Structure Requirements

Block Requirements

"A": {
      "block": "minecraft:glass"
}

In this example any placements using the character A will be required to be the block minecraft:glass

Port Requirement

"A": {
    "port": "mm:my_port",
    "input": true // Optional: Remove for both input & output
}

This example will match the input ports which have the port id of mm:my_port as defined in the ports config file.

The "input" requires the port to be an input if true and an output if false. The field is optional and can be removed to match both input and output variants of the mm:my_port port.

Port Type Requirement

"A": {
    "portType": "mm:item",
    "input": true // Optional: Remove for both input & output
}

This example will match any input ports with the port type of mm:item.

The "input" requires the port to be an input if true and an output if false. The field is optional and can be removed to match input and output ports of port type mm:item

Block Tag Requirement

"A": {
    "tag": "minecraft:wools"
}

This example will match any block which can be found in the minecraft:wools block tag.

NOTE: This only matches Block Tags which are different from Item Tags.