • Privacy4 send data
    • AINot checked yet
    • CompatibilityMinecraft 1.21.11
    • ReleasesLatest 27 Mar
    OverviewSecurityPrivacyAICompatibilityReleases

    Mod grades

    How grades work

    Modpacks get no grade of their own, so we show the grades of its mods. Of its 28 graded mods, 28 are graded A or B, 0 C and none D to F. Its last update came out 7 months ago, for Minecraft 1.21.11. See the mods

    Content of this pack29 of 29 checked

    The mods of its newest release (Minecraft 1.21.11 · Fabric, 27 Mar 2026). Each check result is for the latest files of that mod, which may not be the version in this pack.

    ProjectGradeSecurity
    Cloth Config APIMod · 570M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Fabric APIMod · 528.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Entity CullingMod · 426.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.SodiumMod · 413.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Iris ShadersMod · 338.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ImmediatelyFastMod · 331.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.YetAnotherConfigLib (YACL)Mod · 267.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Mod MenuMod · 245.3M downloadsAPassedPassed: our checks found nothing harmful in the latest files.FerriteCoreMod · 244.6M downloadsAPassedPassed: our checks found nothing harmful in the latest files.LithiumMod · 243.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Fabric Language KotlinMod · 219.2M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Sodium ExtraMod · 181.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.BadOptimizationsMod · 129.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Dynamic FPSMod · 126.6M downloadsAPassedPassed: our checks found nothing harmful in the latest files.More CullingMod · 102.3M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Let Me DespawnMod · 100.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Crash AssistantMod · 95M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Text Placeholder APIMod · 92.2M downloadsAPassedPassed: our checks found nothing harmful in the latest files.MidnightLibMod · 88.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.KryptonMod · 83M downloadsAPassedPassed: our checks found nothing harmful in the latest files.AlmanacMod · 73.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Concurrent Chunk Management Engine (Fabric)Mod · 63M downloadsAPassedPassed: our checks found nothing harmful in the latest files.OptiGUIMod · 41.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Cull LeavesMod · 24.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Default Dark ModeResource pack · 24.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.
    1 to 25 of 2912

    1 file not listed: no matching project found.

    Details

    Creator
    user_j578azvyboymxkww
    License
    Not known
    Downloads
    810
    Created
    27 Mar 2026
    Official page
    CurseForge

    Security

    No harmful code found in the projects we checked

    We checked all 29 projects, without running them.

    We have not checked the files in the pack itself yet (settings, scripts).

    Why we show this: a modpack installs the files of its mods, and each mod runs on your computer like any program. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: a modpack has no grade of its own, and each mod's result counts in that mod's grade.

    How we checked · All 29 projects checked
    • Its projects
      See what is in this pack
      29 projects
    • Files in the pack itself
      Not checked yet.

    Privacy

    4 mods send something about you

    We read the code of all 28 of its mods, without running it.

    Entity CullingCrash reportsMod MenuData we could not identifyLet Me DespawnUsage dataCrash AssistantData we could not identify

    Why we show this: a modpack runs the code of its mods, and 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 · All 28 mods read
    • Go online onlyTheir code contacts a web address, for example to check for updates. We found nothing it sends about you.
      Iris ShadersDynamic FPSAlmanac
      3 mods
    • Send nothing
      Their code contacts no web address.
      21 mods

    AI

    No sign that AI was used to make its mods

    We found no AI use from before this release (27 Mar 2026) in the 28 mods we checked.

    3 mods show AI use only from after it, so it does not apply to the versions in this pack.

    Made with AI: not checked yet

    We have not looked for AI tools in the pack itself yet.

    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 · 1 place 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.
      Not on Modrinth.
    • 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 in the description
      Changelogs not read yet
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Not read yet
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Not read yet

    Compatibility

    See the file in Releases
    Fabric
    1.2126.126.226.3

    Point at or tap a version to see its loaders.

    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.29 projects, listed in the Overview tab.
    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 1.21.11. Many recently updated mods still support 1.21.11.

    1 release

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.11·Fabric1.0.01.0.0 · OptiClient1.21.11.zip·27 Mar 2026Partly checkedPartly checked: all 29 projects checked, the pack's own files not yet.Open this file on CurseForgeDownload · Stable · 10.0 MB