Yggdrasil Proxy
by 4x
Yggdrasil Proxy routes the Yggdrasil authentication traffic of Minecraft through a configured HTTP or HTTPS proxy, so the game can reach Mojang's session servers from behind a network tool.
What it does
Once installed, the mod reads a proxy device from the operating system automatically and applies it to Yggdrasil verification, which is the step where the game checks an account against Mojang's servers. Players whose traffic already passes through a tool such as Clash do not have to route the entire network card through it, because only the verification requests go through the proxy. Both HTTP and HTTPS proxies are supported.
On Windows the mod reads the proxy from the registry and verifies that the value works before using it. On other operating systems it falls back to environment variables and selects a valid set of variables for the proxy, so players usually do not need to set JVM startup parameters by hand. The mod is designed for both server and client, and it works on either side, and neither side needs it, so either can run it alone.
Files are published for Fabric, Forge, NeoForge and Quilt across 32 release versions, 1.18 – 26.3, and snapshot builds are also published. The code is not open source: the mod is released under All rights reserved. Its documentation mentions GPL 3.0 and a restrictive license addition, and it notes that two patches are made specifically for the mod.
Key features
Automatic proxy detection
The proxy device is read from the system automatically, so the mod works without manual proxy configuration in most setups.
HTTP and HTTPS proxies
Both proxy types are supported for Yggdrasil verification requests.
Registry and environment lookup
On Windows the registry is read and checked, while other systems use environment variables and pick a valid variable set.
Verification through network tools
Tools such as Clash can handle the rest of the traffic, while only the account verification step goes through the proxy.
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
This mod also publishes snapshot builds. Snapshots are not shown in the matrix.
How it compares
Profile Cached is open source under the GNU General Public License v3.0 or later, is server-side only and runs on Fabric, Forge, NeoForge and Quilt for 1.18.2 – 26.2, so players do not install it. Relay - Network Manager is a Fabric mod for 1.20 – 26.2 under a Creative Commons license with no derivatives, and it is required on the server while the client may skip it. OpenLink Chmlfrp Extension is open source under the MIT License, is installed on both client and server and covers 1.20.1 – 1.20.4.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Yggdrasil Proxy | Fabric, Forge, NeoForge and Quilt | 1.18 – 26.3 | Client or server, optional | 2026-06-19 |
| Profile Cached | Fabric, Forge, NeoForge and Quilt | 1.18.2 – 26.2 | Server-side only | 2026-03-29 |
| Relay - Network Manager | Fabric | 1.20 – 26.2 | Server required, client optional | 2026-07-01 |
| OpenLink Chmlfrp Extension | Fabric, Forge, NeoForge and Quilt | 1.20.1 – 1.20.4 | Client and server | 2026-06-15 |
Questions
Does Yggdrasil Proxy need to be installed on the server?
Which loaders does Yggdrasil Proxy support?
Does Yggdrasil Proxy have to be used with all traffic?
In the catalog
Yggdrasil Proxy is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 8,071 mods support Minecraft 26.3.
More from 4x
Similar mods
What the author says
It extends Vanilla's behavior and is more automated. YggdrasilProxy automatically reads them from the registry and verifies it, if it works, then use it immediately.
Official listing
- Modrinth page
- modrinth.com/mod/yggdrasil-proxy
- Owner
- 4x
- Published
- 2025-01-18
- Updated on Modrinth
- 2026-06-19
- Facts verified
- 2026-10-15