pipe-1.17-1.3.1.jar is a release file of the Minecraft mod Pipe for Fabric, made for Minecraft 1.17, 1.17-Snapshot. It was published on June 3, 2021 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Pipe mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.