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Plain-word guides and superpowers for Claude Code, Codex and Gemini.

Free Free catalog: tested by us, made by others

Skills

Skills are superpowers you add to your assistant. A skill is a set of written instructions, sometimes with small tools, that teaches your assistant one job, such as planning a long task or writing in a natural voice. You install it once and the assistant uses it when the job comes up. Plugins, hooks and commands are listed here too: they install the same way.

Skills, Agents and Connectors Explained

Start here: skills for people who build an app

Our must-haves, most useful first. Install the first one, try it, then add more.

Start with this one

  1. RecommendedskillInstalls cleanly

    Plan, test and check its own work

    Superpowers

    Makes the assistant ask questions, plan, test and check its own work.

    Test: installs cleanly and works without an account. Not yet used on real work.

    EveryoneWatch outIt changes how the agent works. It asks many questions and may start helper agents, which uses more of your usage limit.

    For Claude Code Also works with Codex CLI and Gemini CLI — see all steps
    Type this inside Claude Code
    /plugin install superpowers@claude-plugins-official
    Other ways to install, and how we tested it

  1. Pick colours, fonts and layouts

    UI/UX Pro Max

    Helps the assistant choose colours, fonts and layouts that look good.

    RecommendedskillPartly tested (needs an account)
    Install: step 1 of 2
    Step 1 of 2 · Type this inside Claude Code
    /plugin marketplace add nextlevelbuilder/ui-ux-pro-max-skill

    For Claude Code. All steps and how we tested it

  2. Save the plan of long tasks

    Planning with Files

    Keeps the plan and progress of a long task in notes, so the assistant does not lose its place.

    RecommendedskillInstalls cleanly
    Install line
    Paste this in the terminal
    npx skills add OthmanAdi/planning-with-files --skill planning-with-files -g

    For any assistant. All steps and how we tested it

  3. Design a safe database

    pg-aiguide

    Helps the assistant design a safe, tidy database for your app.

    skillInstalls cleanly
    Install: step 1 of 2
    Step 1 of 2 · Paste this in the terminal
    claude plugin marketplace add timescale/pg-aiguide

    For Claude Code. All steps and how we tested it

  4. Build phone apps

    Expo Skills

    Helps the assistant build phone apps.

    skillPartly tested (needs an account)
    Install line
    Paste this in the terminal
    claude plugin install expo@claude-plugins-official

    For Claude Code. All steps and how we tested it

6 skills match your filters

6 skills match your filters.

  • Plan, test and check its own work

    Superpowers

    Makes the assistant ask questions, plan, test and check its own work.

    RecommendedskillInstalls cleanly
    Install line
    Type this inside Claude Code
    /plugin install superpowers@claude-plugins-official

    For Claude Code. All steps and how we tested it

  • Pick colours, fonts and layouts

    UI/UX Pro Max

    Helps the assistant choose colours, fonts and layouts that look good.

    RecommendedskillPartly tested (needs an account)
    Install: step 1 of 2
    Step 1 of 2 · Type this inside Claude Code
    /plugin marketplace add nextlevelbuilder/ui-ux-pro-max-skill

    For Claude Code. All steps and how we tested it

  • Save the plan of long tasks

    Planning with Files

    Keeps the plan and progress of a long task in notes, so the assistant does not lose its place.

    RecommendedskillInstalls cleanly
    Install line
    Paste this in the terminal
    npx skills add OthmanAdi/planning-with-files --skill planning-with-files -g

    For any assistant. All steps and how we tested it

  • Design a safe database

    pg-aiguide

    Helps the assistant design a safe, tidy database for your app.

    skillInstalls cleanly
    Install: step 1 of 2
    Step 1 of 2 · Paste this in the terminal
    claude plugin marketplace add timescale/pg-aiguide

    For Claude Code. All steps and how we tested it

  • Build phone apps

    Expo Skills

    Helps the assistant build phone apps.

    skillPartly tested (needs an account)
    Install line
    Paste this in the terminal
    claude plugin install expo@claude-plugins-official

    For Claude Code. All steps and how we tested it

  • Add payments with Stripe

    Stripe AI Toolkit

    Stripe's official plugin with skills and tools that help an agent add payments, check out pages and billing to an app.

    skillPartly tested (needs an account)
    Install line
    Paste this in the terminal
    claude plugin install stripe@claude-plugins-official

    For Claude Code. All steps and how we tested it

Every must-have for people who build an app: skills, agents and connectors