Best Claude AI Skills & MCP Servers

CLI for Xenarch — non-custodial x402 MCP server for AI agents. Claude, Cursor, LangChain and CrewAI pay HTTP 402–gated APIs with USDC on Base L2.

A2ABench MCP server for public agent Q&A benchmarking: list questions, submit runs, and fetch leaderboard scores.

MCP server for Ruby — structured gem, bundler, and script output for AI agents

MCP server for JVM — structured Gradle and Maven build, test, and dependency data for AI agents

MCP server for build tools — structured TypeScript, esbuild, vite, and webpack output for AI agents

PR Worlds — the CLI and MCP server that gives your repo coherent, reproducible worlds your agent can open, replay, and inhabit. v0.2 ships the coherence resolver: agents see the plan's confidence, evidence, and explicit unknowns before the world is materi

An open-source MCP server for Answer Engine Optimization (AEO) monitoring.

Compile your Markdown vault into a portable agent memory. One build, every agent: Claude, Codex, Cursor, MCP, llms.txt.

Context governor and between-commit activity surface for coding agents

MCP Server para la API products-payment-refacil

MCP server for Gandi LiveDNS — manage DNS records, domains, and zone snapshots from Claude Code or any MCP client.

MCP server for ng-annotate-mcp — exposes Angular browser annotations as MCP tools for AI agents

AI code impact analysis MCP server — dependency graphs, cascade detection, and a mandatory build gate for AI coding agents

Queen Claude MCP server - streamlined with 14 essential tools for Next.js development

MCP server for Formulon Excel-compatible formula and workbook evaluation

AI-native MCP server for business management — invoices, expenses, deposits, clients, products, quotes, webhooks, CRM. 62 tools. Remote endpoint at mcp.frihet.io (zero install). Works with Claude, Cursor, Windsurf, Cline.

Cross-Code Organizer (CCO, formerly Claude Code Organizer) — manage AI coding tool configs across Claude Code, Codex CLI, and more. Memories, skills, MCP servers, commands, agents, rules, and hooks across global and project scopes

AI-powered idea & task manager for developers. Brainstorm → structured tasks → AI agent execution. CodeMirror editor with slash commands, MCP Server, Claude/Gemini/Codex support. Local-first SQLite, cross-PC Git sync.

iMessage MCP server — 25 tools for searching, analyzing, and exploring your entire iMessage history on macOS

MCP server for Deno — structured run, test, lint, and fmt output for AI agents

MCP server for Swift — structured build, test, and package manager data for AI agents

ido4 MCP server — context intelligence, task distribution, and governance for AI-hybrid software development in Claude Code

High-performance WebAssembly theorem prover with dependent types, hash-consing (150x faster), Ed25519 proof signatures, MCP support for Claude Code, AgentDB vector search, episodic memory, and ReasoningBank learning. Formal verification with cryptographic

MCP server for Bun — structured run, test, build, and package data for AI agents