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Add-ons for Claude Code

Claude Code can be extended with 43,055 MCP servers and 123,917 agent skills from the catalog. Top picks right now include World Monitor, REA and Front-End Checklist. Each section below links to the top picks for Claude Code, the install command, and the file Claude Code reads its configuration from. Rankings weigh adoption, freshness and documentation; money never changes the order. Listings come from the official MCP Registry, public GitHub repositories and marketplaces, and are checked daily. Before you install anything, read its repository and give it only the access it needs: every listing page shows the source, the license and a freshness grade.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

Top picks for Claude Code

  1. 1
    World Monitor

    worldmonitor.appOfficial

    Real-time global intelligence across conflict, markets, energy, trade, shipping and cyber.

    • Published by the vendor
    • 89.4K GitHub stars
    • One-line install for Claude Code

    ★ 89.4KLast active Oct 24, 2026Remote (HTTP)Claude Code, VS Code, Cursor, Windsurf

  2. 2
    REA

    morluto

    Reverse engineer anything from your terminal or agent with one CLI and MCP server.

    • Most GitHub stars here (377,435)
    • One-line install for Claude Code
    • Active in the last 30 days

    ★ 377.4KLast active Oct 25, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  3. 3
    Front-End Checklist

    thedaviddias

    Review frontend code and live pages against 386 quality-gated web development rules.

    • 74.6K GitHub stars
    • One-line install for Claude Code
    • Remote server, no local install

    ★ 74.6KLast active Oct 5, 2026Remote (HTTP)Claude Code, VS Code, Cursor, Windsurf

  4. 4
    diagnosing-superpowers

    obra

    Use when a superpowers session went wrong and your human partner wants to know why — repeated work, ignored plans, stumbles, poor results, a skill that didn't…

    • Repository has 304.6K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 304.6KLast active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6

  5. 5
    ui-ux-pro-max

    nextlevelbuilder

    UI/UX design intelligence for web, mobile, and desktop.

    • Repository has 139.9K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 139.9KLast active Oct 3, 2026Claude Code, Claude apps, Codex, Cursor +6

  6. 6
    reverse-engineer-anything

    morluto

    Reverse engineer native, managed, Electron/JavaScript, packaged, firmware, and browser targets with REA, and build agent environments (AgentEnv bundles) of…

    • Largest repository here (377,435 stars)
    • Active in the last 30 days
    • Open source (MIT)

    ★ 377.4KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

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