What does Cursor actually do?
Traditional AI coding tools often break the workflow into awkward pieces. You write code in the editor, copy context into a browser tab, paste the answer back, then switch again when the task becomes a pull request review or a terminal step. Cursor is designed to collapse more of that loop into one environment. The homepage and product pages keep emphasizing agents, Tab, code review, rules, cloud agents, and MCP because the real promise is not just faster typing. It is that your coding session stops fragmenting across five surfaces every time the task changes shape. For developers working in real repos, that matters more than a flashy demo because most of the lost time comes from context switching, not from the literal act of typing code.
The product is most convincing when you look at how its pieces stack. Tab handles rapid continuation when you are already in flow. Agents take over more structured implementation work. Rules help force generated changes to respect repo-specific expectations. MCP expands the environment outward so the assistant can work with external tools and data sources. Bugbot adds another layer by reviewing pull requests instead of only helping during authoring. This combination gives Cursor a different profile from a plain code completion tool or a pure chat assistant. It is trying to sit in the middle of day-to-day software delivery, from drafting code to checking changes before merge, while still letting you stay inside a familiar editor-shaped workflow.