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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.

 
 
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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.

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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
77All domains

Developer Tooling

77

CLIs, IDE & editor integrations, git/GitHub, linters, file ops, terminals, and MCP SDKs.

Specializations

AllMCP SDKs & Servers25.9k reposTerminals & Shells609 reposEditors & IDEs416 reposGit & GitHub354 reposGeneral199 reposTesting & Debugging77 reposLinters & Formatters64 repos
0specializations
0repos
0skills
0MCP servers
0agents
addyosmani

web-quality-skills

addyosmani
SKILL

Agent Skills for optimizing web quality based on Lighthouse and Core Web Vitals.

Developer Tooling#accessibility#agent-skills
2.3k208Shell
AvdLee

RocketSimApp

AvdLee
SKILL

RocketSim — 30+ tools for Xcode's iOS Simulator. Testing, debugging, network monitoring, captures, accessibility, app actions, and AI agent automation via the RocketSim CLI. Used by 80k+ developers.

Developer Tooling#accessibility#agent-skill
74933Swift
AvdLee

Swift-Testing-Agent-Skill

AvdLee
SKILL

An agent skill focused entirely on Swift Testing, helping you write better tests, migrate from XCTest, improve test architecture, and adopt modern Swift testing patterns with confidence.

Developer Tooling#agent-skills#swift
39518
Axolotl-QA

Axolotl

Axolotl-QA
SKILL

AI-powered QA agent for VS Code. Analyzes code changes, generates test plans, runs real browser tests, and delivers evidence-backed merge verdicts.

Developer Tooling#code-generation#developer-tools
21532TypeScript
av

facts

av
SKILL

Antidote for fluffy specs, a toolkit for fact-driven development with AI agents

Developer Tooling#agents#claude-code
1827Rust
bocato

swift-testing-agent-skill

bocato
SKILL

Agent Skill providing expert Swift Testing guidance for AI coding tools: covering test doubles, fixtures, async patterns, XCTest migration, and testing best practices.

Developer Tooling#agent-skills#ai-coding-assistant
742
Drjacky

claude-android-ninja

Drjacky
SKILL

Agent Skill for Android development with Kotlin and Jetpack Compose, covering modular architecture, Navigation3, Gradle conventions, dependency management, and testing best practices.

LLM & GenAI Engineering#android#claude
588Kotlin
smelloscope

smello

smelloscope
SKILL

A developer tool that captures outgoing HTTP requests from your code and displays them in a local web dashboard

Developer Tooling#debugging#developer-tools
550Python
syrin-labs

cli

syrin-labs
MCP

Runtime intelligence system that makes MCP servers debuggable, testable, and safe to run in production.

Developer Tooling#ai-agent-testing#ai-agents
473TypeScript
lessthanseventy

excessibility

lessthanseventy
SKILL

Accessibility snapshot testing for Phoenix LiveView - capture HTML during tests, run Pa11y for WCAG compliance, debug with AI-friendly timeline analysis

Developer Tooling#a11y#accessibility
405Elixir
everr-labs

everr

everr-labs
SKILL

No description provided.

Developer Tooling#ai-tools#ci-cd
330TypeScript
asynkron

asynkron-skills

asynkron
SKILL

ASYNKRON developer tools skills — profiler, test runner, code duplication detector, and line counter

Developer Tooling
313JavaScript
dodobrands

Peekie

dodobrands
SKILL

Swift package for parsing Xcode .xcresult files with support for XCTest and Swift Testing frameworks

Developer Tooling#ci-cd#code-coverage
254Swift
cypress-io

ai-toolkit

cypress-io
SKILL

Fast, flexible, and open tooling for building intelligent workflows with Cypress.

Developer Tooling#agent-skills#ai
252
Xopoko

build-swift-apps

Xopoko
SKILL

Multi-agent skills for building, debugging, profiling, testing, and shipping Swift apps across Apple platforms

Developer Tooling#agent-skills#appkit
222Python
ai-debugger-inc

aidb

ai-debugger-inc
MCP + SKILL

A language-agnostic debugging interface for AI agents.

Developer Tooling#ai#ai-agents
182Python
bodhiye

ui-testing

bodhiye
MCP

UI Testing 是基于 Chrome DevTools MCP 构建的 UI 自动化测试 Skill,无需编写测试脚本,仅需输入 URL 即可自动完成页面遍历、E2E 用例梳理、测试执行与标准化报告输出。核心依托 MCP 直连浏览器会话,复用本地已登录 Chrome 环境,通过 Playbook 沉淀用例并实现经验自进化,让 UI 自动化测试零脚本、高复用、易扩展。

Developer Tooling#mcp#skills
174JavaScript
petrkindlmann

qa-skills

petrkindlmann
SKILL

42 QA and test-automation skills for Claude Code, Codex, Cursor, and any Agent Skills Standard runtime.

Developer Tooling#agent-skills#agentskills
132HTML
runkids

mdproof

runkids
SKILL

🧪 Turn Markdown docs and runbooks into executable tests

Developer Tooling#ai-agents#cli
130Go
RazvanGolan

Kaya

RazvanGolan
MCP

Interactive real-time debugging and testing for .NET APIs, SignalR hubs, and gRPC services in .NET, plus an MCP server for AI-hosted invocation workflows, delivered as a suite of NuGet packages.

Developer Tooling#agent#agent-debugger
111C#
burhankhatri

e2e-testing

burhankhatri
SKILL

A set of 8 global skills for Claude Code that enforce disciplined, test-driven agentic development. Install once, use in any project.

Developer Tooling#claude-code#claude-skills
110Shell
qinghaoliqaq

AutoCoder

qinghaoliqaq
SKILL

An AI-powered desktop coding workspace for planning, coding, debugging, review, and testing through multi-agent orchestration and shared blackboards.

Developer Tooling#agent#ai
104Rust
Hyperyond

Hover

Hyperyond
MCP + SKILL

Local-first, open-source AI testing for the web. The widget rides on the coding-agent CLI you already have (Claude Code / OpenAI Codex — no API key) to drive your real Chrome via Playwright MCP. Clean runs crystallize into plain @playwright/test specs that run in CI with zero AI. 🛡️ Security mode for IDOR / authz prob

Developer Tooling#agent#ai
101TypeScript
liuzeming-yuxi

SuperClaw

liuzeming-yuxi
SKILL

SuperClaw is a harness-engineering project that connects OpenClaw (an AI assistant platform) with Claude Code to form a two-layer autonomous coding agent. The human sets direction, OpenClaw handles alignment and acceptance testing, and Claude Code handles execution. Built on top of Superpowers.

Developer Tooling
90Shell