Best MCP AI Skills & MCP Servers

XLUXX Trust Layer MCP Server — 16 tools for runtime trust scoring of 15,000+ MCP servers, Resonance Engine analysis, and Context Gate integrity checks. Installable in Claude Desktop, Cursor, and any MCP-compatible host.

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

MCP server that gives Claude Desktop full access to your email through Mozilla Thunderbird. 12 high-level tools: search, read, compose, reply, attachments, folders.

Low-level CLI to manage Mozilla Thunderbird email from the shell. 38 commands for search, read, compose, reply, attachments, folders, bulk ops. Designed for AI agents.

MCP server + CLI for the Unified Product Graph — drop into Claude Code or use the `upg` command.

MCP server for per-agent cost attribution, budget management, and spend analytics across AI agent fleets

Model Context Protocol (MCP) server for the A2A (Agent2Agent) protocol compliance test kit. Lets Claude Desktop, Cursor, Codex, and other MCP clients invoke run_compliance / validate_agent_card / list_checks / explain_check / ssrf_check_url as native tool

MCP server for gemini (coming soon)

MCP server for Astro ASO (App Store Optimization) data - Access keyword rankings, historical data, and app metrics

GitLab MCP server for projects, merge requests, issues, pipelines, wiki, releases, and more

MCP server for FaithFinder church discovery — lets external LLMs recommend churches, faith-based community events, and volunteer opportunities to users looking to connect with a faith community.

MCP server that gives merchandising agents eyes on any storefront — scrape, audit, compare, roundtable analysis, and eval tracking via 11 tools.

Token-efficient recursive thinking MCP server for AI agents. Achieve production-ready solutions through iterative refinement with 70% token reduction. Perfect for Claude, AI problem-solving, and complex task automation.

MCP server to automate DSers product import from AliExpress/Alibaba/Accio to Shopify & Wix

MCP server for AI agent trading — 275+ perpetual markets including TSLA, NVDA, GOLD, SILVER via Hyperliquid HIP-3. Stocks, commodities, crypto, forex. By Purple Flea.

MCP server for DNS lookups, reverse DNS, WHOIS, and domain checks — zero auth, zero config

Supabase runtime adapter for MCP servers built with ModelFetch

Codebase graph analysis for AI agents — AST + call graph + type graph + hybrid semantic search via MCP

AINative ZeroDB MCP Server - 77 operations for vector search, quantum compression, NoSQL, dedicated PostgreSQL management, files, events, RLHF, and persistent memory for AI agents with enterprise security. All tools annotated with readOnly/destructive/ide

MCP stdio server for HrClaw Market - enables OpenClaw agents to browse agents, skills, and tasks

MCP server for scholarly works, authors, and institutions via OpenAlex API

Agent Output Guard MCP Server - Validate and verify data from other agents before acting on it. Zero LLM costs, pure computation. Solves coordination failures in multi-agent systems.

MCP server for discovering and converting Claude skills

Enterprise-grade MCP server providing heavily optimized FTP/SFTP operations with smart sync, patch/chunk streaming, caching, and explicit read-only security mappings for AI code assistants.