Allows the connection of newer clients to older server versions for Minecraft servers.
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Nassim Jahnke dfee03ddbf
Fix map data reading
Fixes #3545
2023-12-05 22:17:42 +01:00
.github Some cosmetic code changes and typo fixes 2023-10-08 20:54:04 +10:00
.idea Update copyright headers 2023-01-12 12:45:53 +01:00
adventure Build script improvements 2021-05-25 09:07:06 +02:00
api 4.9.0 Release 2023-12-04 10:11:08 +01:00
api-legacy Start working on 23w40a 2023-10-05 18:22:13 +10:00
build-logic Include api sources in common sources jar 2023-11-06 20:04:45 +10:00
bukkit Some cleanup 2023-11-20 19:56:48 +01:00
bukkit-legacy Improve Gradle scripts 2023-11-06 14:31:44 +10:00
bungee Some cleanup 2023-11-20 19:56:48 +01:00
common Fix map data reading 2023-12-05 22:17:42 +01:00
compat Update yaml compat checker 2023-03-16 20:41:03 +01:00
fabric Improve Gradle scripts 2023-11-06 14:31:44 +10:00
gradle Improve Gradle scripts 2023-11-06 14:31:44 +10:00
licenses Update copyright headers 2023-01-12 12:45:53 +01:00
sponge Include api sources in common sources jar 2023-11-06 20:04:45 +10:00
template Directly send pong, plugin message, and keep alive in 1.20.2->1.20 2023-12-03 10:02:36 +01:00
universal Include api sources in common sources jar 2023-11-06 20:04:45 +10:00
velocity Some cleanup 2023-11-20 19:56:48 +01:00
.gitignore 4.2.0 Release 2022-02-24 09:22:47 +01:00
LICENSE Split parts of common into api; We are now GPL, api is MIT 2021-03-24 14:02:37 +01:00 [ci skip] Update Minecraft Wiki link to new domain after fork (#3446) 2023-09-26 10:52:03 +10:00
build.gradle.kts Improve Gradle scripts 2023-11-06 14:31:44 +10:00 Bump version to 4.9.2-SNAPSHOT 2023-12-05 22:16:15 +01:00
gradlew Update dependencies 2023-10-31 13:38:43 +10:00
gradlew.bat [ci skip] Update Gradle wrapper 2023-09-05 21:16:24 +10:00
settings.gradle.kts Move protocol templates from wiki to extra module 2023-10-16 22:30:12 +10:00


Latest Release Build Status Discord

Allows the connection of higher client versions to lower server versions - it works on any platform you can think of.

The base ViaVersion jar runs on Paper, Velocity, Bungee, and Sponge. We also have projects integrating ViaVersion to run on Fabric, Forge, or as a standalone proxy to join from basically any client version on any server version from the past decade. See HERE for an overview of the different Via* projects.

Supported Versions:

Table (

User Docs:

Releases/Dev Builds

You can find official releases in the following places:

Dev builds for all of our projects are on our Jenkins server:

ViaVersion as a Dependency





repositories {

dependencies {
    compileOnly("com.viaversion:viaversion-api:VERSION") // Replace the version

If you need access to the existing protocol or platform implementations, use the parent artifact viaversion. Please note the differences in licensing.


After cloning this repository, build the project with Gradle by running ./gradlew build and take the created jar out of the build/libs directory.

Mapping Files

Mapping files are generated and managed in our Mappings repository.



The entirety of the API directory (including the legacy API directory) is licensed under the MIT License; see licenses/ for details.

Everything else, unless explicitly stated otherwise, is licensed under the GNU General Public License v3, including the end-product as a whole; see licenses/ for details.

Special thanks to all our Contributors.