CraftHost GuideStart guide
LEVEL 2Mods

Fabric API

Install the common library that many Fabric mods expect.

◷ About 5 min◇ EasyReviewed Aug 18, 2026
On this pageLoader and API are differentMissing API errors

Loader and API are different#

Fabric Loader starts and discovers Fabric mods. Fabric API is a collection of shared hooks many mods use. Installing Loader does not automatically install the API into every server.

  1. 1
  2. 2
    Filter for the server’s exact Minecraft version and Fabric loader.
  3. 3
    Download the .jar from the project page.
  4. 4
    Stop the server and upload it to the mods folder.
  5. 5
    If clients use mods that require Fabric API, place the same compatible API release in their profile too.
  6. 6
    Restart and check that the mod list loads without dependency errors.

Missing API errors#

A message such as “requires fabric-api” or “Could not find required mod” normally means the API is absent, wrong-versioned or placed outside the active server’s mods folder.

It is installed but still “missing”

Confirm you edited the correct Crafty server directory, the file ends in .jar, and the console’s Minecraft/Loader version matches the file’s project page. Remove duplicate old API jars before retrying.

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