AI Skills, Agents & MCP

24 self-contained Claude Code skills, each distilled from one real engineering failure, with sanitised case studies and pre-flight checklists.

Web directory that indexes Claude Code plugin marketplaces themselves, so you can discover sources rather than individual plugins.

MCP server providing Rhino and Grasshopper automation so agents can build parametric 3D geometry.

MCP server from 21st.dev that generates production-ready React UI components from natural language descriptions.

Open-source visual editor that lets you style and edit a running React app directly and writes the code changes back.

tldraw project that turns a hand-drawn interface sketch on a canvas into working HTML you can iterate on.

Image prompt library packaged as an agent skill so a coding agent can pick and adapt prompts across models.

Ten-thousand-plus curated image prompts with preview renders and multilingual variants, aimed at Gemini image generation.

Hosted MCP endpoint that feeds shadcn/ui component and design-system context into Cursor, Claude Code and Windsurf.

Visual whiteboard that lets you annotate screenshots and feed the marked-up feedback straight back into the coding agent.

Open-sourced skill set behind ClaudeKit covering research, planning, shipping and repo hygiene for Claude Code projects.

MCP server that converts Figma files into simplified layout JSON so coding agents generate accurate markup from designs.

Skills that produce editorial-quality diagrams in HTML and SVG with deliberate typography and layout decisions.

The largest curated index of Claude Code resources: guides, skills, statuslines, hooks, clients, security tools and CLAUDE.md files.

Skill that attaches an agent to a real Chrome instance over CDP and adds a perception layer over the page.

MCP server that answers design-system questions about components, tokens, patterns and best practice from a curated corpus.

Official MCP server for Penpot enabling bidirectional design workflows against an open-source design tool.

MCP server exposing fifty-plus Photoshop automation tools for layers, filters, selections, text and export.

Design-engineering skill that critiques UI work against a scoreable rubric before and after implementation.

TypeScript starter for MCP servers with example tools, resources, prompts, multi-client install scripts and npm publish workflows.

Curated and tested ComfyUI workflows for image, video and voice generation with documented node graphs.

Official MCP server exposing the Magic UI animated component registry so agents install real components instead of inventing them.

Lightweight meta-prompting system for Claude Code that structures work into planning and execution passes without heavy scaffolding.

MCP server with a WebSocket bridge that lets an agent create and modify Figma elements from natural language.

Curated system-prompt collection framed as a builder's reference for people designing their own agents.

MCP server and CLI that injects current, version-specific library documentation and code examples into an agent's prompt.

Configuration framework adding thirty slash commands, twenty specialist agents, seven behavioural modes and eight MCP integrations to Claude Code.

Tool that converts existing Express or FastAPI applications into MCP servers without rewriting the API surface.

Real-time guardrails that detect and block secret leakage in agent output and tool calls.

Native macOS app for assembling code context into prompts, with file trees, diffs and an MCP server agents can call.

Claude Code plugin that converts raw terminal output and logs into styled, readable HTML explanations.

Fourteen-hundred image prompts scraped from X and ranked by engagement, portable across NanoBanana, Midjourney and GPT Image.

MCP server that translates design tokens between Tailwind, Figma, CSS variables, Material 3 and SwiftUI.

Curated system prompts and tool definitions harvested specifically from production AI coding agents.

Archive of extracted system prompts from ChatGPT, Claude, Grok, Gemini, Manus, v0, Lovable and Cursor.

Hook that intercepts destructive shell commands before an autonomous agent executes them.

Community-maintained list of plugins extending Claude Code with commands, agents, hooks and MCP servers.

Planning layer that lets several coding agents share specs, tasks and decision history inside one workspace before they write code.

MCP server bringing shadcn-vue and Tailwind component generation to Vue developers via an agent.

Official Expo skill pack teaching agents how to scaffold, build and debug Expo and React Native applications correctly.

Large transparency archive of system prompts across ChatGPT, Claude, Gemini, Grok, Perplexity, Cursor, Lovable and Replit.

Production-oriented Claude Code skill marketplace repo with installable skills for day-to-day development workflows.

Metaphor-driven product naming skill that runs structured divergence and convergence rather than dumping a word list.

Security-engineering skills that drive CodeQL and Semgrep static analysis from an agent, written by a real appsec firm.

Template teaching the PRP workflow — global rules, feature specs, example patterns and /generate-prp and /execute-prp commands.

Anthropic's official skill repo: docx, pptx, xlsx, pdf, canvas-design, algorithmic-art, mcp-builder, webapp-testing and skill-creator.

Opinionated cursor rules repo that also ships a maintained AGENTS.md translation of the same rule set.

Tool that crawls a documentation website and compiles it into a packaged Claude Skill with references and examples.

Anthropic's curated directory of vetted Claude Code plugins, used as the default marketplace source.

Workspace of databases, kanban boards, pages and calendars that Claude, Cursor and other agents read and write over MCP.

Browser automation harness that lets a coding agent open, drive and visually verify the app it just wrote.

Statusline that streams live World Cup football scores into your Claude Code terminal.

MCP server with fifty-seven FreeCAD tools and headless Docker execution for automated CAD generation.

Regularly updated extractions of Anthropic, OpenAI, Google and xAI system prompts including Claude Code and Codex.

Thinking-framework skills with a meta-router that picks the right reasoning approach for the problem at hand.

MCP server pairing Playwright with full Chrome DevTools access for autonomous debugging, performance and security inspection.

Playground repository with runnable side-by-side implementations comparing modern open-source agent frameworks on the same example tasks.

Bridge that lets coding agents drive arbitrary desktop software beyond the terminal and browser.

Slash-command system that interrogates your codebase, asks two rounds of yes/no questions, then writes a concrete requirements document.

Project template that adds pre-commit hooks, CI, linting, type checks, file-length limits and test-drift inventories to LLM-assisted work.

Skill that teaches Claude to build correct, idiomatic d3.js data visualisations instead of generic charting library output.

MCP server that drives Google NotebookLM so agents can query and build notebooks programmatically.

Curated list of Claude Code slash commands, subagents, MCP servers and hooks packaged as installable plugins.

Advanced .mdc rules for Cursor covering agent memory management and multi-step development workflows.

Microsoft's MCP server that drives Playwright using the accessibility tree rather than screenshots for deterministic browser control.

Modular real-world ComfyUI workflows organised by task, built to be composed rather than used monolithically.

Sprawling toolkit bundling agents, skills, commands, plugins, hooks, rules, templates and MCP configs in one repo.

Battle-tested Claude Code skill library covering brainstorming, TDD, debugging and code review, installed as a plugin marketplace.

Statusline showing live rate-limit consumption, token spend and cost so you can see budget burn in real time.

Experimental staging repo where new agent-skill techniques get prototyped in public before graduating into the main superpowers library.

Skill that generates favicons, app icons, OG images and social media assets from a single source graphic.

Highly customisable Claude Code statusline with powerline rendering, themes and configurable widgets.

All parts of the Claude Code system prompt, versioned and updated on each release for diffing.

Reference project demonstrating every Claude Code hook event with runnable example implementations and explanations.

Alternative curated list of Claude Skills, resources and tooling maintained by the Composio team with workflow-oriented grouping.

Large collection of .cursorrules and .mdc rule files organised by framework and language for Cursor and Windsurf.

Web and mobile progressive web app for driving Claude Code sessions remotely from a phone or browser.

Ready-to-use scientific computing skills spanning data analysis, bioinformatics and research pipelines for Claude agents.

Drop-in CLAUDE.md distilling Karpathy-style coding guidelines into behavioural rules for coding agents.

CLI that runs coding agents inside hardware-isolated virtual machines for safe autonomous operation.

Curated real-world AGENTS.md files, templates, guides and tooling for Codex-style and cross-vendor agents.

Claude Code skill bundle for modern web work, specialising in 3D graphics, animation and interactive web experiences.

Reference site documenting one hundred and ninety-plus patterns for building and operating coding agents.

Browsable web directory of Claude Skills and plugins with search and install instructions, rather than a flat markdown list.

Reference library of hook-based skill activation, modular skills, ten specialist agents and documentation patterns that survive context resets.

Starter kit of commands for priming context, reviewing work, syncing docs and blocking secrets across Claude Code sessions.

Fifty-plus motion graphics and animation skills for agents, covering easing, timelines, transitions and video-style sequences.

Machine-generated .mdc rule files derived from library documentation, one rule set per package.

Chrome automation MCP combining Playwright and CDP with network interception, HAR record and replay, and accessibility testing.

Collection of system prompts and full tool definitions from Augment, Claude Code, Cursor, Devin, Kiro and VSCode Agent.

Converts Claude Code session transcripts into an interactive HTML replay you can scrub and share.

Skill with a detection engine that strips AI-isms, filler transitions and hedging from generated prose.

Automatically refreshed daily index of MCP servers, clients and frameworks with activity signals baked in.

Focused collection of Claude Code plugins bundling specialised agents, skills and slash commands for development workflows.

Curated index of official and community Claude Skills with per-entry notes, plus authoring tools and marketplaces for skills.

Catalogue of agentic workflow patterns documented with Mermaid diagrams and implementation notes.

Curated index of AI agent frameworks, platforms and protocols with categorisation by use case.

Statusline that reacts to what the agent is doing with kaomoji expressions and mood states.

Curated collection of Claude Code hooks for event-driven automation across the agent lifecycle.

Walkthrough of the Ralph technique: running a coding agent in a repeating loop against a spec until every item is finished.

Long-running curated index of MCP servers organised by domain, widely mirrored across the ecosystem.

Plugin that turns CSS selectors into generated visual documentation of a component's states and variants.

Community gallery of Claude Code status lines where every card preview is rendered from the real script before you copy it.

Browsable catalogue of Claude Code plugins and marketplace collections with install commands and categorisation.

Official shadcn skills giving agents accurate component context and enforcing shadcn conventions during generation.

Agent design skill with research, moodboard, tokens, register dials, and a slop linter so UI stops looking generic.

Bridges Claude Design into Cursor, Codex, and other agents so designs sync from real components and tokens both ways.

Agentic loop where coding agents draw in p5.js, then refine via adversarial visual review — skills for Claude Code and Codex.

Open-source runtime guardrails that allow, warn, or block every LLM and MCP tool call before it commits, with a hash-chained audit trail.

MCP server and CLI that makes deterministic tools judge every AI claim against ground truth, with evidence and session rollover that keeps facts intact.

Local Rust daemon that schedules agent loops (Claude, Codex, Hermes, Pi) with REST, MCP, and a web UI — no cloud queue required.

Claude/Codex skill that turns place and culture photos into art-directed Chinese editorial posters with composition, type, and reference gates.

Agent OS for Blender 5.2: skills, verified bpy knowledge, AGENT_OK/FAIL contract, and a production gate for 3D-printable parts.

Rust SRE agent harness that investigates production incidents with scoped workers, disk-backed context, and human-gated remediations.

Self-hostable personal context MCP: one endpoint for accounts, memory, skills, vault, and audit that every agent you authorize can share.

Claude Code org chart of 16 independently installable departments and 172 skills, addressed as department:skill so names never collide.

Agent skills from Brad Frost covering design-system inspection, product health, DS adoption plans, and enforceable AI-usage limits.

Pair of agent skills that build a slide deck from a repository, citing exact file line ranges and hashes so a script can flag slides that drifted.

Source-linked archive of documented incidents where AI coding agents and chatbots deleted data, leaked secrets or burned money, each with the lesson.

Claude Skill that searches for existing open-source solutions before your agent writes code, vetting license, maintenance and dependency CVEs.

Claude Code skill for long-form generative art: hash-seeded PRNGs, trait and rarity tables, plus scripts that render contact sheets and check determinism.

Claude Code skill that builds scroll-driven sites using eight mutually exclusive page grammars, then screenshots its own scroll to grade contrast and dead scroll.

Agent skill that generates images by rendering HTML/CSS instead of calling an image model, with 32 named styles and zero-dependency PNG export.

Local-only MCP server plus Svelte Flow viewer for planning system architecture as a typed, linted diagram before any code is written.

Keyless MCP server exposing 42 tools over Overture Maps open data: place search, geocoding, routing, isochrones and area comparisons.

Rust binary giving agents web fetch, search and crawl plus scanned-PDF OCR as MCP tools, with no API keys or accounts.

Claude Code skill pack that rewrites agent output as plain-language reports, straight yes/no verdicts on completion, and numbered steps you can follow.

Claude Code skill that reads your local session logs to explain where tokens went, why you hit a limit, and what to change.

Paste a public GitHub repo of SKILL.md files and get a stable streamable-HTTP MCP URL for Claude Code, Cursor or Codex.

Agent skill packaging 18 production CSS transitions plus commands to audit a project for hardcoded durations and swap them for motion tokens.

MCP server giving agents six design-lookup tools: UI inspiration galleries, component code, shaders and motion, plus scraping a site's type and palette.

Two-skill agent library: shader-driven WebGL UI components with real fallbacks, and Tailwind container queries used in place of viewport breakpoints.

Local MCP server driving your real logged-in Chrome so agents can read and act on login-gated pages across X, Reddit, Zhihu, Xiaohongshu and Bilibili.

Agent-driven design canvas running beside Cursor, VS Code, Claude Code or Codex, storing designs in an open format that lives inside your repo.

Append-only SQLite store of typed facts for agents, exposed over MCP, returning a freshness and assurance verdict on every recalled belief.

Desktop IDE running Claude Code, Codex, OpenCode, Cursor and Grok in parallel, each task isolated in its own git worktree.

MCP server giving agents persistent memory as Open Knowledge Format markdown files on disk, indexed in SQLite FTS5 for fast lookups.

Native macOS app built in Rust and GPUI that drives Claude Code, Codex, Cursor, OpenCode and Grok CLIs in one local timeline.

macOS app that floats a strip of eight virtual LEDs beside the Dock, signalling whether coding agents are working, waiting, finished or broken.

Emacs shell for chatting with any ACP-driven agent — Gemini CLI, Claude Agent, Auggie, Mistral Vibe — inside a native buffer.

Local read-only dashboard for token usage and reported cost across OpenCode, Claude Code, Codex and Cursor sessions, with per-call cache-miss drilldown.

Go deep-research CLI and MCP server with a hard spend ceiling, quote-verified claims, and local CSV analysis that never sends rows to the model.

Agent skill that turns one concept into a sparse abstract poster using precise geometry, matte fields and a single spatial event.

LLM-friendly JSON design language with a validation core and a Figma adapter that turns the JSON into editable native Figma frames.

Library of DESIGN.md files capturing real brand design systems — colour, type, spacing — in a format coding agents can read directly.

Local-first canvas where graph edges define the context sent to an LLM; branch, prune and merge nodes, then inspect the exact message sequence before sending.

Agent skill that encodes Material Design 3 decision rules — semantic tokens, component choice by behaviour, adaptive width classes, accessibility — with progressive-disclosure reference files.

Agent skill teaching motion design judgement — timing, easing, choreography and Disney's 12 principles adapted for UI — independent of any animation library.

Agent skill for picking CJK typefaces: licence-tiered commercial-safe font list, scene-by-mood selection matrix, and CJK–Latin pairing rules.

Claude Code skill encoding the ISO 24495-1 plain-language rules, rewriting text for reader outcomes in English and Traditional Chinese.

MCP server exposing a local markdown second brain to agents with search and structured retrieval.

Forty-six-plus documented Claude Code techniques plus status-line scripts, conversation utilities and a bundled developer-experience plugin.

Maintained index of seventy-five-plus high-quality Claude Code repositories with descriptions and categories.

Design-judgment skill that teaches an agent refined visual principles so its UI output stops defaulting to generic templates.

Desktop platform where specialised frontend, backend and database agents collaborate to generate full applications from a plain description.

Directory of Cursor plugins, MCP servers and framework rule files, ranked by what the community is installing.