input-output-sanitization

To prevent injection attacks in MCP server request handling, you need rigorous input validation to check and sanitize user, LLM, and tool-generated data. This stops malicious data propagation before processing.

Output sanitization in MCP servers cleanses responses before they reach clients or other tools, ensuring safe data exchange. You need it when developing servers that process user commands to minimize security risks.

You validate incoming parameters and sanitize outgoing responses by applying strict input and output checks across all request and response handling. This ensures data integrity and prevents traversal attacks.

Yes, this input validation approach protects against path traversal by checking and sanitizing tool-generated data. It enforces strict validation rules to prevent malicious data propagation across the server.

Relying solely on input validation leaves outgoing responses unchecked, risking cross-tool contamination. Output sanitization is also required to cleanse responses and ensure safe data exchange before reaching clients.