SYNCDATE

create_sync

Create a new sync process spanning two or more calendars. Calendars are referenced as { accountId, providerCalendarId } pairs (use list_available_calendars to discover them). Returns the new sync's id and name. Sensible defaults: direction=two_way, titleMode=busy, privacy=default, initialSyncRange=now_only.

Plan gates: settings.brandingSuppressed requires Plus; settings.prioritySync requires Pro; settings.syncHorizon > 30_days requires matching plan tier; settings.directionalSettings and settings.colorMode:"source" require Pro+. Passing a gated setting above your plan returns FORBIDDEN.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "calendars": "<calendars>"
    },
    "name": "create_sync"
  }
}

Input Schema

Name	Required	Description	Default
`name`	No
`privacy`	No
`settings`	No
`calendars`	Yes
`direction`	No
`titleMode`	No
`customTitle`	No
`copyAttendees`	No
`copyDescription`	No
`initialSyncRange`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed9 schema fields changedNov 3, 2026

addedInput schema / properties / settings / properties / colorSkipTargets

Added value: +{
+  "items": {
+    "maxLength": 512,
+    "minLength": 1,
+    "type": "string"
+  },
+  "maxItems": 100,
+  "type": "array"
+}

added

Input schema / properties / settings / properties / directionalSettings / properties / perPair / additionalProperties / properties / fieldExpressions / properties / color

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "branches": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "result": {
+            "additionalProperties": false,
+            "properties": {
+              "noAutomaticColor": {
+                "const": true,
+                "type": "boolean"
+              },
+              "outlookCategory": {
+                "maxLength": 255,
+                "type": "string"
+              },
+              "outlookCategoryFallbacks": {
+                "items": {
+                  "maxLength": 255,
+                  "type": "string"
+                },
+                "maxItems": 100,
+                "type": "array"
+              },
+              "perProvider": {
+                "additionalProperties": false,
+                "properties": {
+                  "caldav": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "caldavColor": {
+                            "anyOf": [
+                              {
+                                "pattern": "^#[0-9a-fA-F]{6}$",
+                                "type": "string"
+                              },
+                              {
+                                "const": "__calendar__",
+                                "type": "string"
+                              }
+                            ]
+                          }
+                        },
+                        "required": [
+                          "caldavColor"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "google": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "hex": {
+                            "pattern": "^#[0-9a-fA-F]{6}$",
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "hex"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "outlook": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "outlookCategory": {
+                            "maxLength": 255,
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "outlookCategory"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  }
+                },
+                "type": "object"
+              },
+              "perTarget": {
+                "additionalProperties": {
+                  "anyOf": [
+                    {
+                      "type": "null"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "hex": {
+                          "pattern": "^#[0-9a-fA-F]{6}$",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "hex"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "outlookCategory": {
+                          "maxLength": 255,
+                          "minLength": 1,
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "outlookCategory"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "caldavColor": {
+                          "anyOf": [
+                            {
+                              "pattern": "^#[0-9a-fA-F]{6}$",
+                              "type": "string"
+                            },
+                            {
+                              "const": "__calendar__",
+                              "type": "string"
+                            }
+                          ]
+                        }
+                      },
+                      "required": [
+                        "caldavColor"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "propertyNames": {
+                  "maxLength": 1024,
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "type": "object"
+              },
+              "swatch": {
+                "anyOf": [
+                  {
+                    "pattern": "^#[0-9A-Fa-f]{6}$",
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "swatch"
+            ],
+            "type": "object"
+          },
+          "when": {
+            "additionalProperties": false,
+            "properties": {
+              "checks": {
+                "items": {
+                  "anyOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "enum": [
+                            "event.title",
+                            "event.description",
+                            "event.location",
+                            "calendar.name",
+                            "event.link",
+                            "event.meetingService",
+                            "event.dialIn",
+                            "event.meetingCodes",
+                            "event.meetingNotes",
+                            "event.guests",
+                            "event.organizer"
+                          ],
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "contains"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "minLength": 1,
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "enum": [
+                            "event.title",
+                            "event.description",
+                            "event.location",
+                            "calendar.name",
+                            "event.link",
+                            "event.meetingService",
+                            "event.dialIn",
+                            "event.meetingCodes",
+                            "event.meetingNotes",
+                            "event.guests",
+                            "event.organizer"
+                          ],
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "isEmpty",
+                            "isNotEmpty"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.guestCount",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 1000,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.duration",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 525600,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.timeOfDay",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 1439,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.weekday",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "isAnyOf",
+                            "isNoneOf"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "items": {
+                            "enum": [
+                              "mon",
+                              "tue",
+                              "wed",
+                              "thu",
+                              "fri",
+                              "sat",
+                              "sun"
+                            ],
+                            "type": "string"
+                          },
+                          "maxItems": 7,
+                          "minItems": 1,
+                          "type": "array"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.guestDomain",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "hasGuestFrom",
+                            "hasNoGuestFrom",
+                            "allGuestsFrom"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "account",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "format": "uuid",
+                          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "calendar",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "additionalProperties": false,
+                          "properties": {
+                            "accountId": {
+                              "format": "uuid",
+                              "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+                              "type": "string"
+                            },
+                            "providerCalendarId": {
+                              "minLength": 1,
+                              "type": "string"
+                            }
+                          },
+                          "required": [
+                            "accountId",
+                            "providerCalendarId"
+                          ],
+                          "type": "object"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.privacy",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "enum": [
+                            "default",
+                            "private",
+                            "public",
+                            "confidential"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.availability",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "enum": [
+                            "busy",
+                            "free"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "maxItems": 10,
+                "minItems": 1,
+                "type": "array"
+              },
+              "mode": {
+                "enum": [
+                  "all",
+                  "any"
+                ],
+                "type": "string"
+              }
+            },
+            "required": [
+              "mode",
+              "checks"
+            ],
+            "type": "object"
+          }
+        },
+        "required": [
+          "when",
+          "result"
+        ],
+        "type": "object"
+      },
+      "maxItems": 10,
+      "type": "array"
+    },
+    "otherwise": {
+      "additionalProperties": false,
+      "properties": {
+        "noAutomaticColor": {
+          "const": true,
+          "type": "boolean"
+        },
+        "outlookCategory": {
+          "maxLength": 255,
+          "type": "string"
+        },
+        "outlookCategoryFallbacks": {
+          "items": {
+            "maxLength": 255,
+            "type": "string"
+          },
+          "maxItems": 100,
+          "type": "array"
+        },
+        "perProvider": {
+          "additionalProperties": false,
+          "properties": {
+            "caldav": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "caldavColor": {
+                      "anyOf": [
+                        {
+                          "pattern": "^#[0-9a-fA-F]{6}$",
+                          "type": "string"
+                        },
+                        {
+                          "const": "__calendar__",
+                          "type": "string"
+                        }
+                      ]
+                    }
+                  },
+                  "required": [
+                    "caldavColor"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "google": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "hex": {
+                      "pattern": "^#[0-9a-fA-F]{6}$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "hex"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "outlook": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "outlookCategory": {
+                      "maxLength": 255,
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "outlookCategory"
+                  ],
+                  "type": "object"
+                }
+              ]
+            }
+          },
+          "type": "object"
+        },
+        "perTarget": {
+          "additionalProperties": {
+            "anyOf": [
+              {
+                "type": "null"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "hex": {
+                    "pattern": "^#[0-9a-fA-F]{6}$",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "hex"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "outlookCategory": {
+                    "maxLength": 255,
+                    "minLength": 1,
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "outlookCategory"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "caldavColor": {
+                    "anyOf": [
+                      {
+                        "pattern": "^#[0-9a-fA-F]{6}$",
+                        "type": "string"
+                      },
+                      {
+                        "const": "__calendar__",
+                        "type": "string"
+                      }
+                    ]
+                  }
+                },
+                "required": [
+                  "caldavColor"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "propertyNames": {
+            "maxLength": 1024,
+            "minLength": 1,
+            "type": "string"
+          },
+          "type": "object"
+        },
+        "swatch": {
+          "anyOf": [
+            {
+              "pattern": "^#[0-9A-Fa-f]{6}$",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        }
+      },
+      "required": [
+        "swatch"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "branches",
+    "otherwise"
+  ],
+  "type": "object"
+}

added

Input schema / properties / settings / properties / directionalSettings / properties / perTarget / additionalProperties / properties / fieldExpressions / properties / color

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "branches": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "result": {
+            "additionalProperties": false,
+            "properties": {
+              "noAutomaticColor": {
+                "const": true,
+                "type": "boolean"
+              },
+              "outlookCategory": {
+                "maxLength": 255,
+                "type": "string"
+              },
+              "outlookCategoryFallbacks": {
+                "items": {
+                  "maxLength": 255,
+                  "type": "string"
+                },
+                "maxItems": 100,
+                "type": "array"
+              },
+              "perProvider": {
+                "additionalProperties": false,
+                "properties": {
+                  "caldav": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "caldavColor": {
+                            "anyOf": [
+                              {
+                                "pattern": "^#[0-9a-fA-F]{6}$",
+                                "type": "string"
+                              },
+                              {
+                                "const": "__calendar__",
+                                "type": "string"
+                              }
+                            ]
+                          }
+                        },
+                        "required": [
+                          "caldavColor"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "google": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "hex": {
+                            "pattern": "^#[0-9a-fA-F]{6}$",
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "hex"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "outlook": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "outlookCategory": {
+                            "maxLength": 255,
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "outlookCategory"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  }
+                },
+                "type": "object"
+              },
+              "perTarget": {
+                "additionalProperties": {
+                  "anyOf": [
+                    {
+                      "type": "null"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "hex": {
+                          "pattern": "^#[0-9a-fA-F]{6}$",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "hex"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "outlookCategory": {
+                          "maxLength": 255,
+                          "minLength": 1,
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "outlookCategory"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "caldavColor": {
+                          "anyOf": [
+                            {
+                              "pattern": "^#[0-9a-fA-F]{6}$",
+                              "type": "string"
+                            },
+                            {
+                              "const": "__calendar__",
+                              "type": "string"
+                            }
+                          ]
+                        }
+                      },
+                      "required": [
+                        "caldavColor"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "propertyNames": {
+                  "maxLength": 1024,
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "type": "object"
+              },
+              "swatch": {
+                "anyOf": [
+                  {
+                    "pattern": "^#[0-9A-Fa-f]{6}$",
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "swatch"
+            ],
+            "type": "object"
+          },
+          "when": {
+            "additionalProperties": false,
+            "properties": {
+              "checks": {
+                "items": {
+                  "anyOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "enum": [
+                            "event.title",
+                            "event.description",
+                            "event.location",
+                            "calendar.name",
+                            "event.link",
+                            "event.meetingService",
+                            "event.dialIn",
+                            "event.meetingCodes",
+                            "event.meetingNotes",
+                            "event.guests",
+                            "event.organizer"
+                          ],
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "contains"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "minLength": 1,
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "enum": [
+                            "event.title",
+                            "event.description",
+                            "event.location",
+                            "calendar.name",
+                            "event.link",
+                            "event.meetingService",
+                            "event.dialIn",
+                            "event.meetingCodes",
+                            "event.meetingNotes",
+                            "event.guests",
+                            "event.organizer"
+                          ],
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "isEmpty",
+                            "isNotEmpty"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.guestCount",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 1000,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.duration",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 525600,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.timeOfDay",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 1439,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.weekday",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "isAnyOf",
+                            "isNoneOf"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "items": {
+                            "enum": [
+                              "mon",
+                              "tue",
+                              "wed",
+                              "thu",
+                              "fri",
+                              "sat",
+                              "sun"
+                            ],
+                            "type": "string"
+                          },
+                          "maxItems": 7,
+                          "minItems": 1,
+                          "type": "array"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.guestDomain",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "hasGuestFrom",
+                            "hasNoGuestFrom",
+                            "allGuestsFrom"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "account",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "format": "uuid",
+                          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "calendar",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "additionalProperties": false,
+                          "properties": {
+                            "accountId": {
+                              "format": "uuid",
+                              "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+                              "type": "string"
+                            },
+                            "providerCalendarId": {
+                              "minLength": 1,
+                              "type": "string"
+                            }
+                          },
+                          "required": [
+                            "accountId",
+                            "providerCalendarId"
+                          ],
+                          "type": "object"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.privacy",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "enum": [
+                            "default",
+                            "private",
+                            "public",
+                            "confidential"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.availability",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "enum": [
+                            "busy",
+                            "free"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "maxItems": 10,
+                "minItems": 1,
+                "type": "array"
+              },
+              "mode": {
+                "enum": [
+                  "all",
+                  "any"
+                ],
+                "type": "string"
+              }
+            },
+            "required": [
+              "mode",
+              "checks"
+            ],
+            "type": "object"
+          }
+        },
+        "required": [
+          "when",
+          "result"
+        ],
+        "type": "object"
+      },
+      "maxItems": 10,
+      "type": "array"
+    },
+    "otherwise": {
+      "additionalProperties": false,
+      "properties": {
+        "noAutomaticColor": {
+          "const": true,
+          "type": "boolean"
+        },
+        "outlookCategory": {
+          "maxLength": 255,
+          "type": "string"
+        },
+        "outlookCategoryFallbacks": {
+          "items": {
+            "maxLength": 255,
+            "type": "string"
+          },
+          "maxItems": 100,
+          "type": "array"
+        },
+        "perProvider": {
+          "additionalProperties": false,
+          "properties": {
+            "caldav": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "caldavColor": {
+                      "anyOf": [
+                        {
+                          "pattern": "^#[0-9a-fA-F]{6}$",
+                          "type": "string"
+                        },
+                        {
+                          "const": "__calendar__",
+                          "type": "string"
+                        }
+                      ]
+                    }
+                  },
+                  "required": [
+                    "caldavColor"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "google": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "hex": {
+                      "pattern": "^#[0-9a-fA-F]{6}$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "hex"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "outlook": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "outlookCategory": {
+                      "maxLength": 255,
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "outlookCategory"
+                  ],
+                  "type": "object"
+                }
+              ]
+            }
+          },
+          "type": "object"
+        },
+        "perTarget": {
+          "additionalProperties": {
+            "anyOf": [
+              {
+                "type": "null"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "hex": {
+                    "pattern": "^#[0-9a-fA-F]{6}$",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "hex"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "outlookCategory": {
+                    "maxLength": 255,
+                    "minLength": 1,
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "outlookCategory"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "caldavColor": {
+                    "anyOf": [
+                      {
+                        "pattern": "^#[0-9a-fA-F]{6}$",
+                        "type": "string"
+                      },
+                      {
+                        "const": "__calendar__",
+                        "type": "string"
+                      }
+                    ]
+                  }
+                },
+                "required": [
+                  "caldavColor"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "propertyNames": {
+            "maxLength": 1024,
+            "minLength": 1,
+            "type": "string"
+          },
+          "type": "object"
+        },
+        "swatch": {
+          "anyOf": [
+            {
+              "pattern": "^#[0-9A-Fa-f]{6}$",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        }
+      },
+      "required": [
+        "swatch"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "branches",
+    "otherwise"
+  ],
+  "type": "object"
+}

addedInput schema / properties / settings / properties / fieldExpressions / properties / color

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "branches": {
+      "items": {
+        "additionalProperties": false,
+        "properties": {
+          "result": {
+            "additionalProperties": false,
+            "properties": {
+              "noAutomaticColor": {
+                "const": true,
+                "type": "boolean"
+              },
+              "outlookCategory": {
+                "maxLength": 255,
+                "type": "string"
+              },
+              "outlookCategoryFallbacks": {
+                "items": {
+                  "maxLength": 255,
+                  "type": "string"
+                },
+                "maxItems": 100,
+                "type": "array"
+              },
+              "perProvider": {
+                "additionalProperties": false,
+                "properties": {
+                  "caldav": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "caldavColor": {
+                            "anyOf": [
+                              {
+                                "pattern": "^#[0-9a-fA-F]{6}$",
+                                "type": "string"
+                              },
+                              {
+                                "const": "__calendar__",
+                                "type": "string"
+                              }
+                            ]
+                          }
+                        },
+                        "required": [
+                          "caldavColor"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "google": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "hex": {
+                            "pattern": "^#[0-9a-fA-F]{6}$",
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "hex"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "outlook": {
+                    "anyOf": [
+                      {
+                        "type": "null"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "outlookCategory": {
+                            "maxLength": 255,
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "outlookCategory"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  }
+                },
+                "type": "object"
+              },
+              "perTarget": {
+                "additionalProperties": {
+                  "anyOf": [
+                    {
+                      "type": "null"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "hex": {
+                          "pattern": "^#[0-9a-fA-F]{6}$",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "hex"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "outlookCategory": {
+                          "maxLength": 255,
+                          "minLength": 1,
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "outlookCategory"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "caldavColor": {
+                          "anyOf": [
+                            {
+                              "pattern": "^#[0-9a-fA-F]{6}$",
+                              "type": "string"
+                            },
+                            {
+                              "const": "__calendar__",
+                              "type": "string"
+                            }
+                          ]
+                        }
+                      },
+                      "required": [
+                        "caldavColor"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "propertyNames": {
+                  "maxLength": 1024,
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "type": "object"
+              },
+              "swatch": {
+                "anyOf": [
+                  {
+                    "pattern": "^#[0-9A-Fa-f]{6}$",
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "swatch"
+            ],
+            "type": "object"
+          },
+          "when": {
+            "additionalProperties": false,
+            "properties": {
+              "checks": {
+                "items": {
+                  "anyOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "enum": [
+                            "event.title",
+                            "event.description",
+                            "event.location",
+                            "calendar.name",
+                            "event.link",
+                            "event.meetingService",
+                            "event.dialIn",
+                            "event.meetingCodes",
+                            "event.meetingNotes",
+                            "event.guests",
+                            "event.organizer"
+                          ],
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "contains"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "minLength": 1,
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "enum": [
+                            "event.title",
+                            "event.description",
+                            "event.location",
+                            "calendar.name",
+                            "event.link",
+                            "event.meetingService",
+                            "event.dialIn",
+                            "event.meetingCodes",
+                            "event.meetingNotes",
+                            "event.guests",
+                            "event.organizer"
+                          ],
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "isEmpty",
+                            "isNotEmpty"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.guestCount",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 1000,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.duration",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 525600,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.timeOfDay",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals",
+                            "greaterThan",
+                            "atLeast",
+                            "lessThan",
+                            "atMost"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "maximum": 1439,
+                          "minimum": 0,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.weekday",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "isAnyOf",
+                            "isNoneOf"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "items": {
+                            "enum": [
+                              "mon",
+                              "tue",
+                              "wed",
+                              "thu",
+                              "fri",
+                              "sat",
+                              "sun"
+                            ],
+                            "type": "string"
+                          },
+                          "maxItems": 7,
+                          "minItems": 1,
+                          "type": "array"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.guestDomain",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "hasGuestFrom",
+                            "hasNoGuestFrom",
+                            "allGuestsFrom"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "account",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "format": "uuid",
+                          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "calendar",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "additionalProperties": false,
+                          "properties": {
+                            "accountId": {
+                              "format": "uuid",
+                              "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+                              "type": "string"
+                            },
+                            "providerCalendarId": {
+                              "minLength": 1,
+                              "type": "string"
+                            }
+                          },
+                          "required": [
+                            "accountId",
+                            "providerCalendarId"
+                          ],
+                          "type": "object"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.privacy",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "enum": [
+                            "default",
+                            "private",
+                            "public",
+                            "confidential"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "field": {
+                          "const": "event.availability",
+                          "type": "string"
+                        },
+                        "op": {
+                          "enum": [
+                            "equals",
+                            "notEquals"
+                          ],
+                          "type": "string"
+                        },
+                        "value": {
+                          "enum": [
+                            "busy",
+                            "free"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "field",
+                        "op",
+                        "value"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "maxItems": 10,
+                "minItems": 1,
+                "type": "array"
+              },
+              "mode": {
+                "enum": [
+                  "all",
+                  "any"
+                ],
+                "type": "string"
+              }
+            },
+            "required": [
+              "mode",
+              "checks"
+            ],
+            "type": "object"
+          }
+        },
+        "required": [
+          "when",
+          "result"
+        ],
+        "type": "object"
+      },
+      "maxItems": 10,
+      "type": "array"
+    },
+    "otherwise": {
+      "additionalProperties": false,
+      "properties": {
+        "noAutomaticColor": {
+          "const": true,
+          "type": "boolean"
+        },
+        "outlookCategory": {
+          "maxLength": 255,
+          "type": "string"
+        },
+        "outlookCategoryFallbacks": {
+          "items": {
+            "maxLength": 255,
+            "type": "string"
+          },
+          "maxItems": 100,
+          "type": "array"
+        },
+        "perProvider": {
+          "additionalProperties": false,
+          "properties": {
+            "caldav": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "caldavColor": {
+                      "anyOf": [
+                        {
+                          "pattern": "^#[0-9a-fA-F]{6}$",
+                          "type": "string"
+                        },
+                        {
+                          "const": "__calendar__",
+                          "type": "string"
+                        }
+                      ]
+                    }
+                  },
+                  "required": [
+                    "caldavColor"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "google": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "hex": {
+                      "pattern": "^#[0-9a-fA-F]{6}$",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "hex"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "outlook": {
+              "anyOf": [
+                {
+                  "type": "null"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "outlookCategory": {
+                      "maxLength": 255,
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "outlookCategory"
+                  ],
+                  "type": "object"
+                }
+              ]
+            }
+          },
+          "type": "object"
+        },
+        "perTarget": {
+          "additionalProperties": {
+            "anyOf": [
+              {
+                "type": "null"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "hex": {
+                    "pattern": "^#[0-9a-fA-F]{6}$",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "hex"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "outlookCategory": {
+                    "maxLength": 255,
+                    "minLength": 1,
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "outlookCategory"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "caldavColor": {
+                    "anyOf": [
+                      {
+                        "pattern": "^#[0-9a-fA-F]{6}$",
+                        "type": "string"
+                      },
+                      {
+                        "const": "__calendar__",
+                        "type": "string"
+                      }
+                    ]
+                  }
+                },
+                "required": [
+                  "caldavColor"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "propertyNames": {
+            "maxLength": 1024,
+            "minLength": 1,
+            "type": "string"
+          },
+          "type": "object"
+        },
+        "swatch": {
+          "anyOf": [
+            {
+              "pattern": "^#[0-9A-Fa-f]{6}$",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        }
+      },
+      "required": [
+        "swatch"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "branches",
+    "otherwise"
+  ],
+  "type": "object"
+}

addedInput schema / properties / settings / properties / outlookCategoryFallbacks

Added value: +{
+  "items": {
+    "maxLength": 255,
+    "minLength": 1,
+    "type": "string"
+  },
+  "maxItems": 100,
+  "type": "array"
+}

addedInput schema / properties / settings / properties / preserveCopyColors
```
Added value: +{
+  "type": "boolean"
+}
```

addedInput schema / properties / settings / properties / preserveCopyColorsTargets

Added value: +{
+  "items": {
+    "maxLength": 512,
+    "minLength": 1,
+    "type": "string"
+  },
+  "maxItems": 100,
+  "type": "array"
+}

addedInput schema / properties / settings / properties / providerColorChoices

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "caldav": {
+      "anyOf": [
+        {
+          "type": "null"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "caldavColor": {
+              "anyOf": [
+                {
+                  "pattern": "^#([0-9a-fA-F]{6})$",
+                  "type": "string"
+                },
+                {
+                  "const": "__calendar__",
+                  "type": "string"
+                }
+              ]
+            }
+          },
+          "required": [
+            "caldavColor"
+          ],
+          "type": "object"
+        }
+      ]
+    },
+    "google": {
+      "anyOf": [
+        {
+          "type": "null"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "hex": {
+              "pattern": "^#([0-9a-fA-F]{6})$",
+              "type": "string"
+            }
+          },
+          "required": [
+            "hex"
+          ],
+          "type": "object"
+        }
+      ]
+    },
+    "outlook": {
+      "anyOf": [
+        {
+          "type": "null"
+        },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "outlookCategory": {
+              "maxLength": 255,
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "outlookCategory"
+          ],
+          "type": "object"
+        }
+      ]
+    }
+  },
+  "type": "object"
+}

addedInput schema / properties / settings / properties / targetColorChoices

Added value: +{
+  "additionalProperties": {
+    "anyOf": [
+      {
+        "type": "null"
+      },
+      {
+        "additionalProperties": false,
+        "properties": {
+          "hex": {
+            "pattern": "^#([0-9a-fA-F]{6})$",
+            "type": "string"
+          }
+        },
+        "required": [
+          "hex"
+        ],
+        "type": "object"
+      },
+      {
+        "additionalProperties": false,
+        "properties": {
+          "outlookCategory": {
+            "maxLength": 255,
+            "minLength": 1,
+            "type": "string"
+          }
+        },
+        "required": [
+          "outlookCategory"
+        ],
+        "type": "object"
+      },
+      {
+        "additionalProperties": false,
+        "properties": {
+          "caldavColor": {
+            "anyOf": [
+              {
+                "pattern": "^#([0-9a-fA-F]{6})$",
+                "type": "string"
+              },
+              {
+                "const": "__calendar__",
+                "type": "string"
+              }
+            ]
+          }
+        },
+        "required": [
+          "caldavColor"
+        ],
+        "type": "object"
+      }
+    ]
+  },
+  "propertyNames": {
+    "maxLength": 1024,
+    "minLength": 1,
+    "type": "string"
+  },
+  "type": "object"
+}

First observedOct 20, 2026

TDQS

A3.7/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The annotations already mark the tool as non-read-only and non-destructive. The description adds meaningful behavior beyond that: default values, returned fields, and plan-gated settings that produce FORBIDDEN errors. It does not state whether a new sync starts running immediately or other side effects of creation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded and compact: purpose first, then calendar reference guidance, return value, defaults, and plan gates. Every paragraph adds useful information without wasted prose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a complex tool with 10 top-level parameters, deep nested objects, 0% schema description coverage, and no output schema, the description covers the essentials but not the full complexity. It does not explain most nested settings or clarify the behavioral semantics of many options.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must carry parameter meaning. It explains the required calendars pair format and gives defaults for direction, titleMode, privacy, and initialSyncRange, plus plan gates for some settings. However, most top-level and deeply nested settings parameters remain unexplained, including option semantics for direction, titleMode, copyAttendees, and the large settings object.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: 'Create a new sync process spanning two or more calendars.' This clearly distinguishes creation from sibling update/preview operations, though it does not explicitly name the alternative tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives useful context: use list_available_calendars to discover calendar references, sensible defaults, and plan-gate rules with the FORBIDDEN outcome. It does not explicitly say when not to use create_sync versus update_sync or preview_sync_edit.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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