How to Run 3 to 8 Coding Agents in Parallel Without Losing Track

Running two agents at once takes you five minutes. You open two terminals, hand each one a task, and watch the text scroll.

The trouble starts at the fourth.

You no longer know which one is waiting for a review, which one finished, which one crashed ten minutes ago while you were looking elsewhere. You scroll in the wrong terminal. You re-launch a task that was already done. An hour in, you're doing the work of three agents by hand just to keep your bearings.

It's not a horsepower problem. It's a visibility problem.

The real bottleneck is your head

An agent coding autonomously delivers in bursts. It thinks for 40 seconds, writes, stops, waits for your sign-off. During those 40 seconds you can follow a second agent. While the second one writes, you approve the first.

Up to 3 agents, your brain keeps up. Past 5, you drop the thread.

Anthropic published a telling number in its docs: unguided attempts succeed about one time in three. The gap between people who ship volume and everyone else isn't the model. It's the structure they put in place before launching.

So before you scale, you structure.

Rule one: one agent, one isolated workspace

The classic mistake is putting three agents on the same copy of the repo. They step on each other. One edits package.json, so does another, and you end up with a merge you can't untangle.

The fix is two words: git worktree.

git worktree add ../project-auth feature/auth
git worktree add ../project-billing feature/billing
git worktree add ../project-export feature/export

Each agent works in its own folder, on its own branch, with its own files. Zero collisions. You review each branch separately and merge when it's ready.

This is the foundation of what researchers call isolated delegation: a central manager splits the work, each subtask runs in its own corner, and integration happens afterward, with tests to validate.

Rule two: never hand out the same central file twice

Before you split the work, find the files several features will need to touch. The router. The database schema. The API route config.

Those files get exactly one agent. The others wait or work around them.

Hand the same routes.ts to two parallel agents and you'll pay in merge conflicts what you thought you'd gain in parallelism. That trade loses every time.

Rule three: one board, not ten terminals

This is where most people quit multi-agent. They open eight terminal tabs, lose the thread, and crawl back to a single agent.

You need one view that answers three questions at a glance:

• Who's coding right now?
• Who's waiting on my review?
• Who finished or crashed?

Without that view, multi-agent costs you more in mental load than it gives you in speed. With it, you can genuinely hold 6 or 8 workstreams at once.

That's the exact gap AgentsRoom fills. Every agent gets its own tile, its status, its color. An agent waiting on your reply turns red and pings you. You stop scrolling the wrong terminal, you look at the board and you know where to go.

The cadence that works in practice

Here's the rhythm I'd start with.

Begin with two agents, on two features that share no files. Get used to the review-then-merge loop. That loop, not the code, becomes your real job.

Once that loop feels smooth, go to four. Keep a strict priority list of high-impact tasks, and lean hard on plan mode: you approve the agent's plan before it writes a line. A plan approved up front saves you a painful review later.

The sweet spot sits between 3 and 8 features on the same repo, with visual oversight. Beyond that, even with a good board, review becomes the bottleneck and you lose the benefit.

What you actually gain

Multi-agent is pointless for 95% of small tasks. To fix a typo or add a button, a single agent is plenty, and it's faster.

Where it changes your week is on big work. You kick off three independent refactors one evening, review them as they land, and the next morning you've got three days of work ready to merge.

The secret isn't the number of agents. It's always knowing which one needs you, right now. Fix that, and the rest follows.