Cursor 3 ships parallel AI agents. Here is the multi-agent workflow that actually works.

Cursor 3 ships parallel AI agents. Here is the multi-agent workflow that actually works. On April 2, 2026, Cursor shipped version 3.0 and called it “a unified workspace for building software with agents.” The headline feature is the Agents Window: a sidebar that shows every active agent session, local or cloud, across all your repos, all at once. I have spent the past three weeks running it on a real codebase and the experience is different enough from any previous AI coding tool that it warrants a proper walkthrough. Not a demo. The actual workflow, with the parts that break. TL;DR Feature What it does When you reach for it Agents Window Sidebar listing all active agent sessions Any time you run more than one agent Local agents Composer 2 model, run in your open workspace Fast iteration, short-horizon tasks Cloud agents Runs offline, persists when laptop closes Long tasks, overnight runs, heavy refactors Local to cloud handoff Move a session between targets mid-task When a quick task grows into a long one Cursor Marketplace Plugins, MCPs, subagents, skills Extending what any agent can reach 1. What the Agents Window actually is Before Cursor 3, you had one agent session per window. You could open more than one Cursor window, but there was no unified view across them. The Agents Window fixes that by collecting all active sessions into a single sidebar panel. Open it with Cmd+Shift+P and search “Agents Window”. What you get is a list of every agent…

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