Connector Extras — a technical mod for improving compatibility and running Fabric mods on Forge in Minecraft

Connector Extras — a technical mod for improving compatibility and running Fabric mods on Forge in Minecraft

Connector Extras is an auxiliary mod to Sinytra Connector that adds support for popular third-party Fabric APIs and libraries. Sinytra Connector itself runs Fabric mods on NeoForge, but does not cover every third-party API. If a Fabric mod depends on a specialized library (energy system, custom biomes, ModMenu), without an additional bridge such a mod either does not run or works with limitations. This gap is closed by Connector Extras — a set of separate adapter modules, each for a specific API.

Architecture

There is no separate GUI or manual activation. The mod consists of submodules, each of which activates automatically if the corresponding Fabric mod is present in the mods folder. Otherwise, the module simply does not turn on. For the player this means: it is enough to drop the JAR into mods alongside Sinytra Connector and Forgified Fabric API. 

What the modules cover

FE ↔ E Energy Bridge. The most important module for modpacks with technical mods. Forge mods work with Forge Energy (FE), Fabric mods of the Tech Reborn family — with Team Reborn Energy (E). Without a bridge, blocks from different systems will not transfer energy to each other. The module adds two-way conversion FE ↔ E for both blocks (BlockEntities) and items (ItemStacks). The rate can be edited (see "Config"). The default is 1 E = 10 FE.

Bridges for recipe viewers JEI, REI, EMI. Fabric mods register their recipes via plugins for these viewers. Without a bridge, the Forge version of the viewer does not notice the Fabric plugin, and the recipes do not appear in the list. A separate module for each of the three viewers connects the Fabric plugin detector alongside the Forge detector.

Reach Entity Attributes — Forge port. Certain Fabric mods change the attack and interaction reach via this library. Forge has its own reach attribute system, and a direct port of the Fabric version conflicts with it via mixins. The module adds a clean implementation alongside the Forge system.

Amecs API — Forge port. The same, but for a system of keys with modifiers (Shift+R instead of a simple R). A separate implementation of the Fabric API alongside the Forge system, without overriding bindings.

ModMenu. Transferring buttons for opening config screens of Fabric mods to the Forge mod list — settings become accessible from the interface, without manually editing files.

Other bridges. Architectury API Bridge (proper event bus registration for Fabric mods on top of Architectury), Terrablender Bridge (Fabric biomes are registered via the Forge version of Terrablender), KubeJS Bridge (shifts the initialization of KubeJS Fabric plugins to the right point in the lifecycle), Forge Config API Port (clean API implementation without a separate dependency mod), Pehkui Bridge (support for the Fabric entity scaling library).

Config

Almost everything works without intervention. The only settings file that is manually edited is the parameters of the energy bridge.

config/connectorextras_energy_bridge-common.toml

Each direction is edited separately. In modpacks where a Forge mod creates FE very cheaply, and a Fabric mod outputs E more slowly, a mirrored 10:10 rate penalizes one side — then the rate is adjusted to balance the specific modpack.

Conclusion

Instead of ten separate patch mods, Connector Extras adds all key bridges in one JAR and enables each only as needed. Suitable for players putting together large Minecraft modpacks with a mix of NeoForge and Fabric mods.