Introducing MCPGrade: Securing Model Context Protocol Servers in 2026

SentinelReign, led by founder and CEO Syed Zada Abrar, introduced MCPGrade, a 39-check rating algorithm for securing Model Context Protocol (MCP) servers. An audit of 5,308 public MCP endpoints revealed that 65% lack transport authentication, exposing tool execution capabilities. MCPGrade assesses transport authentication, tool scope, input validation, and rate limiting to help developers secure their MCP deployments.

BLUF / Executive Summary: Target:Model Context Protocol MCP HTTP/SSE Server endpoints.Discovery:Audit of 5,308 public MCP endpoints revealed65% lack transport authentication.Solution:IntroducingMCPGrade , a 39-check rating algorithm. mcpgrade-1.4.0 The Model Context Protocol MCP is now the standard for connecting AI models to tools and data. But as developers deploy MCP servers, security has lagged. In our audit of 5,308 public MCP servers under SentinelReign research, over 3,450 servers 65% exposed tool execution capabilities without authentication. mcpgrade-1.4.0 Matrix | Assessment Domain | Checks | Impact Weight | |---|---|---| 1. Transport Authentication | 10 Checks | 35% | 2. Tool Scope & Authorization | 12 Checks | 30% | 3. Input Validation & Injection | 9 Checks | 20% | 4. Rate Limiting & Audit Logging | 8 Checks | 15% | Check out the full teardown and live A-F scanner at Andrax Pentester https://andraxpentester.in/articles/introducing-mcpgrade-and-mcp-security-scanner . Written by Syed Zada Abrar — Founder & CEO of SentinelReign https://sentinelreign.com .