Railway Tools for Axiom

On this page

Axiom addon

Railway Tools for Axiom is my addon for planning railway paths in BuildTheEarth workflows. Builders place control points, inspect the proposed route and confirm the resulting block placement from within Axiom’s tool interface.

The path uses Catmull–Rom spline interpolation to connect control points with curves. The implementation then samples the curve into block positions and classifies straight, diagonal and turning segments to choose appropriate block states. It is a construction aid for a projected Minecraft world, not a railway engineering simulator.

View on Modrinth

What the project does

Place control points with a right-click and confirm the route with Enter.
Remove the latest point with Delete or clear the route with Escape.
Adjust sampling density from 2 to 32 points per block.
Preview the placement before committing it, and optionally snap the route to the terrain.

Environment and requirements

The reviewed README targets Minecraft 1.21.10, Fabric Loader 0.16.0 or newer, Fabric API and Axiom. Axiom is required and is not bundled.

Getting started

Install the matching Fabric environment and Axiom, then use the BTE Rail Path tool in Axiom’s palette. Begin with a short section to check the palette, curve density and ground-snapping behavior before extending a longer corridor. The README lists Axiom TOOL and BUILD_SECTION permissions.

Scope, limitations and attribution

This addon cannot run without Axiom. Block palettes and Minecraft APIs are version-sensitive, so use the requirements of the version you download. The project is not an official Axiom or BuildTheEarth release.

Project sources

Project description and releases on Modrinth · reviewed on 7 September 2026. Modrinth is the primary destination for current releases and compatibility.