Mrpack

Mrpack formatModrinth packModrinth pack format

Modrinth

Mrpack is a custom file format made by Modrinth to store Modpacks metadata, mods and mod configurations.

Structure

Any .mrpack file is a ZIP (MIME type application/x-modrinth-modpack+zip) with an .mrpack extension.

The modpack metadata is stored in the modrinth.index.json with a UTF-8 encoding in the zip root.

The ZIP can also contain 3 folders:

overrides • mods configuration that should be installed in the Minecraft instance upon installation
client-overrides • client side mod configurations
server-overrides • server side mod configurations

`modrinth.index.json`

type Mrpack = {
  formatVersion: 1;
  game: 'minecraft';
  versionId: string;
  name: string;
  summary?: string;
  files: {
    path: string;
    env: {
      client: 'required';
      server: 'required';
    };
    fileSize: number;
    downloads: string[];
    hashes: {
      sha1: string;
      sha512: string;
    };
  }[];
  dependencies: {
    minecraft: string;
    'fabric-loader'?: string;
    forge?: string;
    neoforge?: string;
    'quilt-loader'?: string;
  };
};

Resources

Modrinth support