Sandboxrun

Name: Sandboxrun
Author: CloudCorpRecords

by CloudCorpRecordsversion 0.1.0i★ –iRuns on your computer

Registry nameio.github.CloudCorpRecords/sandboxrun

Install

Overview

Description from the maker (original English)

Run code in a secure E2B sandbox from the CLI or a stdio MCP server.

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 checksi1 of 1 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 on your computer
Transport: stdio
Category: Other

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "sandboxrun": {
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/sandboxrun",
        "mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add sandboxrun -- npx -y @reneturcios/sandboxrun mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "sandboxrun": {
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/sandboxrun",
        "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": {
    "sandboxrun": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@reneturcios/sandboxrun",
        "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.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

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

Runs on your computer; the tool list appears in your AI app after you install it.

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 with the GitHub account CloudCorpRecords, which owns the repo
… 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
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32415 servers in this category
Published to the registry more recently than 86% of the other 32415 servers in this category
Basic checks equal to or better than 100% of the other 32415 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 Sandboxrun safe?

It passed 1 of 1 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 on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 5 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js, Docker on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Safe Fetch

Alternatives

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

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Runs on your computer★ 440MITUpdated 14 months ago

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Runs in the cloud★ 211Updated yesterday

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Safe Fetch

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Runs on your computerUpdated today

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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.

sandboxrun

sandboxrun gives an agent a safe place to run code it just wrote. Hand it a snippet and it comes back with what the snippet printed, the values it produced, and any error it hit — all executed inside a short-lived E2B sandbox, never on your own machine. It runs from the command line or as an MCP server for agents.

An E2B API key is required. Put it in the E2B_API_KEY environment variable; the key is sent to the API as the X-API-Key header and never appears in output. When the variable is missing, every run fails with an error that names it.

Install

npx @reneturcios/sandboxrun run "print(6 * 7)"

Or run the container image:

docker run -i -e E2B_API_KEY ghcr.io/cloudcorprecords/sandboxrun

The container defaults to the MCP server (see below). Pass CLI arguments to use it as a CLI instead.

CLI

export E2B_API_KEY="your E2B API key"

Run a snippet inline

sandboxrun run "print('hello from the sandbox')"

Run a file's contents

sandboxrun run --file analysis.py

Machine-readable output

sandboxrun run "import math; print(math.pi)" --json

sandboxrun --version

Exit codes: 0 on success, 1 when a run fails (including a missing E2B_API_KEY, an API error, or an error raised by the code itself), 2 for usage errors.

MCP server

One bin serves both faces. The mcp subcommand starts a stdio MCP server:

npx -y @reneturcios/sandboxrun mcp

MCP client configuration:

"mcpServers": { "sandboxrun": { "command": "npx", "args": ["-y", "@reneturcios/sandboxrun", "mcp"], "env": { "E2B_API_KEY": "your E2B API key" } } } }

Tools

Tool	Input	What it returns
`run_code`	`code` (string, required)	The execution as a text block: the sandbox id, printed output, structured results, log lines, and any error the code raised. Code uses Jupyter notebook syntax.

The documented E2B MCP server exposes this single tool, and sandboxrun exposes exactly that tool — nothing extra.

Under the hood each call creates a fresh sandbox from the code-interpreter template (POST https://api.e2b.app/sandboxes) and then executes the code in it. The upstream SDK talks to the sandbox's Jupyter kernel over a websocket channel; this rebuild shapes the execution as a REST request behind the same seam and records that transport simplification in its build report.

Development

npm install

npm run build # tsc -> dist/ npm test # node test runner over test/*.test.ts, no network (fake fetch fixtures) npm run dev # run the CLI from source via tsx

License

MIT — see LICENSE.

Sandboxrun

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

Safe Fetch

README from the maker

sandboxrun

Install

CLI

Run a snippet inline

Run a file's contents

Machine-readable output

MCP server

Tools

Development

License