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URLium

Transmit redstone, blockstate, inventory, and more - over HTTP(S) to a webserver.
by electricshmoo
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213 downloads
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Updated Jun 30, 2026
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YouTube Instructional Video

 

URLium is a Polymer Library server-side mod that transmits redstone, entity, and blockstate data over HTTP(S) to a configurable URL.

 

URLium only transmits outbound requests and logs the HTTP response data to the server log. URLium does not allow incoming commands or controls. Any in-bound control of the server is performed by existing native RCON connections, not any feature of URLium.

 

Please report bugs to github repo, all feedback welcome!

 

  •  URLium Block
    - reports redstone power level changes (power level reporting fixed in 1.0.2)
    - can also be right-clicked by user

- transmits 'place', 'break', 'sense', and 'use' events

 

  • URL Post Wand
    - use as tool to report target entity and block data

 

  • URL Config Wand
    - use on Signs, Chests, Barrels, Comparators, Sculk and Light Sensors, Hoppers, Dispensers, Droppers, Lecterns, and Mobs will enable/disable change reporting
    - chest contents sent when changed or block update occurs (not always real-time)
    - sign front and back text content sent when changed
    - when a writable book or written book is placed on lectern, contents will be sen

- comparators send redstone power real-time

- sculk sensors transmit frequency, power, and phase

- entities (mobs, villagers, etc) report right-click events from any user

- light sensors transmit power

  • Ugetblock Command
  • Usetblock Command
    - RCON-accessible command to query and set block data for remote webserver RCON response
    - allows external server to perform lightweight query and get raw ('F3+i' debug query) block data
    - webserver application/game logic can be written in ANY web language that can respond via RCON
    - PHP, Python, Java, JS, Go, C#... anything!

  

  • "/webcom" Command
    - Any user may send message to webserver with "/webcom ...message text..."
    - Set command name ("webcom") in config file to any unused command name

- Respond to the Minecraft server via RCON to complete the circuit of input/output.

- Up to 3 custom-named message commands

 

  • Dependencies:
    - Polymer 0.5.18 for Fabric 1.20.1

- Polymer 0.6.2 for Fabric 1.20.2
- Be sure to run '/polymer generate-pack' to produce the client-side resource pack and update the SHA1 key in server settings or URLium items will not be visible.

 

  • Config: /config/urlium.properties 

- see docs pages below

 

Sample PHP Webserver Response Script:
https://github.com/JacobMunoz/urlium_1_20_1_public/blob/master/doc/php/index.php

 









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