How fast do the sandboxes start?

The Firecracker microVMs have a cold start time of approximately 150ms.

What languages can I run?

You can use templates for Python, Node, or a base Linux environment to run various code and shell commands.

Is my code execution secure?

Yes, each execution happens in an isolated microVM with its own kernel and filesystem, providing strong isolation from your local machine.

How do I manage costs?

You can use the kill_sandbox capability to terminate environments as soon as they are no longer needed, which releases resources.

Which AI clients work with this MCP?

This MCP works with any compatible client, including Claude, Cursor, and Windsurf.

How secure are E2B sandboxes?

E2B sandboxes run as dedicated Firecracker microVMs. the same technology used by AWS Lambda and Fargate. Each sandbox has its own Linux kernel, filesystem, and network stack, providing hardware-level isolation. Code running in a sandbox cannot access your host system, other sandboxes, or any external resources unless explicitly configured.

What programming languages are supported?

E2B supports Python, JavaScript/TypeScript, R, Java, and Bash out of the box. You can also create custom sandbox templates with any pre-installed capabilities, libraries, or system dependencies. The base template provides a full Ubuntu Linux environment where you can install anything via apt or pip.

How does E2B pricing work?

E2B uses usage-based pricing billed per second of compute time. The free Hobby plan includes a one-time $100 credit (no credit card required), up to 20 concurrent sandboxes, and 1-hour maximum session length. The Pro plan starts at $150/month with 24-hour sessions and higher concurrency limits.

An astronaut overseeing a futuristic data hub

Download PDF Markdown Version

Connect E2B to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Give your agent a safe place to run code.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through E2B.

01
List sandboxes
Lists all currently active sandboxes in your account. Use this to monitor resource usage and see what environments are running.
02
Create sandbox
Creates a new isolated Linux microVM for secure code execution. You can choose templates like python3 or node to set up the environment in about 150ms.
03
Kill sandbox
Terminates a running sandbox immediately. This deletes the environment and its filesystem to free up resources.

Real work

What teams actually run

Autonomous Coding Agents

Let your agent write, test, and debug code in a safe, isolated container.

Automated Data Analysis

Run Python scripts to process datasets and generate results in a clean environment.

Safe Code Education

Create platforms where users can run code snippets without any risk to the host system.

Dynamic Capability Execution

Allow an agent to generate and run its own custom shell commands to solve complex problems.

Automate a task

Put E2B to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

E2B works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put E2B to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

966ms average. Fast in production.

E2B is checked daily against the live service.

Daily averagePeak 1169ms

Oct 3Today

Fastest day: 666ms
Slowest day: 1169ms
14-day trend: Slowing+38%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of E2B, so you can see the experience inside your AI.

It does not authenticate your account with E2B. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

E2B Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_3CRPqmTDsCByQOyZDcriXUCwkogoOvQeH8PdgsKD/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — E2B capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "e2b-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_3CRPqmTDsCByQOyZDcriXUCwkogoOvQeH8PdgsKD/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up E2B in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work E2B owners hand off.

This MCP is built for developers building autonomous agents that need to interact with the real world through code.

01
AI Agent Developers
They hand off code execution tasks to the agent to prevent running untrusted code on their own hardware.
02
Data Science Teams
They use sandboxes to run analysis scripts in environments that guarantee reproducibility.
03
EdTech Engineers
They provide students with isolated spaces to run code without compromising the platform's security.

FAQ

Questions E2B owners ask.

01
How fast do the sandboxes start?
The Firecracker microVMs have a cold start time of approximately 150ms.
02
What languages can I run?
You can use templates for Python, Node, or a base Linux environment to run various code and shell commands.
03
Is my code execution secure?
Yes, each execution happens in an isolated microVM with its own kernel and filesystem, providing strong isolation from your local machine.
04
How do I manage costs?
You can use the kill_sandbox capability to terminate environments as soon as they are no longer needed, which releases resources.
05
Which AI clients work with this MCP?
This MCP works with any compatible client, including Claude, Cursor, and Windsurf.
06
How secure are E2B sandboxes?
E2B sandboxes run as dedicated Firecracker microVMs. the same technology used by AWS Lambda and Fargate. Each sandbox has its own Linux kernel, filesystem, and network stack, providing hardware-level isolation. Code running in a sandbox cannot access your host system, other sandboxes, or any external resources unless explicitly configured.
07
What programming languages are supported?
E2B supports Python, JavaScript/TypeScript, R, Java, and Bash out of the box. You can also create custom sandbox templates with any pre-installed capabilities, libraries, or system dependencies. The base template provides a full Ubuntu Linux environment where you can install anything via apt or pip.
08
How does E2B pricing work?
E2B uses usage-based pricing billed per second of compute time. The free Hobby plan includes a one-time $100 credit (no credit card required), up to 20 concurrent sandboxes, and 1-hour maximum session length. The Pro plan starts at $150/month with 24-hour sessions and higher concurrency limits.

Explore

More in Superpower

Connect E2B to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

List sandboxes

Create sandbox

Kill sandbox

What teams actually run

Autonomous Coding Agents

Automated Data Analysis

Safe Code Education

Dynamic Capability Execution

Building your own app? The connector is yours to use.

E2B Connector

Claude Desktop

AI Agent Developers

Data Science Teams

EdTech Engineers

How fast do the sandboxes start?

What languages can I run?

Is my code execution secure?

How do I manage costs?

Which AI clients work with this MCP?

How secure are E2B sandboxes?

What programming languages are supported?

How does E2B pricing work?

Code Integrity Prover AI Connector

CodeRabbit AI Connector

Code Clone Detector AI Connector

Code Climate AI Connector

Suggestions

Wine Micro-oxygenation Kinetics AI Connector

Codecov AI Connector

Coder (Remote Dev) AI Connector

Vertiv Environet AI Connector