Simple Document Processing MCP Server

Instructions

Implementation Reference

• src/tools/docxTools.ts:15-32 (schema)

  Defines the tool schema for 'docx_to_html', including name, description, and input schema requiring inputPath and outputDir.

  export const DOCX_TO_HTML_TOOL: Tool = {
    name: "docx_to_html",
    description: "Convert DOCX to HTML while preserving formatting",
    inputSchema: {
      type: "object",
      properties: {
        inputPath: {
          type: "string",
          description: "Path to the input DOCX file",
        },
        outputDir: {
          type: "string",
          description: "Directory where HTML should be saved",
        },
      },
      required: ["inputPath", "outputDir"],
    },
  };

• src/tools/docxTools.ts:59-98 (handler)

  The core handler function that converts DOCX to HTML using mammoth, ensures output directory exists, generates unique filename, and returns success/error.

  export async function docxToHtml(inputPath: string, outputDir: string) {
    try {
      console.error(`Starting DOCX to HTML conversion...`);
      console.error(`Input file: ${inputPath}`);
      console.error(`Output directory: ${outputDir}`);
  
      // 確保輸出目錄存在
      try {
        await fs.access(outputDir);
        console.error(`Output directory exists: ${outputDir}`);
      } catch {
        console.error(`Creating output directory: ${outputDir}`);
        await fs.mkdir(outputDir, { recursive: true });
        console.error(`Created output directory: ${outputDir}`);
      }
  
      const uniqueId = generateUniqueId();
      const buffer = await fs.readFile(inputPath);
  
      const result = await mammoth.convertToHtml({ buffer });
      console.error(
        `Conversion completed with ${result.messages.length} messages`
      );
  
      const outputPath = path.join(outputDir, `converted_${uniqueId}.html`);
      await fs.writeFile(outputPath, result.value);
      console.error(`Written HTML to ${outputPath}`);
  
      return {
        success: true,
        data: `Successfully converted DOCX to HTML: ${outputPath}`,
      };
    } catch (error) {
      console.error(`Error in docxToHtml:`, error);
      return {
        success: false,
        error: error instanceof Error ? error.message : "Unknown error",
      };
    }
  }

• src/tools/_index.ts:1-9 (registration)

  Imports DOCX_TO_HTML_TOOL and includes it in the exported 'tools' array used for MCP tool listing.

  import { DOCUMENT_READER_TOOL } from "./documentReader.js";
  import { DOCX_TO_HTML_TOOL, DOCX_TO_PDF_TOOL } from "./docxTools.js";
  import { EXCEL_READ_TOOL } from "./excelTools.js";
  import { FORMAT_CONVERTER_TOOL } from "./formatConverterPlus.js";
  import { HTML_CLEAN_TOOL, HTML_EXTRACT_RESOURCES_TOOL, HTML_FORMAT_TOOL, HTML_TO_MARKDOWN_TOOL, HTML_TO_TEXT_TOOL } from "./htmlTools.js";
  import { PDF_MERGE_TOOL, PDF_SPLIT_TOOL } from "./pdfTools.js";
  import { TEXT_DIFF_TOOL, TEXT_ENCODING_CONVERT_TOOL, TEXT_FORMAT_TOOL, TEXT_SPLIT_TOOL } from "./txtTools.js";
  
  export const tools = [DOCUMENT_READER_TOOL, PDF_MERGE_TOOL, PDF_SPLIT_TOOL, DOCX_TO_PDF_TOOL, DOCX_TO_HTML_TOOL, HTML_CLEAN_TOOL, HTML_TO_TEXT_TOOL, HTML_TO_MARKDOWN_TOOL, HTML_EXTRACT_RESOURCES_TOOL, HTML_FORMAT_TOOL, TEXT_DIFF_TOOL, TEXT_SPLIT_TOOL, TEXT_FORMAT_TOOL, TEXT_ENCODING_CONVERT_TOOL, EXCEL_READ_TOOL, FORMAT_CONVERTER_TOOL];

• src/index.ts:132-148 (registration)

  MCP server request handler dispatches 'docx_to_html' tool calls to the docxToHtml function.

  if (name === "docx_to_html") {
    const { inputPath, outputDir } = args as {
      inputPath: string;
      outputDir: string;
    };
    const result = await docxToHtml(inputPath, outputDir);
    if (!result.success) {
      return {
        content: [{ type: "text", text: `Error: ${result.error}` }],
        isError: true,
      };
    }
    return {
      content: [{ type: "text", text: fileOperationResponse(result.data) }],
      isError: false,
    };
  }