The fastest way to mitigate prompt injection in agent workflows involves a layered approach, primarily focusing on robust system prompts and input/output filtering. Implementing a strong system prompt that explicitly defines the agent's role, constraints, and instructions to ignore conflicting user inputs is crucial for initial defense. Concurrently, apply strict input validation to sanitize user queries for known malicious patterns before they reach the agent, though this isn't foolproof against novel attacks. Furthermore, always employ output sanitization and response filtering to ensure the agent's actions or outputs do not contain injected commands or sensitive data before execution or display. For agents with external tool access, immediately implement least privilege access to limit potential damage from successful injections. These measures, combined, offer a rapid and effective initial barrier against prompt injection. More details: https://kashira-plus.ru/index.php?CCblLKA=https://infoguide.com.ua/