Best LLM AI Skills & MCP Servers

Gmail MCP server — scope-gated tools + attachment/download path jails + supply-chain hardening. Fork of GongRzhe/Gmail-MCP-Server via ArtyMcLabin's intermediate fork.

NestJS MCP Server - Build Model Context Protocol servers with NestJS

MCP control plane for local cognitive labor — job-shaped tools with tiered Ollama models (instant/workhorse/deep/embed), server-enforced guardrails, and measured economics so Claude can delegate bulk work without losing control.

A proxy tool that converts normal MCP servers to use lazy-loading pattern with three/four meta-tools

Security scanner MCP server for AI coding agents. Prompt injection firewall, package hallucination detection (4.3M+ packages), 1700+ vulnerability rules with AST & taint analysis, LLM-powered semantic code review, auto-fix. For Claude Code, Cursor, Windsu

MCP server that builds code graphs to provide rich context to LLMs

An MCP (Model Context Protocol) server enabling LLMs and AI agents to interact with Git repositories. Provides tools for comprehensive Git operations including clone, commit, branch, diff, log, status, push, pull, merge, rebase, worktree, tag management,

Antigravity-CLI Plugin. 309 community agent skills aggregated from 13 popular open-source repositories, one-command install.

RushDB MCP Server - Model Context Protocol server for RushDB

Tuning Engines CLI, MCP server, and Python agent runtime adapters for governed model, agent, skill, and MCP workflows. Fine-tune open-source LLMs, run inference, manage datasets/evaluations, and connect LangGraph or Temporal while Tuning Engines handles p

Multi-model AI code review server using OpenRouter - get diverse perspectives from multiple LLMs in parallel

Declarative MCP Server Engine — define tools, resources, and prompts in vurb.yaml. The docker-compose for MCP servers.

Model Context Protocol server for BullMQ job queue management

MCP server providing financial market data from finmap.org

MCP server for Decantr — exposes Contract context, typed graph artifacts, and verification evidence to AI coding assistants

Native TypeScript AI memory system and MCP server (Zero-LLM, LanceDB)

MCP server + live dashboard for AI code governance — OWASP LLM Top 10 (10/10), real-time MCP App UI, 25+ security patterns, Bayesian learning Brain, hallucinated import detection, multi-agent governance. Works with Claude, Cursor, VS Code, ChatGPT, Goose,

A Model Context Protocol server for MongoDB connections

Unified MCP server for multi-LLM consultation — registers tools from all available providers (Gemini, Codex, Ollama) behind runtime availability checks

Reduce Claude Code token usage by 70-90% with cross-session memory and four-layer optimization: semantic codebase indexing, PostToolUse tool compression, turn summarization, and session consolidation. MCP server powered by Ollama — zero API calls, runs en

Real-time web intelligence for AI agents. 21 tools, no required API keys. Every result timestamped with a freshness score.

Model Context Protocol (MCP) server for the Pollinations APIs with image saving functionality.

MCP server for local Ollama LLM integration - for Claude IDE and other IDEs

Node.js/TypeScript MCP server for Atlassian Bitbucket. Enables AI systems (LLMs) to interact with workspaces, repositories, and pull requests via tools (list, get, comment, search). Connects AI directly to version control workflows through the standard MC