theskillcity
API KeyMarkdownProject ModeMarket SkillsDocsWorkspace

Discover the toolingbehind modern intelligence

The operating system for AI infrastructure discovery. Search a live map of MCP servers, AI agents, LLM tools, automation systems, and developer infrastructure.

 
 
In active build — expect changes
Indexing Status

Find your way around

© 2026 theskillcity · Independent open-source indexBuilt in public · v0 beta
theskillcity

Discover the toolingbehind modern intelligence

A live, classified map of MCP servers, AI agents, LLM tooling, automation systems, and developer infrastructure — searchable in one place.

⌘K
TrendingRecent

FAQ

Frequently asked questions

A live, classified index of the open-source tooling behind modern AI — MCP servers, AI agents, LLM tooling, automation systems, skills and developer infrastructure — all searchable and mapped in one place. The homepage cityscape lets you explore by category; everything else is a click away.

0skills
0MCP servers
0agents

Browse by domain — interactive skyline. Each building links to a domain.

DEVTOOLSLLMAGENTSAUTOMATIONWORKCLOUDWRITINGSECURITYWEB/APPMEDIADATA/ML
153All domains

Security Engineering

153

Penetration testing, security auditing, cryptography, encryption, and network security utilities.

Specializations

AllPentesting & Offensive210 reposVulnerability Scanning178 reposGeneral153 reposAuth & Identity85 reposSecrets & Compliance71 reposCryptography35 repos
0specializations
0repos
0skills
0MCP servers
0agents
anthropics

defending-code-reference-harness

anthropics
SKILL

Skills for threat modeling, scanning, triage, patching, plus an autonomous scanning harness you can /customize

Security Engineering#security
5.8k413Python
beelzebub-labs

beelzebub

beelzebub-labs
MCP

A secure low code deception runtime framework, leveraging AI for System Virtualization.

Security Engineering#acis#agentic-ai-security
2.0k198Go
slowmist

MCP-Security-Checklist

slowmist
MCP

A comprehensive security checklist for MCP-based AI tools. Built by SlowMist to safeguard LLM plugin ecosystems.

Security Engineering
82771
OTT-Cybersecurity-LLC

lyrie-ai

OTT-Cybersecurity-LLC
SKILL

Lyrie.ai — The world's first autonomous AI cybersecurity agent. Built by OTT Cybersecurity LLC.

Security Engineering#ai-agent#autonomous
52456TypeScript
google

mcp-security

google
MCP + SKILL

No description provided.

Security Engineering
483116Python
MHaggis

Security-Detections-MCP

MHaggis
MCP + SKILL

MCP to help Defenders Detection Engineer Harder and Smarter

Security Engineering#detection-engineering#mcp
44366TypeScript
ghostsecurity

skills

ghostsecurity
SKILL

Ghost Security's collection of AppSec skills for AI coding agents

Security Engineering#agent-skills#agents
38226Shell
lissy93

bug-bounties

lissy93
MCP

⚔️ A compiled list of companies who have active programs for responsible disclosure. MCP-enabled.

Security Engineering#ai-security#bugbounty
24434TypeScript
semgrep

skills

semgrep
SKILL

A collection of skills for AI coding agents from Semgrep

Security Engineering#agents#claude-code
21929JavaScript
briiirussell

cybersecurity-skills

briiirussell
SKILL

Cybersecurity skills for AI coding agents (Claude Code, Cursor, Codex)

Security Engineering
20912JavaScript
SCStelz

security-investigator

SCStelz
SKILL

Automated security investigation tool using Microsoft MCP Servers, GitHub Copilot, Python Modules and custom copilot-instructions.

Security Engineering
19950Python
trynullsec

nullsec-s1

trynullsec
MCP

Security-native LLM system for AI-generated application security.

Security Engineering#ai-security#appsec
16952Python
wiz-sec-public

SITF

wiz-sec-public
SKILL

A comprehensive framework for analyzing and defending against attacks targeting Software Development Life Cycle Infrastructure.

Security Engineering#agent-skills#sdlc-security
16417HTML
huifer

skill-security-scan

huifer
SKILL

skill-security-scan is a command-line tool designed to scan and detect security risks in Claude Skills. Before installing third-party Skills, use this tool for security review to effectively prevent malicious code from stealing data or compromising your system.

Security Engineering#claude-code#skills
14511Python
LF-Decentralized-Trust-labs

gitmesh

LF-Decentralized-Trust-labs
SKILL

GitMesh: Policy-as-Code Engine for Open Source AI Agent Orchestration

Security Engineering#open-source#policy-as-code
14148TypeScript
w0h1v

mcp-virustotal

w0h1v
MCP

MCP server for VirusTotal API — analyze URLs, files, IPs, and domains with comprehensive security reports, relationship analysis, and pagination support.

Security Engineering#ai-tools#claude
13320TypeScript
BurtTheCoder

mcp-virustotal

BurtTheCoder
MCP

MCP server for VirusTotal API — analyze URLs, files, IPs, and domains with comprehensive security reports, relationship analysis, and pagination support.

Security Engineering#ai-tools#claude
13120TypeScript
antropos17

Aegis

antropos17
SKILL

Open-source EDR for AI agents. Monitor processes, files, network, and behavior of autonomous AI agents.

Security Engineering#ai#ai-agents
13119JavaScript
thebabush

mcp-job-security

thebabush
MCP

LLVM Pass to save Reverse Engineers from Automation

Security Engineering
1199C++
TryMightyAI

mighty-security

TryMightyAI
MCP

Don't Simply Trust MCP Server Code, Validate and Scan

Security Engineering
1014Python
spring-ai-community

mcp-security

spring-ai-community
MCP

Spring Security Configuration for MCP

Security Engineering
9618Java
zoomeye-ai

mcp_zoomeye

zoomeye-ai
MCP

A Model Context Protocol server that provides network asset information based on query conditions. This server allows LLMs to obtain network asset information and supports querying network asset information by zoomeye dork etc.

Security Engineering#cybersecurity#osint
7417Python
mcp-security-standard

mcp-server-security-standard

mcp-security-standard
MCP

MCP Server Security Standard (MSSS): an open, testable security control standard for certifying MCP servers, with levels, evidence requirements, and reporting schemas.

Security Engineering#cybersecurity#mcp
7313
OWASP

www-project-mcp-top-10

OWASP
MCP

OWASP MCP Top10

Security Engineering#mcp-security#mcptop10
6922HTML