Download AgentPlayground

What you get

• —AgentPlayground localhost:3200 — permanent. Where your playgrounds live. It is never reset.
• —AgentPlayground Sandbox localhost:3100 — throwaway. Where you try something before it goes anywhere real. Wipe it as often as you like.

They are separate on purpose: a sandbox you are willing to destroy every ten minutes cannot also be where your real work lives. Each opens in its own window — not a browser tab — and keeps its own database.

Requirements

• —Docker Desktop 4.x+ — the app runs in containers
• —Node.js 20+ — the launcher that starts Docker and opens the window
• —Windows 10 or later. The installer and the Desktop icons are Windows-only for now.
• —4 GB RAM, and about 3 GB of disk for the first download

Install

There are no config files to edit and no keys to paste in. It generates its own secrets, installs to your user folder, and you can delete the extracted ZIP afterwards.

What runs locally, and what needs a server

The desktop is where you build and run. A server is where you publish and sell. The split is exactly one line: anything that needs a public address needs a server.

• —Local, in full — building playgrounds, teams, agents and skills; meetings; the Brain; projects; local models; and importing and exporting bundles, at full parity with a server.
• —Needs a server — logging in from anywhere, publishing an app to a real URL, subdomains, and inbound webhooks.
• —Recurring tasks run only while your machine is on. A laptop lid closes; a server does not. This is the difference people notice first.

Models and API keys

The app asks for a key in Settings when you first need one — nothing goes in a file. You can also skip keys entirely and run local models instead.