Best AI Agent AI Skills & MCP Servers

Look up countries, timezones, periodic table elements, physical constants, units, HTTP status codes, and MIME types via MCP. STDIO or Streamable HTTP.

MCP Server for Spec-Driven Development - Create and manage SDD test specifications with tasks, logs, and acceptance criteria

MCP server for security scanning — structured Trivy, Semgrep, and Gitleaks findings for AI agents

Copilot Toolkit - Native AI Agents & Skills for GitHub Copilot (v2026)

An Open, Structured, and Standard Registry for MCP Servers and Packages.

MCP web extraction for Claude, Cursor, and agents: no-key demo plus live URL-to-JSON extraction with Haunt API

Agentic HubSpot CLI + MCP server. Covers ~all documented public endpoints (1180 across 55+ command domains). Reachability is tier/scope/auth-model gated — UI-only surfaces and deprecated APIs excluded. Enterprise safety rails, self-hosted.

MCP server that gives AI agents (Claude, Cursor, Copilot) deep understanding of your codebase patterns, conventions, and architecture. Query patterns, security boundaries, call graphs in real-time.

MCP server for searching and discovering AI agents, MCP servers, CLI tools and agent skills via A2ASearch

22 x402 pay-per-call utility tools for AI agents — scrape, validate, embed, store, moderate, notify, convert, prevent loops. No accounts, no API keys. USDC on Base via the x402 protocol.

Model Context Protocol (MCP) server for fal.ai model discovery, execution, and ephemeral local workspaces.

Send, manage, and replay ntfy push notifications via MCP. STDIO or Streamable HTTP.

MCP server for GitHub — structured PR, issue, and Actions data for AI agents

Local web Studio for testing natural-language-to-JSON workflows with JSON Contracts.

Security scanner for AI agent tools. Local static scan of MCP IDE configs (41 rules, toxic flow heuristics, AAuth visibility, auto-fix, tool pinning). Optional proxy + in-browser dashboard: traffic, findings, AAuth Explorer, YARA, Playground. Smart Scan o

Sayba Skill Market MCP Server — Discover, invoke, publish, and rate AI Agent skills on Sayba

Appraisily MCP server for appraisal preparation, public sample reports, safe start links, and credential-gated Pro Screener workflows.

Production-ready AI agent orchestration platform with 66 specialized agents, 213 MCP tools, ReasoningBank learning memory, quantum-resistant Jujutsu VCS, and autonomous multi-agent swarms. Built by @ruvnet with Claude Agent SDK, neural networks, memory pe

Human-like memory for self-improving AI agents. Automatic capturing, nightly reflection, and cross-agent learning. Works with Claude Code and OpenClaw.

Shared TypeScript types and x402 payment-flow utilities for @xenarch/agent-mcp — Xenarch's non-custodial x402 MCP server.

Security co-pilot for AI agents. Scan for vulnerabilities, verify governance, audit MCP servers, and generate compliance reports — all from Claude, Cursor, or any MCP client.

MCP security trust layer. Scan packages, inspect repo MCP dependencies, generate Policy Gate setup, check exposure, and query abuse data.

MCP server adapter + CLI + watcher for email-agent-mcp

Local-first web intelligence MCP server for AI coding agents