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Documentation Index

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Klavis Security

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Overview

Klavis Guardrails is a comprehensive security layer designed to protect MCP (Model Context Protocol) integrations from emerging threats. It operates as an intelligent proxy between MCP clients and servers, providing real-time threat detection and policy enforcement.

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The Security Challenge

MCP’s architecture amplifies security risks by exposing tools, resources, and prompts directly to AI agents. Recent vulnerabilities demonstrate critical flaws:
  • Prompt Injection via Tool Descriptions: Malicious instructions embedded in MCP tool metadata
  • Cross-Repository Information Leakage: Agents coerced into accessing private repositories
  • Command Injection and RCE: Basic security flaws allowing arbitrary code execution
  • Credential Theft: MCP servers storing OAuth tokens become high-value targets
MCP Vulnerabilities

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Security Architecture

Klavis Security Architecture Klavis Guardrails operates as a security proxy that intercepts, analyzes, and enforces policies on all MCP communication in real-time with four key protection mechanisms: Tool Poisoning Detection: Monitors MCP tool metadata using behavioral analysis to identify when tools deviate from declared functionality. Prompt Injection Prevention: Uses advanced NLP to analyze prompts for malicious instructions, detecting sophisticated attacks before they reach the model. Privilege Escalation Monitoring: Enforces granular access controls ensuring MCP servers operate under least privilege principles. Command Injection Mitigation: Performs deep inspection of tool invocations with strict allowlists and input sanitization.