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Best Ar AI Skills & MCP Servers

1,581 curated Ar skills and MCP servers — install any of them into Claude, Cursor, ChatGPT, n8n, or any AI stack with one command.

Sciverse

MCP Registry

Sciverse MCP server — exposes academic paper retrieval (search_papers / semantic_search / read_content) to MCP-compatible coding agents (Claude Code, Cursor, Codex CLI, Windsurf, ...).

MCP Registry · ★ 5.0free

Shared

MCP Registry

Shared utilities for cz-agents MCP servers — IČO/DIČ validation, HTTP helpers, rate limiter, billing primitives

MCP Registry · ★ 5.0free

Mcp

MCP Registry

BlockRun MCP Server - Give your AI agent web search, deep research, prediction markets, crypto data, X/Twitter intelligence. Paid via x402 micropayments.

MCP Registry · ★ 5.0free

Supacanvas

MCP Registry

The workspace for every dashboard, mockup, and diagram your AI tools build. Captured, searchable, exportable, yours forever. Works with Claude, Cursor, and any AI tool that speaks MCP.

MCP Registry · ★ 5.0free

Better Icons

MCP Registry

MCP server for searching and retrieving icons from 200+ icon libraries powered by Iconify

MCP Registry · ★ 5.0free

Strata

MCP Registry

Local memory layer for AI agents — coding assistants over MCP, game NPCs over REST

MCP Registry · ★ 5.0free

Scholar Sidekick

MCP Registry

MCP server for Scholar Sidekick — resolve any scholarly identifier (DOI, PMID, PMCID, ISBN, arXiv, ISSN, ADS, WHO IRIS) into 10,000+ CSL styles or nine export formats, single or batch, plus retraction (Crossref / Retraction Watch), open-access (Unpaywall)

MCP Registry · ★ 5.0free

Swisstrip

MCP Registry

Canonical MCP client by SwissTrip — connects AI assistants to Swiss Federal Railways (SBB/CFF/FFS) data: schedules, prices, and ticket links via SBB's SMAPI. Independent third-party MCP server.

MCP Registry · ★ 5.0free

Component Library

MCP Registry

MCP server for the Cooper Component Library. Provides component documentation, prop inspection, color palette info, and scaffolding tools for AI assistants.

MCP Registry · ★ 5.0free

Karea

MCP Registry

MCP server for Karea task management — use with Claude Code, Cursor, or any MCP-compatible client

MCP Registry · ★ 5.0free

Trace

MCP Registry

MCP server for atrib. Walks informed_by chains backward from a record_hash to surface the reasoning chain that produced it.

MCP Registry · ★ 5.0free

Ejentum

MCP Registry

MCP server with four cognitive harness tools (harness_reasoning, harness_code, harness_anti_deception, harness_memory) that AI agents call before generating. Two install paths: stdio via `npx -y ejentum-mcp` (Claude Desktop, Cursor, Windsurf, Codex CLI, C

MCP Registry · ★ 5.0free

Vibe Hnindex

MCP Registry

MCP server for indexing and searching codebases with keyword + semantic search. Works with Claude, Cursor, Windsurf, Antigravity.

MCP Registry · ★ 5.0free

Cinema4D

MCP Registry

TypeScript MCP server for Cinema 4D with generic entity CRUD, parameter-level access, undo-grouped batch ops, and security controls.

MCP Registry · ★ 5.0free

Payclaw

MCP Registry

PayClaw as an MCP server. Adds pay/balance/history tools to Claude Desktop, Cursor, Cline, and any MCP-compatible client. v0.2: true gasless via Circle Paymaster + Kernel smart accounts on Base — agents never need ETH. Wraps @grip-labs/payclaw.

MCP Registry · ★ 5.0free

Docs To Chunker

MCP Registry

Heading-aware Markdown chunking for documentation embeddings

MCP Registry · ★ 5.0free

Vizier

MCP Registry

An helpful Vizier MCP server for understanding your Dwarf Fortress game state, via DFHack's remote API

MCP Registry · ★ 5.0free

Obsidian

MCP Registry

MCP server for Obsidian vaults — read, write, search, and surgically edit notes, tags, and frontmatter via the Local REST API plugin. STDIO or Streamable HTTP.

MCP Registry · ★ 5.0free

Logger

MCP Registry

Transport-aware logging library for MCP (Model Context Protocol) servers

MCP Registry · ★ 5.0free

Lithtrix

MCP Registry

Memory consolidation for agents—MCP: search, memory write, commons read, blobs, browse.

MCP Registry · ★ 5.0free

Canvas Parent

MCP Registry

Canvas LMS (Instructure) MCP server — student/observer read access with optional file download

MCP Registry · ★ 5.0free

Codegraph

MCP Registry

Live, queryable knowledge graph for your codebase. Indexes JS/TS into an embedded graph DB with embeddings and exposes an MCP server Claude Code and Cursor can call.

MCP Registry · ★ 5.0free

Agent Guard

MCP Registry

Open-source CLI scanner for risky MCP server and AI agent tool configuration.

MCP Registry · ★ 5.0free

Gfw Cli

MCP Registry

MCP server for Global Fishing Watch data — vessel search, events, fishing hours, and region lookups

MCP Registry · ★ 5.0free

About Ar skills on iClaude

iClaude is the universal install layer for AI skills. Every Ar skill on this page can be installed into Claude Code, Claude Desktop, Cursor, ChatGPT, n8n, Codex, and more — using a single copy-paste command. No config drift, no per-stack adapters, no manual MCP wiring.