A2D Playground Desktop App

The A2D Playground is also available as a desktop app for macOS and Windows. It is the same Playground as the hosted web app, plus a Local Workspace: requests and collections saved as plain JSON files in a folder you choose.

Download

You can also get the downloads from the icons in the top bar of a2playground.a2d-ai.com.

Platform	Download
macOS, Apple silicon (M1 and later)	A2 Playground-0.1.0-arm64.dmg
macOS, Intel	A2 Playground-0.1.0.dmg
Windows (x64)	A2 Playground Setup 0.1.0.exe

Installing

macOS

Open the .dmg and drag A2 Playground into Applications
The first time you open it, macOS warns that the app is from an unidentified developer. Right-click A2 Playground in Applications, choose Open, then click Open in the dialog. You only need to do this once

You can also remove the quarantine flag from a terminal:

xattr -dr com.apple.quarantine "/Applications/A2 Playground.app"

Windows

Run A2 Playground Setup 0.1.0.exe
If Windows shows Windows protected your PC, click More info, then Run anyway

The current desktop release is not code-signed, so macOS and Windows warn on first launch. The app has no automatic updates yet. To update, download and install the newer version.

Signing In

The desktop app has its own sign-in dialog. Enter the email and password of your A²D account. Sign up and Forgot password open www.a2d-ai.com in your browser.

Signed in, you get the same A²D Assets and My Library trees as on the web. See A2D Playground.

Local Workspace

In the Local Workspace section of the sidebar, choose a folder on your computer. The Playground saves your folders, requests and collections there as JSON files and loads them from there:

<workspace-folder>/
  myFolder/
    petstore.collection.json
    petstore/
      list-pets.rest.json
      create-pet.rest.json

Because the workspace is just files, you can keep it in version control and share it with your team. The Playground notices outside changes (for example after a git pull) and refreshes the sidebar. The A2D IDE extensions use the same file format. See Collections & A²D Assets.

Limitations

MCP over stdio (starting a local MCP server process) is not supported yet. Use Streamable HTTP or SSE endpoints
There is no organization switcher. The Playground uses your current organization

Next Steps

A2D Playground — guest and signed-in modes
Collections & A²D Assets — organize REST requests in collections
A2D IDE Extensions — the same Playground inside your IDE

Install the Playground once and test your endpoints from your desktop.

Playground Overview Using the Tester