Agent Capabilities & Autonomy
Cascade, Windsurf's flagship agent, is the more aggressive of the two out of the box. According to Steve from Builder.io and PlivoAI, Cascade automatically scans the repository and executes multi-step tasks without manual file selection. Tell it what you want and it starts moving across the codebase on its own.
But don't mistake autonomy for self-awareness. Steve and RJ the Computer Doctor both warned that neither IDE provides a true self-verifying agentic debugging loop. The AI will happily claim it fixed the bug when it didn't. You have to test manually, or install a third-party extension like Cline, which works with both IDEs and iteratively verifies its own fixes.
Where Cursor strikes back is scale. Agent mode can orchestrate up to eight parallel agents. Windsurf has no true parallel execution. For a single focused task, Windsurf feels like magic. For a large refactor (one agent fixing the API layer while another updates tests and a third migrates configs), Cursor's parallelism is a different beast.