> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mistle.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# E2B

> Connect E2B sandbox runtime access to Mistle

## Overview

E2B provides a sandbox runtime for running Mistle sandboxes with an organization-owned E2B API key.

Use this connection when a sandbox profile should use workspace-owned E2B credentials instead of deployment-level runtime credentials.

## Connect In Mistle

Open **Integrations** in the dashboard, choose **E2B**, then select **API key**.

Enter:

| Field   | Value       |
| ------- | ----------- |
| API key | E2B API key |

## Use With A Sandbox Profile

After the connection exists:

1. Open the sandbox profile that should run on E2B.
2. Choose **E2B** as the sandbox runtime.
3. Select the E2B credentials connection.
4. Save and publish the profile version.

For self-hosted deployments, the E2B runtime must also be enabled in deployment configuration before profiles can use it.