MCP server giving LLMs the ability to design, simulate, and analyze SPICE circuits via LTSpice and NGspice

Claude Code skill that translates plain-English sound descriptions into working Web Audio API and Tone.js code

Production Claude Code skills for n8n from a Verified Creator's 100+ workflows

Stop agents from designing sloppy UI. Inspired by Impeccable, but without the plugin machinery. Just one SKILL.md file.

OmO: Just type "mass ulw" keyword with your prompt. Now you are the master of graph engineering.

Build tested agent skills and govern their lifecycle through a user-defined marketplace: evidence, discovery, updates, rollback, quarantine, and 17-platform distribution.

1 place to call all your agents - OpenCode, Hermes, Claude Managed Agents, Cursor Agents API, DeepAgents.

The Simulink Agentic Toolkit gives your AI agent both the tools and the expertise to work effectively with Simulink and Model-Based Design.

Fixes prompt cache regression in Claude Code that causes up to 20x cost increase on resumed sessions

An MCP Server for Chrome DevTools, following the Chrome DevTools Protocol. Integrates with Claude Desktop and Claude Code.

QA Skills Directory QA Skills is a curated directory of testing-specific skills for AI coding agents (Claude Code, Cursor, Copilot, etc.).

Context engine for large codebases, exposed through MCP. Gives AI coding agents precise repository context; benchmarked at frontier-agent quality with ~25x lower model cost and 45% fewer tokens with semantic search.

Claude Code skill that scans a codebase and generates a self-contained HTML service-design journey map (NN/g combined customer journey + service blueprint)

Two-mode MCP music studio: scored composition (ABC notation) and live performance (Strudel). Interactive ext-apps UI with sheet music rendering, 30+ instruments, style presets, and live coding REPL.

Multi-agent codebase review for PRs, CI, and downstream fork syncs.

Agent skills for daily use

A blazing fast AI Gateway with integrated guardrails. Route to 1,600+ LLMs, 50+ AI Guardrails with 1 fast & friendly API.

Open-source AI assistant ecosystem with MCP integrations, multimodal workflows, IoT support, and cross-platform voice interaction.

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

Run a task with AI as a flow of steps you keep, reuse, and refine, not a one-off chat.

🌋 Build AI agents that seamlessly combine LLM reasoning with real-world actions via MCP tools — in just a few lines of TypeScript.

Master OpenCode, the open-source AI coding agent — setup, agents, skills, plugins, MCP, Zen & headless CI.

A plugin-based gateway that orchestrates other MCPs and allows developers to build upon it enterprise-grade agents.

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