plugin

Packet AuthMinecraft plugin for 1.21.5

Authorization system for servers

server onlynewest supported release 1.21.5Technology Utility Game Mechanics Management

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: 18 mo ago
Available on: Modrinth

Our 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

Minecraft	Through	Java	Evidence	Released
1.21.5	Bukkit, Velocity, Spigot, Quilt, Purpur, Waterfall, Paper, Folia, Fabric, BungeeCord	21+	declared	25 Mar 2025
1.21.4	BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit	21+	declared	3 Dec 2024
1.21.3	BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit	21+	declared	23 Oct 2024
1.21.2	BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit	21+	declared	22 Oct 2024
1.21.1	Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord	21+	declared	8 Aug 2024
1.21	Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord	21+	declared	13 Jun 2024
1.20.6	BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit	21+	declared	29 Apr 2024
1.20.5	Purpur, Waterfall, Velocity, Spigot, Quilt, Paper, Folia, Fabric, BungeeCord, Bukkit	21+	declared	23 Apr 2024
1.20.4	Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord	17+	declared	7 Dec 2023
1.20.3	Fabric, Waterfall, Velocity, Spigot, Quilt, Bukkit, Purpur, Paper, Folia, BungeeCord	17+	declared	4 Dec 2023
1.20.2	Purpur, Bukkit, BungeeCord, Fabric, Folia, Paper, Quilt, Spigot, Velocity, Waterfall	17+	declared	20 Sept 2023
1.20.1	Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord	17+	declared	12 Jun 2023
1.20	BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit	17+	declared	2 Jun 2023
1.19.4	BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit	17+	declared	14 Mar 2023
1.19.3	BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit	17+	declared	7 Dec 2022
1.19.2	Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord	17+	declared	5 Aug 2022
1.19.1	Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord	17+	declared	27 Jul 2022
1.19	BungeeCord, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, Bukkit	17+	declared	7 Jun 2022
1.18.2	Purpur, Waterfall, Velocity, Spigot, Quilt, Paper, Folia, Fabric, BungeeCord, Bukkit	17+	declared	28 Feb 2022
1.18.1	Bukkit, Waterfall, Velocity, Spigot, Quilt, Purpur, Paper, Folia, Fabric, BungeeCord	17+	declared	10 Dec 2021
1.18	Fabric, Waterfall, Velocity, Spigot, Quilt, Bukkit, Purpur, Paper, Folia, BungeeCord	17+	declared	30 Nov 2021

Download

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

For Minecraft 1.21.5

Choose the loader you use before downloading.

Fabric, Quilt
1.6.4 · 15 May 2025
Multiple loaders are listed; verify the file before downloading.
Choose file on publisher ↗
Paper, Folia, Purpur, Spigot, Bukkit, Velocity, BungeeCord, Waterfall
1.6.3 · 3 Dec 2023
Multiple loaders are listed; verify the file before downloading.
Choose file on publisher ↗

Most recently published release

1.6.4release15 May 2025

PacketAuth-FabricQuilt-1.6.4_1.20.5-1.21.5.jar · 4.4 MB · for 1.21.5, 1.21.4, 1.21.3, 1.21.2, 1.21.1 +3 more · Fabric, Quilt

Choose file on publisher ↗

4dd9b802804a…

Older versions10

1.6.26 Dec 20231.20.4, 1.20.34.5 MB106 downloads9d5b66ba8072…Choose file on publisher ↗
1.6.33 Dec 20231.21.5, 1.21.4, 1.21.3, 1.21.2, 1.21.1 +16 more4.0 MB322 downloadsb092e0a1c639…Choose file on publisher ↗
1.6.124 Aug 20231.20.4, 1.20.3, 1.20.2, 1.20.1, 1.20 +8 more22 KB93 downloads94196dd47111…Choose file on publisher ↗
1.620 Aug 20231.20.4, 1.20.3, 1.20.2, 1.20.1, 1.20 +8 more23 KB73 downloads462f40e6640c…Choose file on publisher ↗
1.5.330 Jul 20231.20.1, 1.2037 KB60 downloads0e71ab306529…Choose file on publisher ↗
1.5.220 Jul 20231.20.1, 1.2037 KB63 downloads961da3239011…Choose file on publisher ↗
1.5.120 Jul 20231.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2 +2 more15 KB80 downloadsfd8f97f6d268…Choose file on publisher ↗
1.516 Jul 20231.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2 +2 more10 KB57 downloads1aaab2bdd609…Choose file on publisher ↗
1.46 Jul 20231.20.1, 1.2039 KB40 downloads1027ce129011…Choose file on publisher ↗
1.326 Jun 20231.20.1, 1.20, 1.19.4, 1.19.3, 1.19.2 +2 more17 KB55 downloads609345967ae7…Choose file on publisher ↗

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?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

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. When available, recorded download links go to the source for that release; verify the publisher, filename and any available 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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Is this information wrong or missing something? .