diff --git a/schemas/scoring.schema.json b/schemas/scoring.schema.json
index 72e296b..1923585 100644
--- a/schemas/scoring.schema.json
+++ b/schemas/scoring.schema.json
@@ -6,7 +6,10 @@
     },
     "schemaVersion": {
       "type": "number",
-      "const": 2
+      "enum": [
+        2,
+        3
+      ]
     },
     "id": {
       "type": "string",
@@ -285,6 +288,475 @@
       ],
       "additionalProperties": false
     },
+    "formula": {
+      "type": "object",
+      "properties": {
+        "nodes": {
+          "type": "array",
+          "items": {
+            "anyOf": [
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "input"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "label": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 80
+                  },
+                  "kind": {
+                    "type": "string",
+                    "enum": [
+                      "number",
+                      "boolean",
+                      "choice"
+                    ],
+                    "default": "number"
+                  },
+                  "min": {
+                    "type": "integer"
+                  },
+                  "max": {
+                    "type": "integer"
+                  },
+                  "choices": {
+                    "type": "array",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "label": {
+                          "type": "string",
+                          "minLength": 1,
+                          "maxLength": 80
+                        },
+                        "value": {
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "label",
+                        "value"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1
+                  },
+                  "icon": {
+                    "type": "string",
+                    "maxLength": 40
+                  },
+                  "requiresOption": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "label"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "const"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "value": {
+                    "type": "integer"
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "value"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "option"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "optionId": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "optionId"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "op"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "op": {
+                    "type": "string",
+                    "enum": [
+                      "add",
+                      "sub",
+                      "mul",
+                      "div",
+                      "min",
+                      "max"
+                    ]
+                  },
+                  "args": {
+                    "type": "array",
+                    "items": {
+                      "type": "string",
+                      "minLength": 1,
+                      "maxLength": 60,
+                      "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                    },
+                    "minItems": 1,
+                    "maxItems": 20
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "op",
+                  "args"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "table"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "arg": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "steps": {
+                    "type": "array",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "min": {
+                          "type": "integer"
+                        },
+                        "points": {
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "min",
+                        "points"
+                      ],
+                      "additionalProperties": false
+                    },
+                    "minItems": 1,
+                    "maxItems": 50
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "arg",
+                  "steps"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "compare"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "cmp": {
+                    "type": "string",
+                    "enum": [
+                      "gt",
+                      "ge",
+                      "lt",
+                      "le",
+                      "eq",
+                      "ne"
+                    ]
+                  },
+                  "args": {
+                    "type": "array",
+                    "minItems": 2,
+                    "maxItems": 2,
+                    "items": [
+                      {
+                        "type": "string",
+                        "minLength": 1,
+                        "maxLength": 60,
+                        "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                      },
+                      {
+                        "type": "string",
+                        "minLength": 1,
+                        "maxLength": 60,
+                        "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                      }
+                    ]
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "cmp",
+                  "args"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "if"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "args": {
+                    "type": "array",
+                    "minItems": 3,
+                    "maxItems": 3,
+                    "items": [
+                      {
+                        "type": "string",
+                        "minLength": 1,
+                        "maxLength": 60,
+                        "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                      },
+                      {
+                        "type": "string",
+                        "minLength": 1,
+                        "maxLength": 60,
+                        "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                      },
+                      {
+                        "type": "string",
+                        "minLength": 1,
+                        "maxLength": 60,
+                        "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                      }
+                    ]
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "args"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "rank"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "arg": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "order": {
+                    "type": "string",
+                    "enum": [
+                      "highest",
+                      "lowest"
+                    ],
+                    "default": "highest"
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "arg"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "best"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "arg": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "order": {
+                    "type": "string",
+                    "enum": [
+                      "highest",
+                      "lowest"
+                    ],
+                    "default": "highest"
+                  },
+                  "ties": {
+                    "type": "string",
+                    "enum": [
+                      "all",
+                      "none"
+                    ],
+                    "default": "all"
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "arg"
+                ],
+                "additionalProperties": false
+              },
+              {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "const": "output"
+                  },
+                  "id": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "arg": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  },
+                  "category": {
+                    "type": "string",
+                    "minLength": 1,
+                    "maxLength": 60,
+                    "pattern": "^[a-z0-9][a-z0-9_-]*$"
+                  }
+                },
+                "required": [
+                  "type",
+                  "id",
+                  "arg",
+                  "category"
+                ],
+                "additionalProperties": false
+              }
+            ]
+          },
+          "minItems": 1,
+          "maxItems": 150
+        },
+        "layout": {
+          "type": "object",
+          "additionalProperties": {
+            "type": "object",
+            "properties": {
+              "x": {
+                "type": "number"
+              },
+              "y": {
+                "type": "number"
+              }
+            },
+            "required": [
+              "x",
+              "y"
+            ],
+            "additionalProperties": false
+          },
+          "propertyNames": {
+            "minLength": 1,
+            "maxLength": 60,
+            "pattern": "^[a-z0-9][a-z0-9_-]*$"
+          }
+        }
+      },
+      "required": [
+        "nodes"
+      ],
+      "additionalProperties": false
+    },
     "options": {
       "type": "array",
       "items": {