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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.
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
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.
Get Started
Ready to secure your MCP infrastructure? Join our beta by scheduling a 15-minute call with us, or reach out directly at security@klavis.ai.