PrettyPipes/src/main/resources/data/prettypipes/recipes/mod_filter_modifier.json

{
    "type": "minecraft:crafting_shaped",
    "pattern": [
        " H ",
        "RMR",
        " R "
    ],
    "key": {
        "R": {
            "item": "minecraft:redstone"
        },
        "H": {
            "item": "minecraft:anvil"
        },
        "M": {
            "item": "prettypipes:blank_module"
        }
    },
    "result": {
        "item": "prettypipes:mod_filter_modifier"
    }
}