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
2.5kAll domains

LLM & GenAI Engineering

2.5k

LLM apps, prompts, RAG, embeddings, model gateways, inference utilities.

Specializations

AllGeneral6.9k reposRAG & Retrieval5.5k reposPrompts & Prompt Eng.2.5k reposGateways & Routers943 reposChatbots & Assistants821 reposInference & Serving582 reposEvaluation & Guardrails292 reposEmbeddings & Vectors266 reposFine-tuning34 repos
0specializations
0repos
0skills
0MCP servers
0agents
JuliusBrussee

caveman

JuliusBrussee
SKILL

🪨 why use many token when few token do trick — Claude Code skill that cuts 65% of tokens by talking like caveman

LLM & GenAI Engineering#ai#anthropic
66.3k3.7kJavaScript
asgeirtj

system_prompts_leaks

asgeirtj
SKILL

Extracted system prompts from Anthropic - Claude Code, Claude Design, Opus 4.8, Sonnet 4.6. OpenAI - ChatGPT 5.5 Thinking, GPT 5.5 Instant, Codex, Google - Gemini - 3.5 Flash, 3.1 Pro, Antigravity, xAI - Grok, Cursor, Copilot, VS Code, Perplexity, and more. Updated regularly.

LLM & GenAI Engineering#ai#anthropic
41.2k6.8kJavaScript
langfuse

langfuse

langfuse
SKILL

🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

LLM & GenAI Engineering#analytics#autogen
28.5k2.9kTypeScript
Imbad0202

academic-research-skills

Imbad0202
SKILL

Academic Research Skills for Claude Code: research → write → review → revise → finalize

LLM & GenAI Engineering#academic-pipeline#academic-writing
27.2k2.2kPython
chopratejas

headroom

chopratejas
MCP

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 60-95% fewer tokens, same answers. Library, proxy, MCP server.

LLM & GenAI Engineering#agent#ai
11.8k770Python
Arize-ai

phoenix

Arize-ai
SKILL

AI Observability & Evaluation

LLM & GenAI Engineering#agents#ai-monitoring
10.0k906Python
nidhinjs

prompt-master

nidhinjs
SKILL

A Claude skill that writes the accurate prompts for any AI tool. Zero tokens or credits wasted. Full context and memory retention

LLM & GenAI Engineering#claude-ai#claude-skills
9.1k1.1k
Zipstack

unstract

Zipstack
SKILL

LLM-Driven Extraction of Unstructured Data — Built for API Deployments & ETL Pipeline Workflows

LLM & GenAI Engineering#ai-agents#data-engineering
6.6k630Python
UfoMiao

zcf

UfoMiao
MCP + SKILL

Zero-Config Code Flow for Claude code & Codex

LLM & GenAI Engineering#agent#ai
6.0k423TypeScript
fengshao1227

ccg-workflow

fengshao1227
SKILL

多模型协作工作流引擎 — /ccg:go 一个命令,AI 自动分析意图、选择策略、编排 Codex + Gemini + Claude 协作执行

LLM & GenAI Engineering#agent-teams#ai
5.4k419Go
FlorianBruniaux

claude-code-ultimate-guide

FlorianBruniaux
MCP + SKILL

A tremendous feat of documentation, this guide covers Claude Code from beginner to power user, with production-ready templates for Claude Code features, guides on agentic workflows, and a lot of great learning materials, including quizzes and a handy "cheatsheet". Whether it's the "ultimate" guide to Claude Code will b

LLM & GenAI Engineering#agentic-coding#ai-assistant
5.0k660Python
53AI

53AIHub

53AI
MCP

53AI Hub is an open-source AI portal, which enables you to quickly build a operational-level AI portal to launch and operate AI agents, prompts, and AI tools. It supports seamless integration with development platforms like Coze, Dify, FastGPT, RAGFlow.

LLM & GenAI Engineering#coze#dify
4.9k524Go
Kiln-AI

Kiln

Kiln-AI
MCP + SKILL

Build, Evaluate, and Optimize AI Systems. Includes evals, RAG, agents, fine-tuning, synthetic data generation, dataset management, MCP, and more.

LLM & GenAI Engineering#ai#chain-of-thought
4.9k368Python
remotion-dev

skills

remotion-dev
SKILL

Agent Skills

LLM & GenAI Engineering
3.4k385TypeScript
langwatch

langwatch

langwatch
SKILL

The platform for LLM evaluations and AI agent testing

LLM & GenAI Engineering#ai#analytics
3.3k320TypeScript
wuyoscar

GPT-Image2-Skill

wuyoscar
SKILL

GPT Image 2 prompt gallery, image prompt library, agentic skill, and CLI for OpenAI image generation/editing

LLM & GenAI Engineering#agent-skills#ai-image-prompts
2.9k260Python
0x0funky

agent-sprite-forge

0x0funky
SKILL

Agent Skill for generating 2D sprite sheets and map, transparent PNG frames, and animated GIFs from prompts.

LLM & GenAI Engineering#agent-skills#codex
2.4k246Python
KhazP

vibe-coding-prompt-template

KhazP
SKILL

Templates and workflow for generating PRDs, Tech Designs, and MVP and more using LLMs for AI IDEs

LLM & GenAI Engineering#ai-agents#ai-workflow
2.4k304
wuyoscar

gpt_image_2_skill

wuyoscar
SKILL

GPT Image 2 prompt gallery, image prompt library, agentic skill, and CLI for OpenAI image generation/editing

LLM & GenAI Engineering#agent-skills#ai-image-prompts
2.2k211Python
glittercowboy

taches-cc-resources

glittercowboy
SKILL

A collection of my favorite custom Claude Code resources to make life easier.

LLM & GenAI Engineering#anthropic#claude
1.9k408TypeScript
wesammustafa

Claude-Code-Everything-You-Need-to-Know

wesammustafa
SKILL

The ultimate all-in-one guide to mastering Claude Code. From setup, prompt engineering, commands, hooks, workflows, automation, and integrations, to MCP servers, tools, and the BMAD method—packed with

LLM & GenAI Engineering
1.9k214Python
Th0rgal

open-ralph-wiggum

Th0rgal
SKILL

Type `ralph "prompt"` to start open code in a ralph loop. Also supports a prompt file & status check. Open Code, Claude Code, Codex, Copilot

LLM & GenAI Engineering#claude-code#open-code
1.8k137TypeScript
phuryn

claude-usage

phuryn
SKILL

A local dashboard for tracking your Claude Code token usage, costs, and session history. Pro and Max subscribers get a progress bar. This gives you the full picture.

LLM & GenAI Engineering#claude-code
1.7k324Python
conorbronsdon

avoid-ai-writing

conorbronsdon
SKILL

Skill that audits and rewrites content to remove AI writing patterns. Use it with your favorite agents including Claude Code, OpenClaw, and Hermes.

LLM & GenAI Engineering#ai-writing#claude
1.7k171JavaScript