The problem
A cloud agent can only analyse your finances if you first hand your finances to the cloud. Most people, sensibly, will not do that.
Drop a bank or card statement here
CSV export from almost any bank. It is read in the browser and never sent anywhere — the counter in the header stays at zero.
No account, no upload, no server. to see the parser handle a different export shape, encoding and currency.
Once it is loaded, ask your agent
In a browser without WebMCP, open the Tool console instead — it runs the same tools through document.modelContext.executeTool().
What WebMCP changes
The page registers tools the agent can call. The data stays in the tab; only the questions and the answers cross the boundary.
What that feels like
You ask for the subscriptions you forgot about. It reads a thousand rows, filters your screen to the eight it found, and pins the total.