box by Simular

ai.simularPublished by simular.aiOfficial publisherv1.0.1Updated Nov 4, 2026

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

VerifiedStreamable HTTPWeb executable

Overview

box by Simular's hosted MCP server (mcp.box.simular.ai), published by simular.ai; OAuth sign-in required; Streamable HTTP.

No AI overview yet: these facts come from the registry entry and the server itself.

Publisher
simular.ai
Endpoint
mcp.box.simular.ai
Last checked

Installation

In SourceWeft

  1. Open box by Simular in the dashboard and add it to a workspace.
  2. Connect the required credentials. They are stored privately and never shown on public pages.
  3. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/ai.simular%2Fbox/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config. The client completes OAuth sign-in on first connect.

{
  "mcpServers": {
    "box-by-simular": {
      "type": "http",
      "url": "https://mcp.box.simular.ai/mcp"
    }
  }
}

README

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.

AgentFolderSign-inInstall
Claude Code and Coworkclaude/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 Pluginsdsh/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 OpenClawnpx @simular-ai/box connect (check with npx @simular-ai/box doctor)
Hermes Agenthermes/Personal key (cb_...) in MCP_BOX_API_KEY; OAuth optionalhermes/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.

Source: README.md at commit 0085bfa

Tools

0
This server asks you to sign in, so SourceWeft could not read its tools without an account and has not indexed them. What a connected account sees can depend on that account and its permissions.

Version history

2
  1. v1.0.1LatestNov 4, 2026
  2. v1.0.0Nov 3, 2026

Score

85% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts