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E2B

Secure cloud sandboxes for executing AI-generated code.

Setup: 5 minLow complexityTop MCPs for Coding →

What it does

Spins up secure cloud sandbox environments and executes AI-generated code inside them, returning output without affecting the host system.

Why it matters

Running AI-generated code locally is risky. E2B provides safe, disposable containers that make code execution safe for both developers and autonomous agents.

Best for

  • Safe code execution
  • AI coding agents
  • Data processing scripts
  • Test execution
  • Disposable compute

Not ideal for

  • Latency-sensitive operations
  • Trusted local execution needs
  • Long-running processes

When to use it

When you want the AI to write and run code, test scripts, process data, or execute any code in a safe, isolated environment.

When not to use it

When code execution speed is critical (cloud sandboxes add latency), or when working with fully trusted code in a controlled environment.

Key features

  • Isolated cloud sandboxes
  • Multi-language support
  • Disposable containers
  • Secure execution
  • Output capture

Frequently asked questions

Is E2B free?

E2B has a free tier with limited sandbox minutes. Paid plans are available for higher usage.

Which languages are supported?

Python, JavaScript, TypeScript, Bash, and more. Any language can be run via shell commands.

Install

Install E2B
$ npx @e2b/mcp-server

Scores

Ease of setup
4/5
Flexibility
4/5
Popularity
4/5
Agent useful
5/5
Builder speed
4/5

Details

Pricing
freemium
Setup time
5 min
Complexity
Low

Works with

ClaudeAny MCP-compatible client
View on GitHub

Alternatives

  • Filesystem →

    Read and write local files with configurable access controls.

  • Puppeteer →

    Full browser automation: navigate, click, screenshot, and scrape.

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