Calculator

This connects Claude to a suite of web calculators with session-based collaboration. You get six tools: list available calculators by category, fetch input schemas, run calculations that return both results and prefilled URLs, evaluate CAS expressions server-side, create shareable sessions, and push actions into live sessions to update fields or trigger plots. The session model is the interesting bit. You can spin up a calculator instance, get a URL, then programmatically push field updates or computations into it while a user watches in their browser. Useful when you need Claude to walk someone through a financial model or math problem and want the work visible in a real calculator UI they can bookmark or share.