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Packet AuthMinecraft plugin for 1.21.5

Authorization system for servers

server onlynewest supported 1.21.5TechnologyUtilityGame MechanicsManagement
Latest version
1.6.4
Minecraft
1.18 to 1.21.5
Java
Java 21+
Platforms
Bukkit, Velocity, Spigot, Quilt and 6 more
Licence
LicenseRef-All-Rights-Reserved
Downloads
8.9k
Updated
16 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Packet Auth servers

One click and Packet Auth is installed on a Paper or Purpur server built for it.

  • 1.21.5
  • Bukkit
  • Velocity
  • Spigot
  • Quilt
  • One click plugin install
  • Paper and Purpur ready
  • Automatic updates
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Packet Auth declares support for, newest first, with the Java runtime that version needs.

Other plugins
MinecraftThroughJavaEvidenceReleased
1.21.5Bukkit, Velocity, Spigot, Quilt, Purpur, Waterfall, Paper, Folia, Fabric, BungeeCord21+declared25 Mar 2025
1.21.4BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit21+declared3 Dec 2024
1.21.3BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit21+declared23 Oct 2024
1.21.2BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit21+declared22 Oct 2024
1.21.1Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord21+declared8 Aug 2024
1.21Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord21+declared13 Jun 2024
1.20.6BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit21+declared29 Apr 2024
1.20.5Purpur, Waterfall, Velocity, Spigot, Quilt, Paper, Folia, Fabric, BungeeCord, Bukkit21+declared23 Apr 2024
1.20.4Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord17+declared7 Dec 2023
1.20.3Fabric, Waterfall, Velocity, Spigot, Quilt, Bukkit, Purpur, Paper, Folia, BungeeCord17+declared4 Dec 2023
1.20.2Purpur, Bukkit, BungeeCord, Fabric, Folia, Paper, Quilt, Spigot, Velocity, Waterfall17+declared20 Sept 2023
1.20.1Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord17+declared12 Jun 2023
1.20BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit17+declared2 Jun 2023
1.19.4BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit17+declared14 Mar 2023
1.19.3BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit17+declared7 Dec 2022
1.19.2Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord17+declared5 Aug 2022
1.19.1Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord17+declared27 Jul 2022
1.19BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit17+declared7 Jun 2022
1.18.2Purpur, Waterfall, Velocity, Spigot, Quilt, Paper, Folia, Fabric, BungeeCord, Bukkit17+declared28 Feb 2022
1.18.1Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord17+declared10 Dec 2021
1.18Fabric, Waterfall, Velocity, Spigot, Quilt, Bukkit, Purpur, Paper, Folia, BungeeCord17+declared30 Nov 2021

Download

From Packet Auth’s own host. Nothing is re-hosted here.

1.6.4release15 May 2025

PacketAuth-FabricQuilt-1.6.4_1.20.5-1.21.5.jar · 4.4 MB · for 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2 +3 more

Download latest
4dd9b802804a…
Older versions10
  • 1.6.26 Dec 20231.20.3, 1.20.44.5 MB106 downloads9d5b66ba8072…Get
  • 1.6.33 Dec 20231.18, 1.18.1, 1.18.2, 1.19, 1.19.1 +16 more4.0 MB322 downloadsb092e0a1c639…Get
  • 1.6.124 Aug 20231.18, 1.18.1, 1.18.2, 1.19, 1.19.1 +8 more0.0 MB93 downloads94196dd47111…Get
  • 1.620 Aug 20231.18, 1.18.1, 1.18.2, 1.19, 1.19.1 +8 more0.0 MB73 downloads462f40e6640c…Get
  • 1.5.330 Jul 20231.20, 1.20.10.0 MB60 downloads0e71ab306529…Get
  • 1.5.220 Jul 20231.20, 1.20.10.0 MB63 downloads961da3239011…Get
  • 1.5.120 Jul 20231.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4 +2 more0.0 MB80 downloadsfd8f97f6d268…Get
  • 1.516 Jul 20231.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4 +2 more0.0 MB57 downloads1aaab2bdd609…Get
  • 1.46 Jul 20231.20, 1.20.10.0 MB40 downloads1027ce129011…Get
  • 1.326 Jun 20231.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4 +2 more0.0 MB55 downloads609345967ae7…Get

Frequently asked

Does Packet Auth work on Minecraft 1.21.5?

Yes. 1.21.5 is the newest Minecraft version Packet Auth declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Packet Auth support?

Everything the author has declared, from 1.18 up to 1.21.5. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Packet Auth on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does Packet Auth support?

Bukkit, Velocity, Spigot, Quilt, Purpur, Waterfall, Paper, Folia, Fabric, BungeeCord. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Packet Auth?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the plugin itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Packet Auth under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Packet Auth?

Choose the release variant for your server platform. Paper, Spigot, Purpur and Bukkit files go in the server's plugins folder; Fabric, Forge, NeoForge and Quilt files go in the mods folder. Restart after installing and check that the Minecraft version matches your server.

Where do I download Packet Auth safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Last checked 2 mo ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .