Build a Secure TypeScript MCP Client with Cross App Access (XAA)

Enterprise apps rarely work alone. Imagine this scenario: HR wants to ensure that a new employee completes their new hire onboarding, and they want this verification in the company’s HR app so it’s tied to the employee’s personnel file. But the onboarding tasks come from a task-tracking tool with requirements defined by each department, from a different vendor and on a different domain than the HR app.