Additional Keys

Curse/Modrinth mods

fileName specifies a custom file name for Curse/Modrinth mods just like for raw downloads.

Curse example:

{
	"addonId": 123456,
	"fileId": 654321,
	"fileName": "custom_name.jar"
}

Raw downloads

folder specifies the modpack subfolder the file gets downloaded to. Defaults to mods if unspecified. Included in the original mod, but undocumented.

Example:

{
	"url": "https://my-mod-script.com/download/script.zs",
	"folder": "scripts"
}

Installation policies

extract

extract specifies if the downloaded file should be extracted after the download process. No additional subfolders get created, it works the same way as the ‚Extract Here‘ option in common archiving software. Defaults to false if unspecified.

Example:

{
	"url": "https://my-mod-archive.com/download/archive.zip",
	"installationPolicy":
	{
		"extract": true
	}
}

If you wish to delete the archive after extraction, you can provide the key deleteAfterExtract. Keep in mind that this will result in behavior similar to downloadAlways as the archive is no longer present.

Example:

{
	"url": "https://my-mod-archive.com/download/archive.zip",
	"installationPolicy":
	{
		"extract": true,
		"deleteAfterExtract": true
	}
}

downloadAlways

downloadAlways specifies if the file should be re-downloaded even if it exists locally. Only takes effect if no hash values are supplied. Defaults to false if unspecified.

Example:

{
	"url": "https://my-mod.com/download/mod.jar",
	"installationPolicy":
	{
		"downloadAlways": true
	}
}

supersede

supersede specifies an existing file which gets superseded by the new file. In terms of mod updates, this would be the file name of the old mod.

Example:

{
	"addonId": 637540,
	"fileId": 4398759,
	"fileName": "DramaticTrees-1.12.2-0.13.2.jar",
	"installationPolicy":
	{
		"supersede": "DramaticTrees-1.12.2-0.13.1.jar"
	}
}

DramaticTrees-1.12.2-0.13.2.jar supersedes DramaticTrees-1.12.2-0.13.1.jar. The superseded file gets disabled by adding .disabled-by-mod-director to the file name.

modpackVersion

modpackVersion specifies a required modpack version. The file only gets downloaded if it matches either the localVersion or remoteVersion key in the modpack.json config file.

Example:

{
	"url": "https://my-mod.com/download/mod.jar",
	"installationPolicy":
	{
		"modpackVersion": "1.2.4"
	}
}