Testing MCP Server Security

Testing MCP Server Security is an AI Engineering skill for Claude Code, published by xalgord in xalgorix.

852 stars151 forkson xalgord/xalgorixAdded 2026/07/20+1% in starsRepository updated 2026/08/04

ai-agentai-securityautomationautonomous-pentestingbug-bountycybersecurityethical-hackinggolangpenetration-testingpentestpentesting-toolsreconsecuritysecurity-researchsecurity-toolstypescriptvulnerability-detectionvulnerability-scanner

Install in seconds

Install Testing MCP Server Security

Copy Testing MCP Server Security into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/xalgorix/xalgorix/tree/main/internal/tools/skills/data/ai-security/testing-mcp-server-security ~/.claude/skills/testing-mcp-server-security

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/xalgorix/xalgorix.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: internal/tools/skills/data/ai-security/testing-mcp-server-security/SKILL.md in xalgord/xalgorix
Installs to: ~/.claude/skills/testing-mcp-server-security
Collection: One of 51 skills cataloged from this repository
Category: AI Engineering — 3670 skills

What Testing MCP Server Security does

Testing Model Context Protocol (MCP) servers and the clients that consume them for tool poisoning, prompt injection, and credential exposure. Use during security assessments of AI agents and IDEs.

Testing MCP Server Security is cataloged under AI Engineering on DirSkills. Testing MCP Server Security comes from a repository tagged ai-agent, ai-security, automation, autonomous-pentesting and bug-bounty.

Documentation

README

Excerpt

Testing MCP Server Security

When to Use

During authorized assessments of AI agents/IDEs (Cursor, Claude Code/Desktop, Flowise) that load MCP servers
When reviewing third-party or marketplace MCP servers/skills before or after deployment
When an MCP server runs locally over stdio and inherits the user's OS credentials
When testing whether tool descriptions, schemas, or outputs can inject instructions into the model
When assessing MCP config trust, update/supply-chain risk, and transport-layer auth gaps

Prerequisites

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Testing MCP Server Security

What else does xalgord publish alongside Testing MCP Server Security?
Testing MCP Server Security is one of 51 skills that DirSkills catalogs from xalgord/xalgorix, the repository it ships in. Its siblings there include AFL++ Fuzzing, AI Security Guardrails and AI-Assisted Vulnerability Discovery. Each one is a separate skill with its own page in this directory, installs the same way Testing MCP Server Security does, and is maintained by xalgord in that same repository. The rest of the collection is listed on the xalgord/xalgorix page.
How does Testing MCP Server Security compare to other AI Engineering skills?
Testing MCP Server Security ranks #1535 by stars among the 3670 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Testing MCP Server Security against them. Open each page to compare what they document and how they install.