{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "tiwater.office-mcp-input/docx_set_section_margins",
  "type": "object",
  "properties": {
    "input": { "type": "string", "minLength": 1, "x-tiwater-file-role": "read", "x-tiwater-document-revision-role": "current" },
    "changes": { "type": "array", "minItems": 1, "items": { "type": "object", "properties": {
      "sectionIndex": { "type": "integer", "minimum": 0, "maximum": 9007199254740991 },
      "unit": { "type": "string", "const": "twip", "description": "Unit for every supplied margin value." },
      "margins": { "type": "object", "description": "At least one margin must be supplied; omitted margins remain unchanged.", "properties": {
        "top": { "type": "integer", "minimum": 0, "maximum": 31680 },
        "bottom": { "type": "integer", "minimum": 0, "maximum": 31680 },
        "left": { "type": "integer", "minimum": 0, "maximum": 31680 },
        "right": { "type": "integer", "minimum": 0, "maximum": 31680 },
        "header": { "type": "integer", "minimum": 0, "maximum": 31680 },
        "footer": { "type": "integer", "minimum": 0, "maximum": 31680 }
      }, "additionalProperties": false }
    }, "required": ["sectionIndex", "unit", "margins"], "additionalProperties": false } },
    "output": { "type": "string", "minLength": 1, "description": "Output DOCX path; may equal input for an atomic in-place update.", "x-tiwater-file-role": "write" },
    "receiptOutput": { "type": "string", "minLength": 1, "x-tiwater-file-role": "write", "x-tiwater-file-effect": false }
  },
  "required": ["input", "changes", "output", "receiptOutput"],
  "additionalProperties": false
}