SandboxAPI

Name: SandboxAPI
Author: sandboxapi

by sandboxapiversion 1.0.0i★ 2 (Stars belong to another repo)iRuns in the cloud

Registry nameio.github.MichielDeRuiter/sandboxapi-mcp

How to install

Overview

Description from the maker (original English)

Execute code in 8 languages (Python, JS, TS, Go, Java, C++, C, Bash) in gVisor sandboxes.

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: Developer tools

Install

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

Passed 1/4 checks · What you ask goes through the maker’s server (mcp.sandboxapi.dev)

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude · about 2 min

No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1

Open Claude’s Connectors page
CustomizeConnectors
Done
Click “+ Add” → “Add custom connector” and fill in these 2 fields
Copy each value into the field with the same name in Claude, then click Continue
Name · NameSandboxAPI
Remote MCP server URL · Addresshttps://mcp.sandboxapi.dev/mcp
Leave Authentication as Claude detected it, then click Add
Done
Turn it on in a chat
+ConnectorsSandboxAPI
Done
Try it
Use SandboxAPI and tell me what you can do for me, then show me one thing
✓ If Claude says it is using SandboxAPI or shows a SandboxAPI tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with ChatGPT on business plans only

ChatGPT Business, Enterprise or Edu on the web, added by a workspace admin or owner · On Free, Plus or Pro: your ChatGPT plan cannot connect MCP yet

Open ChatGPT’s add-MCP page on the web
Plugins+Add custom MCP server
Done
Fill in the name and address
Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin
Name · NameSandboxAPI
Connection · Addresshttps://mcp.sandboxapi.dev/mcp
Done
Pick SandboxAPI in a chat
Start a new chat and pick SandboxAPI from your plugins before typing
Done
Try it
Use SandboxAPI and tell me what you can do for me, then show me one thing
✓ If ChatGPT says it is using SandboxAPI or shows a SandboxAPI tool in the answer, you are connected

Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Claude Code · about 2 min

No key, nothing to install

Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add --transport http sandboxapi https://mcp.sandboxapi.dev/mcp

Done

Type /mcp in Claude Code
You should see SandboxAPI listed as connected
Done
Try it
Use SandboxAPI and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using SandboxAPI or shows a SandboxAPI tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor · about 2 min

No key, nothing to install

Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use SandboxAPI and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using SandboxAPI or shows a SandboxAPI tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code · about 2 min

No key, nothing to install

Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use SandboxAPI and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using SandboxAPI or shows a SandboxAPI tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

Address for apps that connect over the web

Addresshttps://mcp.sandboxapi.dev/mcp

JSON settings are under “For developers” below

Stuck? Ask people who use SandboxAPI💬 Discussion →

For developers: Terminal commands and JSON settings

Over the web

Claude Code

claude mcp add --transport http sandboxapi https://mcp.sandboxapi.dev/mcp

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "sandboxapi": {
      "url": "https://mcp.sandboxapi.dev/mcp"
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "sandboxapi": {
      "type": "http",
      "url": "https://mcp.sandboxapi.dev/mcp"
    }
  }
}

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

At a glance

GitHub stars i: 2 (Stars belong to another repo)
This listing points to someone else’s repo, so its stars are not counted in rankings
Downloads per weeki: Not on npm/PyPI
Licence i: No licence stated
Connection: Runs in the cloud
Transport: streamable-http
Latest versioni: 1.0.0
Categoryi: Developer tools
Published to registryi: Apr 5, 2026
Code last changedi: Apr 5, 2026
Maker: sandboxapi
Repo: sandboxapi/sandboxapi-mcp
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

Claude ChatGPT Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Open WebUI Raycast

All apps, with pros and cons →

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 11, 2026

! Caution
Maker matches the repo
The publisher (MichielDeRuiter) is not the repo owner (sandboxapi); someone else may have listed it
! Caution
Still maintained
Code last changed 7 months ago, more than 6 months ago
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 337 ms (HTTP 401)
! Caution
Sign-in with OAuth
Needs a key or token that you copy and paste yourself
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Developer toolsi

More stars than 0% of the other 5755 servers in this category
Published to the registry more recently than 8% of the other 5755 servers in this category
Basic checks equal to or better than 5% of the other 5755 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 SandboxAPI safe?

It passed 1 of 4 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 7 months ago, and the latest version (1.0.0) reached the registry 7 months 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 Business and above.

What can I use instead?

In the same category: REA, Netdata, Front-End Checklist

Alternatives

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

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

REA

Reverse engineer anything from your terminal or agent with one CLI and MCP server.

by morlutoWidely used↓ 388.7K/wk★ 448.2KUpdated 17 days ago

Runs on your computer

Install

Netdata

Real-time infrastructure monitoring with metrics, logs, alerts, and ML-based anomaly detection.

by netdataWidely used★ 81.3KUpdated 7 days ago

Runs in the cloud

Install

Front-End Checklist

Review frontend code and live pages against 386 quality-gated web development rules.

by thedaviddiasWidely used★ 74.7KUpdated 37 days ago

Runs in the cloud

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.

SandboxAPI MCP Server

Give your AI agent the ability to execute code in 8 programming languages, safely.

SandboxAPI MCP Server connects any MCP-compatible AI client (Claude, Cursor, VS Code, Windsurf, etc.) to secure code execution. Every execution runs inside a gVisor-sandboxed Docker container with no network access, strict resource limits, and ephemeral filesystems.

Quick Start

Option 1: Remote Server (No Setup)

Connect directly to the hosted endpoint. No local installation required.

Claude Desktop (claude_desktop_config.json):

"mcpServers": { "sandboxapi": { "url": "https://mcp.sandboxapi.dev/mcp", "headers": { "Authorization": "Bearer YOUR_API_KEY" } } } }

VS Code (.vscode/mcp.json):

"servers": { "sandboxapi": { "url": "https://mcp.sandboxapi.dev/mcp", "headers": { "Authorization": "Bearer YOUR_API_KEY" } } } }

Cursor (~/.cursor/mcp.json):

"mcpServers": { "sandboxapi": { "url": "https://mcp.sandboxapi.dev/mcp", "headers": { "Authorization": "Bearer YOUR_API_KEY" } } } }

Option 2: Docker

docker run -d \

-p 8081:8081 \ -e SANDBOXAPI_API_KEY=your_sandboxapi_key \ -e MCP_API_KEY=your_mcp_auth_key \ sandboxapi/mcp:latest

Then point your client to http://localhost:8081/mcp.

Option 3: Build from Source

git clone https://github.com/sandboxapi/sandboxapi-mcp.git

cd sandboxapi-mcp go build -o sandboxapi-mcp .

export SANDBOXAPI_API_KEY=your_key export MCP_API_KEY=optional_auth_key ./sandboxapi-mcp

Available Tools

`execute_code`

Execute code in a sandboxed container.

Parameter	Type	Required	Description
`language`	string	Yes	`python3`, `javascript`, `typescript`, `bash`, `java`, `cpp`, `c`, `go`
`code`	string	Yes	Source code to execute (max 1MB)
`timeout`	number	No	Timeout in seconds (default: 10, max: 300)
`stdin`	string	No	Standard input to pass to the program

`execute_batch`

Execute multiple code snippets. Each runs in its own isolated sandbox.

Parameter	Type	Required	Description
`executions`	array	Yes	Array of `{language, code, timeout?, stdin?}` objects

`list_languages`

List all supported programming languages with versions and example code. No parameters.

Supported Languages

Language	Version	Aliases
Python	3.12	`python3`, `python`, `py`
JavaScript	Node 22	`javascript`, `js`, `node`
TypeScript	5.4	`typescript`, `ts`
Go	1.22	`go`, `golang`
Java	21	`java`, `jdk`
C++	GCC 14	`cpp`, `c++`
C	GCC 14	`c`, `gcc`
Bash	5.2	`bash`, `sh`, `shell`

Environment Variables

Variable	Required	Description
`SANDBOXAPI_API_KEY`	Yes	API key for the SandboxAPI backend
`MCP_API_KEY`	No	Auth key for the MCP endpoint (omit for open access)
`MCP_PORT`	No	Port to listen on (default: `8081`)
`SANDBOXAPI_URL`	No	API base URL (default: `https://api.sandboxapi.dev`)

Security

Every code execution is isolated with defense-in-depth:

gVisor (runsc) — User-space kernel intercepts all syscalls
Network isolation — Executed code cannot make outbound connections
Resource limits — CPU, memory, and disk usage are capped
Ephemeral containers — Destroyed immediately after execution
Read-only filesystem — No persistent writes between executions
Code size limits — Source code capped at 1MB
Timeout enforcement — Hard kill after configured timeout

API Key

Get your API key at sandboxapi.dev or through RapidAPI.

License

MIT

SandboxAPI

Overview

What you can do with it

Install

Open Claude’s Connectors page

Click “+ Add” → “Add custom connector” and fill in these 2 fields

Turn it on in a chat

Try it

Open ChatGPT’s add-MCP page on the web

Fill in the name and address

Pick SandboxAPI in a chat

Try it

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Over the web

At a glance

Which apps can use it

Related guides

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

Discussion

User reviews

Compared with others in Developer toolsi

Common questions

Alternatives

REA

Netdata

Front-End Checklist

README from the maker

SandboxAPI MCP Server

Quick Start

Option 1: Remote Server (No Setup)

Option 2: Docker

Option 3: Build from Source

Available Tools

execute_code

execute_batch

list_languages

Supported Languages

Environment Variables

Security

API Key

Links

License

`execute_code`

`execute_batch`

`list_languages`