applescript-mcp

Instructions

Implementation Reference

• src/categories/clipboard.ts:86-97 (handler)

  The handler logic for the clear_clipboard tool. This script template is executed as AppleScript to clear the clipboard contents.
  { name: "clear_clipboard", description: "Clear clipboard content", script: ` try set the clipboard to "" return "Clipboard cleared successfully" on error errMsg return "Failed to clear clipboard: " & errMsg end try `, },
• src/framework.ts:220-232 (registration)

  Registers the 'clipboard_clear_clipboard' tool in the MCP listTools response by constructing the name from category 'clipboard' and script 'clear_clipboard'.
  // List available tools this.server.setRequestHandler(ListToolsRequestSchema, async () => ({ tools: this.categories.flatMap((category) => category.scripts.map((script) => ({ name: `${category.name}_${script.name}`, // Changed from dot to underscore description: `[${category.description}] ${script.description}`, inputSchema: script.schema || { type: "object", properties: {}, }, })), ), }));
• src/index.ts:24-36 (registration)

  Registers the clipboardCategory (containing the clear_clipboard script) with the AppleScriptFramework server.
  console.error("[INFO] Registering categories..."); server.addCategory(systemCategory); server.addCategory(calendarCategory); server.addCategory(finderCategory); server.addCategory(clipboardCategory); server.addCategory(notificationsCategory); server.addCategory(itermCategory); server.addCategory(mailCategory); server.addCategory(pagesCategory); server.addCategory(shortcutsCategory); server.addCategory(messagesCategory); server.addCategory(notesCategory); console.error(`[INFO] Registered ${11} categories successfully`);
• src/framework.ts:234-295 (handler)

  The MCP tool call handler that parses 'clipboard_clear_clipboard', retrieves the clear_clipboard script from clipboard category, generates/executes the AppleScript, and returns the result.
  // Handle tool execution this.server.setRequestHandler(CallToolRequestSchema, async (request) => { const toolName = request.params.name; this.log("info", "Tool execution requested", { tool: toolName, hasArguments: !!request.params.arguments }); try { // Split on underscore instead of dot const [categoryName, ...scriptNameParts] = toolName.split("_"); const scriptName = scriptNameParts.join("_"); // Rejoin in case script name has underscores const category = this.categories.find((c) => c.name === categoryName); if (!category) { this.log("warning", "Category not found", { categoryName }); throw new McpError( ErrorCode.MethodNotFound, `Category not found: ${categoryName}`, ); } const script = category.scripts.find((s) => s.name === scriptName); if (!script) { this.log("warning", "Script not found", { categoryName, scriptName }); throw new McpError( ErrorCode.MethodNotFound, `Script not found: ${scriptName}`, ); } this.log("debug", "Generating script content", { categoryName, scriptName, isFunction: typeof script.script === "function" }); const scriptContent = typeof script.script === "function" ? script.script(request.params.arguments) : script.script; const result = await this.executeScript(scriptContent); this.log("info", "Tool execution completed successfully", { tool: toolName, resultLength: result.length }); return { content: [ { type: "text", text: result, }, ], }; } catch (error) {
• src/framework.ts:176-214 (helper)

  Helper function that executes the AppleScript generated by the clear_clipboard handler using osascript.
  private async executeScript(script: string): Promise<string> { // Log script execution (truncate long scripts for readability) const scriptPreview = script.length > 100 ? script.substring(0, 100) + "..." : script; this.log("debug", "Executing AppleScript", { scriptPreview }); try { const startTime = Date.now(); const { stdout } = await execAsync( `osascript -e '${script.replace(/'/g, "'\"'\"'")}'`, ); const executionTime = Date.now() - startTime; this.log("debug", "AppleScript executed successfully", { executionTimeMs: executionTime, outputLength: stdout.length }); return stdout.trim(); } catch (error) { // Properly type check the error object let errorMessage = "Unknown error occurred"; if (error && typeof error === "object") { if ("message" in error && typeof error.message === "string") { errorMessage = error.message; } else if (error instanceof Error) { errorMessage = error.message; } } else if (typeof error === "string") { errorMessage = error; } this.log("error", "AppleScript execution failed", { error: errorMessage, scriptPreview }); throw new Error(`AppleScript execution failed: ${errorMessage}`); } }