Cloudflare Sandboxes SDK

Status: Production Ready (Open Beta) Last Updated: 2025-12-10 Dependencies: cloudflare-worker-base, cloudflare-durable-objects (recommended for understanding) Latest Versions: @cloudflare/sandbox@0.6.3, Docker image: cloudflare/sandbox:0.6.3-python

⚠️ BREAKING CHANGE (v0.6.0): Python is no longer included in the default image. Use cloudflare/sandbox:<version>-python for Python support (~1.3GB with data science packages). The lean variant (~600-800MB) excludes Python.

Quick Start (15 Minutes)

1. Install SDK and Setup Wrangler

bun add @cloudflare/sandbox@latest  # preferred
# or: bun add @cloudflare/sandbox@latest