Markdownify MCP Server

Instructions

Implementation Reference

• src/tools.ts:126-139 (schema)

  Tool schema definition including name, description, and input schema for 'pptx-to-markdown'.

  export const PptxToMarkdownTool = ToolSchema.parse({
    name: "pptx-to-markdown",
    description: "Convert a PPTX file to markdown",
    inputSchema: {
      type: "object",
      properties: {
        filepath: {
          type: "string",
          description: "Absolute path of the PPTX file to convert",
        },
      },
      required: ["filepath"],
    },
  });

• src/server.ts:33-37 (registration)

  Registers the pptx-to-markdown tool (among others exported from tools.ts) for listing via MCP protocol.

  server.setRequestHandler(ListToolsRequestSchema, async () => {
    return {
      tools: Object.values(tools),
    };
  });

• src/server.ts:72-86 (handler)

  Handler dispatch for pptx-to-markdown tool call: validates input filepath and invokes Markdownify.toMarkdown for conversion.

  case tools.PDFToMarkdownTool.name:
  case tools.ImageToMarkdownTool.name:
  case tools.AudioToMarkdownTool.name:
  case tools.DocxToMarkdownTool.name:
  case tools.XlsxToMarkdownTool.name:
  case tools.PptxToMarkdownTool.name:
    if (!validatedArgs.filepath) {
      throw new Error("File path is required for this tool");
    }
    result = await Markdownify.toMarkdown({
      filePath: validatedArgs.filepath,
      projectRoot: validatedArgs.projectRoot,
      uvPath: validatedArgs.uvPath || process.env.UV_PATH,
    });
    break;

• src/Markdownify.ts:74-124 (helper)

  Core helper function that performs the file-to-markdown conversion using external 'markitdown' tool via uv, handles temp files and errors.

  static async toMarkdown({
    filePath,
    url,
    projectRoot = path.resolve(__dirname, ".."),
    uvPath = "~/.local/bin/uv",
  }: {
    filePath?: string;
    url?: string;
    projectRoot?: string;
    uvPath?: string;
  }): Promise<MarkdownResult> {
    try {
      let inputPath: string;
      let isTemporary = false;
  
      if (url) {
        const response = await fetch(url);
  
        let extension = null;
  
        if (url.endsWith(".pdf")) {
          extension = "pdf";
        }
  
        const arrayBuffer = await response.arrayBuffer();
        const content = Buffer.from(arrayBuffer);
  
        inputPath = await this.saveToTempFile(content, extension);
        isTemporary = true;
      } else if (filePath) {
        inputPath = filePath;
      } else {
        throw new Error("Either filePath or url must be provided");
      }
  
      const text = await this._markitdown(inputPath, projectRoot, uvPath);
      const outputPath = await this.saveToTempFile(text);
  
      if (isTemporary) {
        fs.unlinkSync(inputPath);
      }
  
      return { path: outputPath, text };
    } catch (e: unknown) {
      if (e instanceof Error) {
        throw new Error(`Error processing to Markdown: ${e.message}`);
      } else {
        throw new Error("Error processing to Markdown: Unknown error occurred");
      }
    }
  }