# E2B

> Firecracker sandboxes for untrusted agent code

**Category:** AI Agents  
**Pricing:** freemium  
**URL:** https://e2b.dev  
**Added:** 2026-08-19

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## The Hook

E2B gives agents a safe place to run untrusted code.

## What's Good

When your agent writes code, where does it run? E2B provides Firecracker-based sandboxes—lightweight VMs that spin up in milliseconds, execute untrusted code, and tear down cleanly. The infrastructure lets agents be dangerous without risking your systems. SDKs for Python and TypeScript.

## The Catch

Hosted by default. You are sending code to E2B infrastructure. Self-hosting is possible but requires more work. Another external dependency in your agent stack.

## Verdict

Safe sandboxes for agent-generated code. Hosted convenience.