box by Simular is answering right now. Last checked 3 min ago. Last commit 4 Nov 2026.
A cloud Linux desktop for your AI: browse, click, type, read the screen and run commands.
We read the source, 3 d ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
const candidate = path.join(dir, bin + ext)
spawn(command[0], command[1], { stdio: 'ignore', detached: true, shell: false, windowsVerbatimArguments: false }).on('error', () => {}).unref()
if (entry === 'aws') return [read(path.join(home, '.aws/credentials'), 'secrets/aws')]
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.
claude mcp add box --transport http https://relay.simular.cloud/mcp
https://relay.simular.cloud/mcp
[mcp_servers.box]
url = "https://relay.simular.cloud/mcp"
{
"mcpServers": {
"box": {
"url": "https://relay.simular.cloud/mcp"
}
}
}
{
"servers": {
"box": {
"type": "http",
"url": "https://relay.simular.cloud/mcp"
}
}
}
This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.
This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://relay.simular.cloud/mcp | streamable-http | sign-in | 244 ms | 3 min ago |
| https://mcp.box.simular.ai/mcp | streamable-http | sign-in | 150 ms | 3 min ago |
Cloud desktops for AI agents: create a Linux computer, see its screen, click, type and run tasks.
Featherweight Linux desktops for AI agents: read the screen as text, click, type, run any app.
The cloud Mac alone, with Xcode, for AI agents: run commands, build and test, use the screen.
Use your real Android phone from any MCP client: read the screen, tap, type, run tasks and adb.
Cloud Android phones for AI agents: create a phone, read the screen, tap, type, install APKs, park.
Connect AI assistants to your approved computer for files, commands, browser and desktop tasks.
MCP server for desktop, browser (CDP), and Android automation. Screenshot, OCR, click, type.
Control a real browser from AI agents: navigate, click, type, screenshot, read the page.
Answers built from our own checks of this server.