FrankKi

Briefdesign ansehen

letter_design_preview

Read-only

Rendert ein gespeichertes oder inline übergebenes Briefdesign (schemaVersion 1 oder 2) mit demselben Composer wie ein echter Versand, mit echten Absenderdaten, erfundenem Empfänger und Beispieltext. Liefert eine Inline-PNG-Seite, Seite 2 nur für continuationHeader, mit pages 0 nur Links. sampleVariant empty zeigt das Briefpapier allein, wie im Dashboard. So siehst du vorab Kündigung, Rechnung, Mahnung, Angebot, Vertrag und Behördenpost auf diesem Briefpapier. Kostenfrei, der Brief bleibt ein Entwurf. EN: Renders a saved or inline letter design (schemaVersion 1 or 2) with the same composer as a real send, using real sender data, a fictional recipient and sample text. Returns one inline PNG page, page 2 only for continuationHeader, links only with pages 0. sampleVariant empty shows the stationery alone, as in the dashboard. It previews a cancellation, invoice, payment reminder, quote, contract or letter to a public authority on this stationery. Free of charge; the letter stays a draft.

Input Schema

Name	Required	Description	Default
`pages`	No	Standard 1, Seite 2 nur mit continuationHeader, 0 nur Links. EN: Default 1, page 2 only with continuationHeader, 0 links only.
`design`	No
`designId`	No
`reasoning`	No
`reference`	No
`resolution`	No
`sampleContent`	No
`sampleSubject`	No
`sampleVariant`	No	typical zeigt eine volle Beispielseite, empty das Briefpapier allein mit freier Textfläche. sampleContent geht vor. EN: typical shows a full example page, empty the stationery alone with an open text area. sampleContent takes precedence.	typical

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 28, 2026

changedInput schema / properties / design / oneOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "barcode": {
-        "additionalProperties": false,
-        "properties": {
-          "enabled": {
-            "default": false,
-            "type": "boolean"
-          },
-          "marginRightYMm": {
-            "default": 100,
-            "maximum": 270,
-            "minimum": 92,
-            "type": "number"
-          },
-          "payloadTemplate": {
-            "maxLength": 512,
-            "minLength": 1,
-            "type": "string"
-          },
-          "placement": {
-            "default": "infoblock",
-            "enum": [
-              "infoblock",
-              "footer-right",
-              "margin-right"
-            ],
-            "type": "string"
-          },
-          "sizeMm": {
-            "default": 22,
-            "maximum": 40,
-            "minimum": 12,
-            "type": "number"
-          },
-          "type": {
-            "default": "qr",
-            "enum": [
-              "qr",
-              "code128"
-            ],
-            "type": "string"
-          },
-          "widthMm": {
-            "default": 50,
-            "maximum": 90,
-            "minimum": 20,
-            "type": "number"
-          }
-        },
-        "type": "object"
-      },
-      "chrome": {
-        "additionalProperties": false,
-        "properties": {
-          "dateLine": {
-            "type": "boolean"
-          },
-          "recipientBlock": {
-            "type": "boolean"
-          },
-          "subjectLine": {
-            "type": "boolean"
-          }
-        },
-        "type": "object"
-      },
-      "continuation": {
-        "additionalProperties": false,
-        "properties": {
-          "enabled": {
-            "default": false,
-            "type": "boolean"
-          },
-          "headerLine": {
-            "default": true,
-            "type": "boolean"
-          }
-        },
-        "type": "object"
-      },
-      "documentMode": {
-        "enum": [
-          "letter",
-          "form"
-        ],
-        "type": "string"
-      },
-      "falzmarken": {
-        "additionalProperties": false,
-        "properties": {
-          "enabled": {
-            "default": false,
-            "type": "boolean"
-          },
-          "falz": {
-            "default": true,
-            "type": "boolean"
-          },
-          "lochmarke": {
-            "default": true,
-            "type": "boolean"
-          }
-        },
-        "type": "object"
-      },
-      "footer": {
-        "additionalProperties": false,
-        "properties": {
-          "columns": {
-            "items": {
-              "items": {
-                "maxLength": 120,
-                "type": "string"
-              },
-              "maxItems": 8,
-              "minItems": 1,
-              "type": "array"
-            },
-            "maxItems": 4,
-            "minItems": 1,
-            "type": "array"
-          },
-          "enabled": {
-            "default": false,
-            "type": "boolean"
-          },
-          "fontSizePt": {
-            "default": 7,
-            "maximum": 9,
-            "minimum": 6,
-            "type": "number"
-          },
-          "scope": {
-            "default": "first-page",
-            "enum": [
-              "first-page",
-              "all-letter-pages"
-            ],
-            "type": "string"
-          },
-          "topMm": {
-            "default": 272,
-            "maximum": 285,
-            "minimum": 250,
-            "type": "number"
-          }
-        },
-        "required": [
-          "columns"
-        ],
-        "type": "object"
-      },
-      "header": {
-        "additionalProperties": false,
-        "properties": {
-          "heightMm": {
-            "maximum": 120,
-            "minimum": 5,
-            "type": "number"
-          },
-          "letterheadId": {
-            "anyOf": [
-              {
-                "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)$",
-                "type": "string"
-              },
-              {
-                "type": "null"
-              }
-            ]
-          },
-          "offsetXMm": {
-            "default": 0,
-            "maximum": 170,
-            "minimum": 0,
-            "type": "number"
-          },
-          "offsetYMm": {
-            "default": 8,
-            "maximum": 40,
-            "minimum": 0,
-            "type": "number"
-          },
-          "placement": {
-            "default": "top",
-            "enum": [
-              "top",
-              "logo-right",
-              "full"
-            ],
-            "type": "string"
-          },
-          "replaceSenderBlock": {
-            "default": false,
-            "type": "boolean"
-          },
-          "widthMm": {
-            "default": 165,
-            "maximum": 210,
-            "minimum": 10,
-            "type": "number"
-          }
-        },
-        "type": "object"
-      },
-      "infoblock": {
-        "additionalProperties": false,
-        "properties": {
-          "enabled": {
-            "default": false,
-            "type": "boolean"
-          },
-          "fontSizePt": {
-            "default": 8,
-            "maximum": 10,
-            "minimum": 7,
-            "type": "number"
-          },
-          "labelWidthMm": {
-            "default": 28,
-            "maximum": 40,
-            "minimum": 15,
-            "type": "number"
-          },
-          "rows": {
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "key": {
-                  "pattern": "^[a-z][a-z0-9_]{0,30}$",
-                  "type": "string"
-                },
-                "label": {
-                  "maxLength": 120,
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "staticValue": {
-                  "anyOf": [
-                    {
-                      "maxLength": 200,
-                      "type": "string"
-                    },
-                    {
-                      "type": "null"
-                    }
-                  ]
-                }
-              },
-              "required": [
-                "key",
-                "label"
-              ],
-              "type": "object"
-            },
-            "maxItems": 12,
-            "minItems": 1,
-            "type": "array"
-          },
-          "topMm": {
-            "default": 45,
-            "maximum": 90,
-            "minimum": 32,
-            "type": "number"
-          },
-          "valueWidthMm": {
-            "default": 37,
-            "maximum": 55,
-            "minimum": 20,
-            "type": "number"
-          },
-          "xMm": {
-            "default": 125,
-            "maximum": 170,
-            "minimum": 118,
-            "type": "number"
-          }
-        },
-        "required": [
-          "rows"
-        ],
-        "type": "object"
-      },
-      "marginText": {
-        "additionalProperties": false,
-        "properties": {
-          "fontSizePt": {
-            "default": 6,
-            "maximum": 9,
-            "minimum": 5,
-            "type": "number"
-          },
-          "rotationDeg": {
-            "anyOf": [
-              {
-                "const": 90,
-                "type": "number"
-              },
-              {
-                "const": 270,
-                "type": "number"
-              }
-            ],
-            "default": 90
-          },
-          "side": {
-            "default": "left",
-            "enum": [
-              "left",
-              "right"
-            ],
-            "type": "string"
-          },
-          "text": {
-            "maxLength": 160,
-            "minLength": 1,
-            "type": "string"
-          }
-        },
-        "required": [
-          "text"
-        ],
-        "type": "object"
-      },
-      "schemaVersion": {
-        "const": 1,
-        "type": "number"
-      }
-    },
-    "required": [
-      "schemaVersion"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Native v2 authoring schema. Standard JSON Schema covers shape, defaults, native enums, asset and box dependencies. Runtime Zod validation remains authoritative for template grammar, duplicate element ids, and arithmetic A4 placement.",
-    "properties": {
-      "body": {
-        "additionalProperties": false,
-        "properties": {
-          "font": {
-            "anyOf": [
-              {
-                "enum": [
-                  "serif",
-                  "humanist-sans",
-                  "grotesk",
-                  "mono"
-                ],
-                "type": "string"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "token": {
-                    "const": "brand.font",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "token"
-                ],
-                "type": "object"
-              }
-            ]
-          },
-          "lineHeightPt": {
-            "maximum": 30,
-            "minimum": 7,
-            "type": "number"
-          },
-          "senderBlockStyle": {
-            "default": "inherit",
-            "enum": [
-              "inherit",
-              "compact",
-              "hidden"
-            ],
-            "type": "string"
-          },
-          "sizePt": {
-            "maximum": 18,
-            "minimum": 6,
-            "type": "number"
-          }
-        },
-        "required": [
-          "font",
-          "sizePt",
-          "lineHeightPt"
-        ],
-        "type": "object"
-      },
-      "furniture": {
-        "additionalProperties": false,
-        "properties": {
-          "barcode": {
-            "additionalProperties": false,
-            "properties": {
-              "enabled": {
-                "default": false,
-                "type": "boolean"
-              },
-              "marginRightYMm": {
-                "default": 100,
-                "maximum": 270,
-                "minimum": 92,
-                "type": "number"
-              },
-              "payloadTemplate": {
-                "maxLength": 512,
-                "minLength": 1,
-                "type": "string"
-              },
-              "placement": {
-                "default": "infoblock",
-                "enum": [
-                  "infoblock",
-                  "footer-right",
-                  "margin-right"
-                ],
-                "type": "string"
-              },
-              "sizeMm": {
-                "default": 22,
-                "maximum": 40,
-                "minimum": 12,
-                "type": "number"
-              },
-              "type": {
-                "default": "qr",
-                "enum": [
-                  "qr",
-                  "code128"
-                ],
-                "type": "string"
-              },
-              "widthMm": {
-                "default": 50,
-                "maximum": 90,
-                "minimum": 20,
-                "type": "number"
-              }
-            },
-            "type": "object"
-          },
-          "chrome": {
-            "additionalProperties": false,
-            "properties": {
-              "dateLine": {
-                "type": "boolean"
-              },
-              "recipientBlock": {
-                "type": "boolean"
-              },
-              "subjectLine": {
-                "type": "boolean"
-              }
-            },
-            "type": "object"
-          },
-          "continuation": {
-            "additionalProperties": false,
-            "properties": {
-              "enabled": {
-                "default": false,
-                "type": "boolean"
-              },
-              "headerLine": {
-                "default": true,
-                "type": "boolean"
-              }
-            },
-            "type": "object"
-          },
-          "documentMode": {
-            "enum": [
-              "letter",
-              "form"
-            ],
-            "type": "string"
-          },
-          "falzmarken": {
-            "additionalProperties": false,
-            "properties": {
-              "enabled": {
-                "default": false,
-                "type": "boolean"
-              },
-              "falz": {
-                "default": true,
-                "type": "boolean"
-              },
-              "lochmarke": {
-                "default": true,
-                "type": "boolean"
-              }
-            },
-            "type": "object"
-          },
-          "infoblock": {
-            "additionalProperties": false,
-            "properties": {
-              "enabled": {
-                "default": false,
-                "type": "boolean"
-              },
-              "fontSizePt": {
-                "default": 8,
-                "maximum": 10,
-                "minimum": 7,
-                "type": "number"
-              },
-              "labelWidthMm": {
-                "default": 28,
-                "maximum": 40,
-                "minimum": 15,
-                "type": "number"
-              },
-              "rows": {
-                "items": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "key": {
-                      "pattern": "^[a-z][a-z0-9_]{0,30}$",
-                      "type": "string"
-                    },
-                    "label": {
-                      "maxLength": 120,
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "staticValue": {
-                      "anyOf": [
-                        {
-                          "maxLength": 200,
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ]
-                    }
-                  },
-                  "required": [
-                    "key",
-                    "label"
-                  ],
-                  "type": "object"
-                },
-                "maxItems": 12,
-                "minItems": 1,
-                "type": "array"
-              },
-              "topMm": {
-                "default": 45,
-                "maximum": 90,
-                "minimum": 32,
-                "type": "number"
-              },
-              "valueWidthMm": {
-                "default": 37,
-                "maximum": 55,
-                "minimum": 20,
-                "type": "number"
-              },
-              "xMm": {
-                "default": 125,
-                "maximum": 170,
-                "minimum": 118,
-                "type": "number"
-              }
-            },
-            "required": [
-              "rows"
-            ],
-            "type": "object"
-          }
-        },
-        "type": "object"
-      },
-      "schemaVersion": {
-        "const": 2,
-        "type": "number"
-      },
-      "zones": {
-        "additionalProperties": false,
-        "properties": {
-          "continuationHeader": {
-            "$ref": "#/$defs/letterDesignV2Zone"
-          },
-          "footer": {
-            "$ref": "#/$defs/letterDesignV2Zone"
-          },
-          "header": {
-            "additionalProperties": false,
-            "properties": {
-              "elements": {
-                "default": [],
-                "items": {
-                  "oneOf": [
-                    {
-                      "additionalProperties": false,
-                      "allOf": [
-                        {
-                          "if": {
-                            "properties": {
-                              "source": {
-                                "const": "asset"
-                              }
-                            },
-                            "required": [
-                              "source"
-                            ]
-                          },
-                          "then": {
-                            "properties": {
-                              "assetId": {
-                                "format": "uuid",
-                                "type": "string"
-                              }
-                            },
-                            "required": [
-                              "assetId"
-                            ]
-                          }
-                        }
-                      ],
-                      "properties": {
-                        "anchor": {
-                          "default": "top-left",
-                          "enum": [
-                            "top-left",
-                            "top-center",
-                            "top-right",
-                            "center-left",
-                            "center",
-                            "center-right",
-                            "bottom-left",
-                            "bottom-center",
-                            "bottom-right"
-                          ],
-                          "type": "string"
-                        },
-                        "assetId": {
-                          "anyOf": [
-                            {
-                              "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"
-                            },
-                            {
-                              "type": "null"
-                            }
-                          ]
-                        },
-                        "fit": {
-                          "default": "contain",
-                          "enum": [
-                            "contain",
-                            "cover",
-                            "stretch"
-                          ],
-                          "type": "string"
-                        },
-                        "heightMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 297,
-                          "type": "number"
-                        },
-                        "id": {
-                          "pattern": "^[a-z][a-z0-9_-]{0,63}$",
-                          "type": "string"
-                        },
-                        "offsetXMm": {
-                          "default": 0,
-                          "maximum": 210,
-                          "minimum": -210,
-                          "type": "number"
-                        },
-                        "offsetYMm": {
-                          "default": 0,
-                          "maximum": 297,
-                          "minimum": -297,
-                          "type": "number"
-                        },
-                        "rotationDeg": {
-                          "anyOf": [
-                            {
-                              "const": 0,
-                              "type": "number"
-                            },
-                            {
-                              "const": 90,
-                              "type": "number"
-                            },
-                            {
-                              "const": 180,
-                              "type": "number"
-                            },
-                            {
-                              "const": 270,
-                              "type": "number"
-                            }
-                          ],
-                          "default": 0
-                        },
-                        "source": {
-                          "enum": [
-                            "asset",
-                            "brand.logo",
-                            "brand.logoDark"
-                          ],
-                          "type": "string"
-                        },
-                        "type": {
-                          "const": "image",
-                          "type": "string"
-                        },
-                        "widthMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 210,
-                          "type": "number"
-                        },
-                        "zOrder": {
-                          "default": 0,
-                          "maximum": 100,
-                          "minimum": -100,
-                          "type": "integer"
-                        }
-                      },
-                      "required": [
-                        "id",
-                        "widthMm",
-                        "heightMm",
-                        "type",
-                        "source"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "anchor": {
-                          "default": "top-left",
-                          "enum": [
-                            "top-left",
-                            "top-center",
-                            "top-right",
-                            "center-left",
-                            "center",
-                            "center-right",
-                            "bottom-left",
-                            "bottom-center",
-                            "bottom-right"
-                          ],
-                          "type": "string"
-                        },
-                        "contentMode": {
-                          "default": "template",
-                          "enum": [
-                            "template"
-                          ],
-                          "type": "string"
-                        },
-                        "heightMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 297,
-                          "type": "number"
-                        },
-                        "id": {
-                          "pattern": "^[a-z][a-z0-9_-]{0,63}$",
-                          "type": "string"
-                        },
-                        "offsetXMm": {
-                          "default": 0,
-                          "maximum": 210,
-                          "minimum": -210,
-                          "type": "number"
-                        },
-                        "offsetYMm": {
-                          "default": 0,
-                          "maximum": 297,
-                          "minimum": -297,
-                          "type": "number"
-                        },
-                        "rotationDeg": {
-                          "anyOf": [
-                            {
-                              "const": 0,
-                              "type": "number"
-                            },
-                            {
-                              "const": 90,
-                              "type": "number"
-                            },
-                            {
-                              "const": 180,
-                              "type": "number"
-                            },
-                            {
-                              "const": 270,
-                              "type": "number"
-                            }
-                          ],
-                          "default": 0
-                        },
-                        "style": {
-                          "additionalProperties": false,
-                          "properties": {
-                            "align": {
-                              "default": "left",
-                              "enum": [
-                                "left",
-                                "center",
-                                "right"
-                              ],
-                              "type": "string"
-                            },
-                            "case": {
-                              "default": "none",
-                              "enum": [
-                                "none",
-                                "upper",
-                                "lower",
-                                "title"
-                              ],
-                              "type": "string"
-                            },
-                            "color": {
-                              "anyOf": [
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "b": {
-                                      "maximum": 1,
-                                      "minimum": 0,
-                                      "type": "number"
-                                    },
-                                    "g": {
-                                      "maximum": 1,
-                                      "minimum": 0,
-                                      "type": "number"
-                                    },
-                                    "r": {
-                                      "maximum": 1,
-                                      "minimum": 0,
-                                      "type": "number"
-                                    }
-                                  },
-                                  "required": [
-                                    "r",
-                                    "g",
-                                    "b"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "token": {
-                                      "enum": [
-                                        "brand.primary",
-                                        "brand.accent",
-                                        "brand.text"
-                                      ],
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "token"
-                                  ],
-                                  "type": "object"
-                                }
-                              ]
-                            },
-                            "family": {
-                              "anyOf": [
-                                {
-                                  "enum": [
-                                    "serif",
-                                    "humanist-sans",
-                                    "grotesk",
-                                    "mono"
-                                  ],
-                                  "type": "string"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "token": {
-                                      "const": "brand.font",
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "token"
-                                  ],
-                                  "type": "object"
-                                }
-                              ]
-                            },
-                            "letterSpacing": {
-                              "default": 0,
-                              "maximum": 10,
-                              "minimum": -2,
-                              "type": "number"
-                            },
-                            "lineHeightPt": {
-                              "maximum": 100,
-                              "minimum": 5,
-                              "type": "number"
-                            },
-                            "sizePt": {
-                              "maximum": 72,
-                              "minimum": 5,
-                              "type": "number"
-                            },
-                            "weight": {
-                              "default": "regular",
-                              "enum": [
-                                "regular",
-                                "medium",
-                                "semibold",
-                                "bold"
-                              ],
-                              "type": "string"
-                            }
-                          },
-                          "required": [
-                            "family",
-                            "sizePt",
-                            "lineHeightPt",
-                            "color"
-                          ],
-                          "type": "object"
-                        },
-                        "text": {
-                          "maxLength": 4000,
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "type": {
-                          "const": "text",
-                          "type": "string"
-                        },
-                        "widthMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 210,
-                          "type": "number"
-                        },
-                        "zOrder": {
-                          "default": 0,
-                          "maximum": 100,
-                          "minimum": -100,
-                          "type": "integer"
-                        }
-                      },
-                      "required": [
-                        "id",
-                        "widthMm",
-                        "heightMm",
-                        "type",
-                        "text",
-                        "style"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "anchor": {
-                          "default": "top-left",
-                          "enum": [
-                            "top-left",
-                            "top-center",
-                            "top-right",
-                            "center-left",
-                            "center",
-                            "center-right",
-                            "bottom-left",
-                            "bottom-center",
-                            "bottom-right"
-                          ],
-                          "type": "string"
-                        },
-                        "color": {
-                          "anyOf": [
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "b": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "g": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "r": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "r",
-                                "g",
-                                "b"
-                              ],
-                              "type": "object"
-                            },
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "token": {
-                                  "enum": [
-                                    "brand.primary",
-                                    "brand.accent",
-                                    "brand.text"
-                                  ],
-                                  "type": "string"
-                                }
-                              },
-                              "required": [
-                                "token"
-                              ],
-                              "type": "object"
-                            }
-                          ]
-                        },
-                        "heightMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 297,
-                          "type": "number"
-                        },
-                        "id": {
-                          "pattern": "^[a-z][a-z0-9_-]{0,63}$",
-                          "type": "string"
-                        },
-                        "offsetXMm": {
-                          "default": 0,
-                          "maximum": 210,
-                          "minimum": -210,
-                          "type": "number"
-                        },
-                        "offsetYMm": {
-                          "default": 0,
-                          "maximum": 297,
-                          "minimum": -297,
-                          "type": "number"
-                        },
-                        "orientation": {
-                          "enum": [
-                            "horizontal",
-                            "vertical"
-                          ],
-                          "type": "string"
-                        },
-                        "rotationDeg": {
-                          "anyOf": [
-                            {
-                              "const": 0,
-                              "type": "number"
-                            },
-                            {
-                              "const": 90,
-                              "type": "number"
-                            },
-                            {
-                              "const": 180,
-                              "type": "number"
-                            },
-                            {
-                              "const": 270,
-                              "type": "number"
-                            }
-                          ],
-                          "default": 0
-                        },
-                        "thicknessMm": {
-                          "maximum": 10,
-                          "minimum": 0.1,
-                          "type": "number"
-                        },
-                        "type": {
-                          "const": "rule",
-                          "type": "string"
-                        },
-                        "widthMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 210,
-                          "type": "number"
-                        },
-                        "zOrder": {
-                          "default": 0,
-                          "maximum": 100,
-                          "minimum": -100,
-                          "type": "integer"
-                        }
-                      },
-                      "required": [
-                        "id",
-                        "widthMm",
-                        "heightMm",
-                        "type",
-                        "orientation",
-                        "thicknessMm",
-                        "color"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "anyOf": [
-                        {
-                          "required": [
-                            "fillColor"
-                          ]
-                        },
-                        {
-                          "required": [
-                            "strokeColor"
-                          ]
-                        }
-                      ],
-                      "dependentRequired": {
-                        "strokeWidthMm": [
-                          "strokeColor"
-                        ]
-                      },
-                      "properties": {
-                        "anchor": {
-                          "default": "top-left",
-                          "enum": [
-                            "top-left",
-                            "top-center",
-                            "top-right",
-                            "center-left",
-                            "center",
-                            "center-right",
-                            "bottom-left",
-                            "bottom-center",
-                            "bottom-right"
-                          ],
-                          "type": "string"
-                        },
-                        "cornerRadiusMm": {
-                          "default": 0,
-                          "maximum": 50,
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "fillColor": {
-                          "anyOf": [
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "b": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "g": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "r": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "r",
-                                "g",
-                                "b"
-                              ],
-                              "type": "object"
-                            },
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "token": {
-                                  "enum": [
-                                    "brand.primary",
-                                    "brand.accent",
-                                    "brand.text"
-                                  ],
-                                  "type": "string"
-                                }
-                              },
-                              "required": [
-                                "token"
-                              ],
-                              "type": "object"
-                            }
-                          ]
-                        },
-                        "heightMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 297,
-                          "type": "number"
-                        },
-                        "id": {
-                          "pattern": "^[a-z][a-z0-9_-]{0,63}$",
-                          "type": "string"
-                        },
-                        "offsetXMm": {
-                          "default": 0,
-                          "maximum": 210,
-                          "minimum": -210,
-                          "type": "number"
-                        },
-                        "offsetYMm": {
-                          "default": 0,
-                          "maximum": 297,
-                          "minimum": -297,
-                          "type": "number"
-                        },
-                        "rotationDeg": {
-                          "anyOf": [
-                            {
-                              "const": 0,
-                              "type": "number"
-                            },
-                            {
-                              "const": 90,
-                              "type": "number"
-                            },
-                            {
-                              "const": 180,
-                              "type": "number"
-                            },
-                            {
-                              "const": 270,
-                              "type": "number"
-                            }
-                          ],
-                          "default": 0
-                        },
-                        "strokeColor": {
-                          "anyOf": [
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "b": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "g": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "r": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "r",
-                                "g",
-                                "b"
-                              ],
-                              "type": "object"
-                            },
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "token": {
-                                  "enum": [
-                                    "brand.primary",
-                                    "brand.accent",
-                                    "brand.text"
-                                  ],
-                                  "type": "string"
-                                }
-                              },
-                              "required": [
-                                "token"
-                              ],
-                              "type": "object"
-                            }
-                          ]
-                        },
-                        "strokeWidthMm": {
-                          "maximum": 10,
-                          "minimum": 0.1,
-                          "type": "number"
-                        },
-                        "type": {
-                          "const": "box",
-                          "type": "string"
-                        },
-                        "widthMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 210,
-                          "type": "number"
-                        },
-                        "zOrder": {
-                          "default": 0,
-                          "maximum": 100,
-                          "minimum": -100,
-                          "type": "integer"
-                        }
-                      },
-                      "required": [
-                        "id",
-                        "widthMm",
-                        "heightMm",
-                        "type"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "anchor": {
-                          "default": "top-left",
-                          "enum": [
-                            "top-left",
-                            "top-center",
-                            "top-right",
-                            "center-left",
-                            "center",
-                            "center-right",
-                            "bottom-left",
-                            "bottom-center",
-                            "bottom-right"
-                          ],
-                          "type": "string"
-                        },
-                        "heightMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 297,
-                          "type": "number"
-                        },
-                        "id": {
-                          "pattern": "^[a-z][a-z0-9_-]{0,63}$",
-                          "type": "string"
-                        },
-                        "offsetXMm": {
-                          "default": 0,
-                          "maximum": 210,
-                          "minimum": -210,
-                          "type": "number"
-                        },
-                        "offsetYMm": {
-                          "default": 0,
-                          "maximum": 297,
-                          "minimum": -297,
-                          "type": "number"
-                        },
-                        "rotationDeg": {
-                          "anyOf": [
-                            {
-                              "const": 0,
-                              "type": "number"
-                            },
-                            {
-                              "const": 90,
-                              "type": "number"
-                            },
-                            {
-                              "const": 180,
-                              "type": "number"
-                            },
-                            {
-                              "const": 270,
-                              "type": "number"
-                            }
-                          ],
-                          "default": 0
-                        },
-                        "type": {
-                          "const": "spacer",
-                          "type": "string"
-                        },
-                        "widthMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 210,
-                          "type": "number"
-                        },
-                        "zOrder": {
-                          "default": 0,
-                          "maximum": 100,
-                          "minimum": -100,
-                          "type": "integer"
-                        }
-                      },
-                      "required": [
-                        "id",
-                        "widthMm",
-                        "heightMm",
-                        "type"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "anchor": {
-                          "default": "top-left",
-                          "enum": [
-                            "top-left",
-                            "top-center",
-                            "top-right",
-                            "center-left",
-                            "center",
-                            "center-right",
-                            "bottom-left",
-                            "bottom-center",
-                            "bottom-right"
-                          ],
-                          "type": "string"
-                        },
-                        "backgroundColor": {
-                          "anyOf": [
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "b": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "g": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "r": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "r",
-                                "g",
-                                "b"
-                              ],
-                              "type": "object"
-                            },
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "token": {
-                                  "enum": [
-                                    "brand.primary",
-                                    "brand.accent",
-                                    "brand.text"
-                                  ],
-                                  "type": "string"
-                                }
-                              },
-                              "required": [
-                                "token"
-                              ],
-                              "type": "object"
-                            }
-                          ],
-                          "default": {
-                            "b": 1,
-                            "g": 1,
-                            "r": 1
-                          }
-                        },
-                        "foregroundColor": {
-                          "anyOf": [
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "b": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "g": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "r": {
-                                  "maximum": 1,
-                                  "minimum": 0,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "r",
-                                "g",
-                                "b"
-                              ],
-                              "type": "object"
-                            },
-                            {
-                              "additionalProperties": false,
-                              "properties": {
-                                "token": {
-                                  "enum": [
-                                    "brand.primary",
-                                    "brand.accent",
-                                    "brand.text"
-                                  ],
-                                  "type": "string"
-                                }
-                              },
-                              "required": [
-                                "token"
-                              ],
-                              "type": "object"
-                            }
-                          ],
-                          "default": {
-                            "b": 0,
-                            "g": 0,
-                            "r": 0
-                          }
-                        },
-                        "format": {
-                          "enum": [
-                            "qr",
-                            "code128"
-                          ],
-                          "type": "string"
-                        },
-                        "heightMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 297,
-                          "type": "number"
-                        },
-                        "id": {
-                          "pattern": "^[a-z][a-z0-9_-]{0,63}$",
-                          "type": "string"
-                        },
-                        "offsetXMm": {
-                          "default": 0,
-                          "maximum": 210,
-                          "minimum": -210,
-                          "type": "number"
-                        },
-                        "offsetYMm": {
-                          "default": 0,
-                          "maximum": 297,
-                          "minimum": -297,
-                          "type": "number"
-                        },
-                        "payloadTemplate": {
-                          "maxLength": 512,
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "rotationDeg": {
-                          "anyOf": [
-                            {
-                              "const": 0,
-                              "type": "number"
-                            },
-                            {
-                              "const": 90,
-                              "type": "number"
-                            },
-                            {
-                              "const": 180,
-                              "type": "number"
-                            },
-                            {
-                              "const": 270,
-                              "type": "number"
-                            }
-                          ],
-                          "default": 0
-                        },
-                        "type": {
-                          "const": "barcode",
-                          "type": "string"
-                        },
-                        "widthMm": {
-                          "exclusiveMinimum": 0,
-                          "maximum": 210,
-                          "type": "number"
-                        },
-                        "zOrder": {
-                          "default": 0,
-                          "maximum": 100,
-                          "minimum": -100,
-                          "type": "integer"
-                        }
-                      },
-                      "required": [
-                        "id",
-                        "widthMm",
-                        "heightMm",
-                        "type",
-                        "format",
-                        "payloadTemplate"
-                      ],
-                      "type": "object"
-                    }
-                  ]
-                },
-                "maxItems": 64,
-                "type": "array"
-              },
-              "reservedBox": {
-                "additionalProperties": false,
-                "properties": {
-                  "heightMm": {
-                    "exclusiveMinimum": 0,
-                    "maximum": 297,
-                    "type": "number"
-                  },
-                  "widthMm": {
-                    "exclusiveMinimum": 0,
-                    "maximum": 210,
-                    "type": "number"
-                  },
-                  "xMm": {
-                    "maximum": 210,
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "yMm": {
-                    "maximum": 297,
-                    "minimum": 0,
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "xMm",
-                  "yMm",
-                  "widthMm",
-                  "heightMm"
-                ],
-                "type": "object"
-              }
-            },
-            "required": [
-              "reservedBox"
-            ],
-            "type": "object"
-          },
-          "sidebar": {
-            "$ref": "#/$defs/letterDesignV2Zone"
-          },
-          "watermark": {
-            "$ref": "#/$defs/letterDesignV2Zone"
-          }
-        },
-        "type": "object"
-      }
-    },
-    "required": [
-      "schemaVersion",
-      "zones",
-      "body"
-    ],
-    "semanticValidation": {
-      "authority": "designV2Schema (Zod runtime)",
-      "runtimeOnly": [
-        "template placeholder grammar",
-        "element ids unique across zones",
-        "reservedBox xMm + widthMm <= 210 and yMm + heightMm <= 297",
-        "anchored element rectangle remains within 210 x 297 mm A4",
-        "v1 compatibility payloads are internal migration output and are rejected by native authoring"
-      ]
-    },
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "barcode": {
+        "additionalProperties": false,
+        "properties": {
+          "enabled": {
+            "default": false,
+            "type": "boolean"
+          },
+          "marginRightYMm": {
+            "default": 100,
+            "maximum": 270,
+            "minimum": 92,
+            "type": "number"
+          },
+          "payloadTemplate": {
+            "maxLength": 512,
+            "minLength": 1,
+            "type": "string"
+          },
+          "placement": {
+            "default": "infoblock",
+            "enum": [
+              "infoblock",
+              "footer-right",
+              "margin-right"
+            ],
+            "type": "string"
+          },
+          "sizeMm": {
+            "default": 22,
+            "maximum": 40,
+            "minimum": 12,
+            "type": "number"
+          },
+          "type": {
+            "default": "qr",
+            "enum": [
+              "qr",
+              "code128"
+            ],
+            "type": "string"
+          },
+          "widthMm": {
+            "default": 50,
+            "maximum": 90,
+            "minimum": 20,
+            "type": "number"
+          }
+        },
+        "type": "object"
+      },
+      "chrome": {
+        "additionalProperties": false,
+        "properties": {
+          "dateLine": {
+            "type": "boolean"
+          },
+          "recipientBlock": {
+            "type": "boolean"
+          },
+          "subjectLine": {
+            "type": "boolean"
+          }
+        },
+        "type": "object"
+      },
+      "continuation": {
+        "additionalProperties": false,
+        "properties": {
+          "enabled": {
+            "default": false,
+            "type": "boolean"
+          },
+          "headerLine": {
+            "default": true,
+            "type": "boolean"
+          }
+        },
+        "type": "object"
+      },
+      "documentMode": {
+        "enum": [
+          "letter",
+          "form"
+        ],
+        "type": "string"
+      },
+      "falzmarken": {
+        "additionalProperties": false,
+        "properties": {
+          "enabled": {
+            "default": false,
+            "type": "boolean"
+          },
+          "falz": {
+            "default": true,
+            "type": "boolean"
+          },
+          "lochmarke": {
+            "default": true,
+            "type": "boolean"
+          }
+        },
+        "type": "object"
+      },
+      "footer": {
+        "additionalProperties": false,
+        "properties": {
+          "columns": {
+            "items": {
+              "items": {
+                "maxLength": 120,
+                "type": "string"
+              },
+              "maxItems": 8,
+              "minItems": 1,
+              "type": "array"
+            },
+            "maxItems": 4,
+            "minItems": 1,
+            "type": "array"
+          },
+          "enabled": {
+            "default": false,
+            "type": "boolean"
+          },
+          "fontSizePt": {
+            "default": 7,
+            "maximum": 9,
+            "minimum": 6,
+            "type": "number"
+          },
+          "scope": {
+            "default": "first-page",
+            "enum": [
+              "first-page",
+              "all-letter-pages"
+            ],
+            "type": "string"
+          },
+          "topMm": {
+            "default": 272,
+            "maximum": 285,
+            "minimum": 250,
+            "type": "number"
+          }
+        },
+        "required": [
+          "columns"
+        ],
+        "type": "object"
+      },
+      "header": {
+        "additionalProperties": false,
+        "properties": {
+          "heightMm": {
+            "maximum": 120,
+            "minimum": 5,
+            "type": "number"
+          },
+          "letterheadId": {
+            "anyOf": [
+              {
+                "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)$",
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "offsetXMm": {
+            "default": 0,
+            "maximum": 170,
+            "minimum": 0,
+            "type": "number"
+          },
+          "offsetYMm": {
+            "default": 8,
+            "maximum": 40,
+            "minimum": 0,
+            "type": "number"
+          },
+          "placement": {
+            "default": "top",
+            "enum": [
+              "top",
+              "logo-right",
+              "full"
+            ],
+            "type": "string"
+          },
+          "replaceSenderBlock": {
+            "default": false,
+            "type": "boolean"
+          },
+          "widthMm": {
+            "default": 165,
+            "maximum": 210,
+            "minimum": 10,
+            "type": "number"
+          }
+        },
+        "type": "object"
+      },
+      "infoblock": {
+        "additionalProperties": false,
+        "properties": {
+          "enabled": {
+            "default": false,
+            "type": "boolean"
+          },
+          "fontSizePt": {
+            "default": 8,
+            "maximum": 10,
+            "minimum": 7,
+            "type": "number"
+          },
+          "labelWidthMm": {
+            "default": 28,
+            "maximum": 40,
+            "minimum": 15,
+            "type": "number"
+          },
+          "rows": {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "key": {
+                  "pattern": "^[a-z][a-z0-9_]{0,30}$",
+                  "type": "string"
+                },
+                "label": {
+                  "maxLength": 120,
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "staticValue": {
+                  "anyOf": [
+                    {
+                      "maxLength": 200,
+                      "type": "string"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "key",
+                "label"
+              ],
+              "type": "object"
+            },
+            "maxItems": 12,
+            "minItems": 1,
+            "type": "array"
+          },
+          "topMm": {
+            "default": 45,
+            "maximum": 90,
+            "minimum": 32,
+            "type": "number"
+          },
+          "valueWidthMm": {
+            "default": 37,
+            "maximum": 55,
+            "minimum": 20,
+            "type": "number"
+          },
+          "xMm": {
+            "default": 125,
+            "maximum": 170,
+            "minimum": 118,
+            "type": "number"
+          }
+        },
+        "required": [
+          "rows"
+        ],
+        "type": "object"
+      },
+      "marginText": {
+        "additionalProperties": false,
+        "properties": {
+          "fontSizePt": {
+            "default": 6,
+            "maximum": 9,
+            "minimum": 5,
+            "type": "number"
+          },
+          "rotationDeg": {
+            "anyOf": [
+              {
+                "const": 90,
+                "type": "number"
+              },
+              {
+                "const": 270,
+                "type": "number"
+              }
+            ],
+            "default": 90
+          },
+          "side": {
+            "default": "left",
+            "enum": [
+              "left",
+              "right"
+            ],
+            "type": "string"
+          },
+          "text": {
+            "maxLength": 160,
+            "minLength": 1,
+            "type": "string"
+          }
+        },
+        "required": [
+          "text"
+        ],
+        "type": "object"
+      },
+      "schemaVersion": {
+        "const": 1,
+        "type": "number"
+      }
+    },
+    "required": [
+      "schemaVersion"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Native v2 authoring schema. Standard JSON Schema covers shape, defaults, native enums, asset and box dependencies. Runtime Zod validation remains authoritative for template grammar, duplicate element ids, and arithmetic A4 placement.",
+    "properties": {
+      "body": {
+        "additionalProperties": false,
+        "properties": {
+          "font": {
+            "anyOf": [
+              {
+                "enum": [
+                  "serif",
+                  "humanist-sans",
+                  "grotesk",
+                  "mono"
+                ],
+                "type": "string"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "token": {
+                    "const": "brand.font",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "token"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "lineHeightPt": {
+            "maximum": 30,
+            "minimum": 7,
+            "type": "number"
+          },
+          "senderBlockStyle": {
+            "default": "inherit",
+            "enum": [
+              "inherit",
+              "compact",
+              "hidden"
+            ],
+            "type": "string"
+          },
+          "sizePt": {
+            "maximum": 18,
+            "minimum": 6,
+            "type": "number"
+          }
+        },
+        "required": [
+          "font",
+          "sizePt",
+          "lineHeightPt"
+        ],
+        "type": "object"
+      },
+      "furniture": {
+        "additionalProperties": false,
+        "properties": {
+          "barcode": {
+            "additionalProperties": false,
+            "properties": {
+              "enabled": {
+                "default": false,
+                "type": "boolean"
+              },
+              "marginRightYMm": {
+                "default": 100,
+                "maximum": 270,
+                "minimum": 92,
+                "type": "number"
+              },
+              "payloadTemplate": {
+                "maxLength": 512,
+                "minLength": 1,
+                "type": "string"
+              },
+              "placement": {
+                "default": "infoblock",
+                "enum": [
+                  "infoblock",
+                  "footer-right",
+                  "margin-right"
+                ],
+                "type": "string"
+              },
+              "sizeMm": {
+                "default": 22,
+                "maximum": 40,
+                "minimum": 12,
+                "type": "number"
+              },
+              "type": {
+                "default": "qr",
+                "enum": [
+                  "qr",
+                  "code128"
+                ],
+                "type": "string"
+              },
+              "widthMm": {
+                "default": 50,
+                "maximum": 90,
+                "minimum": 20,
+                "type": "number"
+              }
+            },
+            "type": "object"
+          },
+          "chrome": {
+            "additionalProperties": false,
+            "properties": {
+              "dateLine": {
+                "type": "boolean"
+              },
+              "recipientBlock": {
+                "type": "boolean"
+              },
+              "subjectLine": {
+                "type": "boolean"
+              }
+            },
+            "type": "object"
+          },
+          "continuation": {
+            "additionalProperties": false,
+            "properties": {
+              "enabled": {
+                "default": false,
+                "type": "boolean"
+              },
+              "headerLine": {
+                "default": true,
+                "type": "boolean"
+              }
+            },
+            "type": "object"
+          },
+          "documentMode": {
+            "enum": [
+              "letter",
+              "form"
+            ],
+            "type": "string"
+          },
+          "falzmarken": {
+            "additionalProperties": false,
+            "properties": {
+              "enabled": {
+                "default": false,
+                "type": "boolean"
+              },
+              "falz": {
+                "default": true,
+                "type": "boolean"
+              },
+              "lochmarke": {
+                "default": true,
+                "type": "boolean"
+              }
+            },
+            "type": "object"
+          },
+          "infoblock": {
+            "additionalProperties": false,
+            "properties": {
+              "enabled": {
+                "default": false,
+                "type": "boolean"
+              },
+              "fontSizePt": {
+                "default": 8,
+                "maximum": 10,
+                "minimum": 7,
+                "type": "number"
+              },
+              "labelWidthMm": {
+                "default": 28,
+                "maximum": 40,
+                "minimum": 15,
+                "type": "number"
+              },
+              "rows": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "key": {
+                      "pattern": "^[a-z][a-z0-9_]{0,30}$",
+                      "type": "string"
+                    },
+                    "label": {
+                      "maxLength": 120,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "staticValue": {
+                      "anyOf": [
+                        {
+                          "maxLength": 200,
+                          "type": "string"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ]
+                    }
+                  },
+                  "required": [
+                    "key",
+                    "label"
+                  ],
+                  "type": "object"
+                },
+                "maxItems": 12,
+                "minItems": 1,
+                "type": "array"
+              },
+              "topMm": {
+                "default": 45,
+                "maximum": 90,
+                "minimum": 32,
+                "type": "number"
+              },
+              "valueWidthMm": {
+                "default": 37,
+                "maximum": 55,
+                "minimum": 20,
+                "type": "number"
+              },
+              "xMm": {
+                "default": 125,
+                "maximum": 170,
+                "minimum": 118,
+                "type": "number"
+              }
+            },
+            "required": [
+              "rows"
+            ],
+            "type": "object"
+          }
+        },
+        "type": "object"
+      },
+      "schemaVersion": {
+        "const": 2,
+        "type": "number"
+      },
+      "zones": {
+        "additionalProperties": false,
+        "properties": {
+          "continuationHeader": {
+            "$ref": "#/$defs/letterDesignV2Zone"
+          },
+          "footer": {
+            "$ref": "#/$defs/letterDesignV2Zone"
+          },
+          "header": {
+            "$ref": "#/$defs/letterDesignV2Zone"
+          },
+          "sidebar": {
+            "$ref": "#/$defs/letterDesignV2Zone"
+          },
+          "watermark": {
+            "$ref": "#/$defs/letterDesignV2Zone"
+          }
+        },
+        "type": "object"
+      }
+    },
+    "required": [
+      "schemaVersion",
+      "zones",
+      "body"
+    ],
+    "semanticValidation": {
+      "authority": "designV2Schema (Zod runtime)",
+      "runtimeOnly": [
+        "template placeholder grammar",
+        "element ids unique across zones",
+        "reservedBox xMm + widthMm <= 210 and yMm + heightMm <= 297",
+        "anchored element rectangle remains within 210 x 297 mm A4",
+        "v1 compatibility payloads are internal migration output and are rejected by native authoring"
+      ]
+    },
+    "type": "object"
+  }
+]

changedInput schema / properties / pages / description

Previous value: -"Standard ist nur Seite 1. Seite 2 wird ausschließlich bei continuationHeader geliefert. EN: The default is page 1 only. Page 2 is returned only for continuationHeader."New value: +"Standard 1, Seite 2 nur mit continuationHeader, 0 nur Links. EN: Default 1, page 2 only with continuationHeader, 0 links only."

changedInput schema / properties / pages / minimum
```
Previous value: -1New value: +0
```

changedInput schema / properties / sampleVariant / description

Previous value: -"typical zeigt eine vollständige Beispielseite, an der du Lesbarkeit und Rhythmus beurteilst. empty zeigt das Briefpapier allein: Kopf und Fuß stehen echt, die Textfläche bleibt frei. Ein eigener sampleContent hat Vorrang vor beidem. EN: typical shows a full example page for judging readability and rhythm. empty shows the stationery on its own: header and footer are typeset for real and the text area stays open. Your own sampleContent takes precedence over both."New value: +"typical zeigt eine volle Beispielseite, empty das Briefpapier allein mit freier Textfläche. sampleContent geht vor. EN: typical shows a full example page, empty the stationery alone with an open text area. sampleContent takes precedence."

Changed2 schema fields changedOct 16, 2026

changedInput schema / properties / pages / description

Previous value: -"Standard ist nur Seite 1. Seite 2 wird ausschliesslich bei continuationHeader geliefert. EN: The default is page 1 only. Page 2 is returned only for continuationHeader."New value: +"Standard ist nur Seite 1. Seite 2 wird ausschließlich bei continuationHeader geliefert. EN: The default is page 1 only. Page 2 is returned only for continuationHeader."

changedInput schema / properties / sampleVariant / description

Previous value: -"typical zeigt eine vollstaendige Beispielseite, an der du Lesbarkeit und Rhythmus beurteilst. empty zeigt das Briefpapier allein: Kopf und Fuss stehen echt, die Textflaeche bleibt frei. Ein eigener sampleContent hat Vorrang vor beidem. EN: typical shows a full example page for judging readability and rhythm. empty shows the stationery on its own: header and footer are typeset for real and the text area stays open. Your own sampleContent takes precedence over both."New value: +"typical zeigt eine vollständige Beispielseite, an der du Lesbarkeit und Rhythmus beurteilst. empty zeigt das Briefpapier allein: Kopf und Fuß stehen echt, die Textfläche bleibt frei. Ein eigener sampleContent hat Vorrang vor beidem. EN: typical shows a full example page for judging readability and rhythm. empty shows the stationery on its own: header and footer are typeset for real and the text area stays open. Your own sampleContent takes precedence over both."

First observedAug 8, 2026

TDQS

A3.5/5.0

Behavior4/5

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

Goes beyond the readOnly/non-destructive annotations by describing how the preview is composed: real sender data, fictional recipient, sample text, and that the letter stays a draft and is free of charge. It also discloses the return shape (one inline PNG page; page 2 only for continuationHeader; links only with pages 0). Missing only auth/permission or rate-limit context.

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

Conciseness3/5

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

The purpose is front-loaded in the first clause, which is good. However, the entire text is duplicated verbatim in German and English, roughly doubling length without adding information for an agent.

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?

Return format is covered despite no output schema, which is valuable. But for a tool with 9 parameters, deep nested design objects and 22% schema coverage, several parameters and the precedence between designId and inline design are left undocumented.

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

Parameters3/5

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

Schema description coverage is only 22% across 9 parameters, so the description carries real weight. It successfully explains the design input duality (saved designId vs inline design, schemaVersion 1 or 2) and the pages/sampleVariant semantics, but leaves resolution, sampleContent/sampleSubject, reference and reasoning unexplained.

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?

States a specific verb and resource: renders a saved or inline letter design (schemaVersion 1 or 2) into an output image. It clarifies the composer equivalence to a real send, so the agent understands what is being rendered. It does not explicitly differentiate from the sibling letter_preview, which also previews letters, so the separation is only inferable.

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

Usage Guidelines3/5

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

Usage is implied by "so siehst du vorab ... auf diesem Briefpapier" – used to check a design before sending. But no explicit when-not condition and no named alternative (letter_preview, letter_design_list) is offered, so an agent must infer which preview tool applies.

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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Briefdesign ansehen

Input Schema

Schema Changelog

TDQS

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Resources