WonderwallAi is an open-source AI firewall SDK that protects your LLM apps from prompt injection, jailbreaks, data leaks, and off-topic abuse. Three lines of code, under 2ms latency, zero external API calls. Catches API keys and personal data leaking in responses, strips metadata from uploaded files, and keeps your chatbot on-topic so users can't break it. MIT licensed and self-hostable. Hosted version available with dashboard, audit logs, and team controls. pip install wonderwallai.