As GenAI applications grow more complex, the Model Context Protocol (MCP) has emerged as a critical standard for connecting AI models to real-world data and tools, but it also introduces security vulnerabilities that traditional defenses may not address. Lakera specializes in securing AI-native systems against such threats, offering Lakera Guard as a solution for protecting MCP-based systems without disrupting development. Lakera Guard can detect threats like prompt injections and data leaks with minimal latency by analyzing inputs and outputs in real-time. Implementing security measures in MCP servers is straightforward, requiring just a single line of code, and can be applied to various server components such as tools, prompts, and resources. The example provided demonstrates how to secure a simple MCP server using Lakera Guard, illustrating that a single API call can make the difference between a secure application and a potential failure.