box by Simular

Name: box by Simular
Author: simular-ai

by simular-aiversion 1.0.1i★ –iRuns in the cloud

Registry nameai.simular/box

Install

Overview

Description from the maker (original English)

A cloud Linux desktop for your AI: browse, click, type, read the screen and run commands.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.box.simular.ai/mcp

Run this in your terminal

claude mcp add --transport http box https://mcp.box.simular.ai/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "box": {
      "url": "https://mcp.box.simular.ai/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "box": {
      "type": "http",
      "url": "https://mcp.box.simular.ai/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.box.simular.ai/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

The server asks you to sign in before it lists its tools.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain simular.ai (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 255 ms (HTTP 401)
✓ Pass
Sign-in with OAuth
Declares OAuth sign-in, so your AI app can take you to log in
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 32398 servers in this category
Published to the registry more recently than 93% of the other 32398 servers in this category
Basic checks equal to or better than 100% of the other 32398 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is box by Simular safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 2 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, AI Deprecations

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

Install

AI Deprecations

by aideprecations.com

AI model shutdown dates, replacements, change feed and webhook alerts for 8 providers.

Runs in the cloudUpdated today

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

box by Simular: plugins

box gives your AI agent a computer of its own: a cloud Linux desktop with Chrome and a shell that it drives over MCP, while your own computer stays free. You can watch it live and take over at https://box.simular.ai/box.

Most agents need no plugin: add the MCP server https://mcp.box.simular.ai/mcp and sign in once (see https://box.simular.ai/install). This repository holds a package for each agent that installs box its own way. Each folder stands alone and is released through that agent's channel.

Agent	Folder	Sign-in	Install
Claude Code and Cowork	`claude/`	OAuth, once in the browser	`/plugin marketplace add simular-ai/box-plugin`, then `/plugin install box@simular-box`
DeepSeek Harness (dsh)	`dsh/`	Personal key (`cb_...`), pasted on the plugin's page in Plugins	dsh/README.md
Any of Claude Code, Codex, Cursor, OpenCode, Gemini CLI, Hermes, OpenClaw, VS Code (and steps for Claude Desktop)	`cli/`	OAuth; personal key with `--auth key` for Hermes and OpenClaw	`npx @simular-ai/box connect` (check with `npx @simular-ai/box doctor`)
Hermes Agent	`hermes/`	Personal key (`cb_...`) in `MCP_BOX_API_KEY`; OAuth optional	hermes/README.md

Offload: move a coding task into your box and back

Going offline in the middle of a task? In Claude Code with the plugin, /box:offload hands the task to a fresh Claude Code (or Codex, Cursor) session in your box, which keeps working while you are away; /box:back brings its commits and its written hand-over home and merges them. Any other agent or a plain terminal uses npx @simular-ai/box offload and npx @simular-ai/box back. Setup and details: cli/README.md.

Adding an agent

Add a folder named after the agent with its own manifest, MCP config and, where the agent supports skills, a copy of claude/skills/box/SKILL.md. Point it at https://mcp.box.simular.ai/mcp. Use OAuth sign-in where the agent supports it; otherwise read a personal key from an environment variable or the agent's own credentials store, never from a file in the package. Add a row above.

Releasing

claude/: bump version in claude/.claude-plugin/plugin.json. Claude Code doesn't auto-update third-party marketplaces: users get it with /plugin marketplace update simular-box and /plugin update box@simular-box, or with npx @simular-ai/box connect.
dsh/: bump version in dsh/package.json, then push a tag dsh-vX.Y.Z. The release workflow attaches dsh-box.tgz.
hermes/: bump version in hermes/plugin.json. Users copy the folder by hand until box is in the Hermes plugin catalog.
cli/: bump version in cli/package.json, then push a tag cli-vX.Y.Z. The publish-cli.yml workflow tests it and publishes @simular-ai/box to npm through trusted publishing (OIDC), with provenance; the one-time npm setup is in cli/README.md. When the box endpoint moves, change DEFAULT_MCP_URL in cli/src/constants.js, add the old host to OLD_HOSTS there, change the URL in every plugin folder, and release each one.

box by Simular

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

AI Deprecations

README from the maker

box by Simular: plugins

Offload: move a coding task into your box and back

Adding an agent

Releasing