Viral Agent.si

AI agents that help you build a website or landing page

80 AI agents and agent tools that help you build a website or landing page. Ranked by momentum this week, with setup difficulty for each.

Ranks for week 44 (Oct 26 to Nov 1, 2026). Data as of Nov 2, 2026.

  • Gaining the most momentum this week: Hallmark, Impeccable, and Open Design Agent Kit.
  • Easiest to start with (nothing to install, or adds to an AI app you already use): Impeccable, Open Design Agent Kit, and doop.
  1. #1

    Hallmark

    Hallmark is a skill that builds web pages that do not look AI-generated, for people who make landing pages and sites with an AI coding tool.

    Skill or plugin Guided command-line setup Free and open source 45.4k GitHub stars

  2. #2

    Impeccable

    Impeccable is a set of design commands for coding agents that steers, reviews, and polishes interfaces to avoid generic AI-looking design.

    Skill or plugin Adds to an AI app you already use Free and open source 99.9k GitHub stars

  3. #3

    Open Design Agent Kit

    Open Design Agent Kit is a set of design skills that adds UI design, landing pages, and dashboards to the coding agent you already use.

    Skill or plugin Adds to an AI app you already use Free and open source 816 GitHub stars

  4. #4

    claude-seo

    claude-seo is a free SEO skill for Claude Code that audits a website and produces a prioritized action plan for owners and marketers.

    Skill or plugin Guided command-line setup Free and open source 25.8k GitHub stars

  5. #5

    baoyu-design

    baoyu-design is an Agent Skill that produces UI mockups, prototypes, wireframes and slide decks as HTML files inside a local coding agent, for designers and builders who want to skip a hosted design website.

    Skill or plugin Install a desktop app or browser extension Free and open source 5,847 GitHub stars

  6. #6

    skills

    Skills is a collection of agent skills that reviews and improves user interfaces for designers and developers building screens and apps.

    Skill or plugin Guided command-line setup Free and open source 10.2k GitHub stars

  7. #7

    appllama-skills

    appllama-skills is a set of agent skills that help AI coding agents design and build mobile app screens modeled on top-grossing apps.

    Skill or plugin Guided command-line setup Free tier plus paid plans 3,938 GitHub stars

  8. #8

    taste-skill

    Taste Skill is a skill that makes coding agents design websites and app screens with real pictures and a browser check, instead of generic pages.

    Skill or plugin Guided command-line setup Free and open source 108k GitHub stars

  9. #9

    doop

    doop is a multiplayer design canvas where people and AI agents design together live, for teams who want an open-source alternative to Paper.design.

    Agent app Works in your browser or phone Free and open source 1,503 GitHub stars

  10. #10

    logo-design-skill

    Logo-design-skill is a skill that guides Claude and other AI agents through logo design, from brief to SVG files, for people creating brand identities.

    Skill or plugin Adds to an AI app you already use Free and open source 5,767 GitHub stars

  11. #11

    Huashu Design

    Huashu Design is a skill that turns a one-line request into finished designs like web pages, app prototypes, editable slides, animations, and infographics for people using Claude Code, Codex, or Cursor.

    Skill or plugin Guided command-line setup Free and open source 28.5k GitHub stars

  12. #12

    Archify

    Archify is a skill that turns an idea, plan, or codebase into an interactive diagram for people who need to understand or share a system.

    Skill or plugin Guided command-line setup Free and open source 92.6k GitHub stars

  13. #13

    UI UX Pro Max

    UI UX Pro Max is a skill that gives AI coding agents design guidance for building professional interfaces for websites and apps.

    Skill or plugin Guided command-line setup Free tier plus paid plans 144k GitHub stars

  14. #14

    anti-slop

    Anti Slop is a set of rules that stops an AI coding agent from producing generic UI, text, and code for people building websites and apps.

    Skill or plugin Guided command-line setup Free and open source 7,971 GitHub stars

  15. #15

    AI Website Cloner Template

    AI Website Cloner Template is a skill that recreates an existing website as a Next.js app for people who want a copy of a site's design and layout.

    Skill or plugin Guided command-line setup Free and open source 38.4k GitHub stars

  16. #16

    marketingskills

    marketingskills is a set of skill files that teaches Claude Code and other coding agents marketing tasks like copywriting, SEO, and conversion optimization for marketers.

    Skill or plugin Adds to an AI app you already use Free and open source 57.9k GitHub stars

  17. #17

    brand-identity-skill

    Brand-identity-skill is a skill that designs a logo, fonts and colour palette together from one brief for small businesses and creators.

    Skill or plugin Guided command-line setup Free and open source 282 GitHub stars

  18. #18

    oil-ui

    Oil UI is a skill that teaches Claude Code, Codex, and other AI agents to design websites and app screens, for people who need a good-looking interface without a designer.

    Skill or plugin Guided command-line setup Free tier plus paid plans 2,619 GitHub stars

  19. #19

    scroll-craft

    scroll-craft is an agent skill that helps a coding agent build premium scroll-driven websites with a real design standard, for people who want immersive landing pages.

    Skill or plugin Guided command-line setup Free and open source 4,381 GitHub stars

  20. #20

    Remotion Agent Skills

    Remotion Agent Skills is a set of instruction files that teach AI coding agents to build and edit videos with Remotion.

    Skill or plugin Install a desktop app or browser extension Free and open source 6,067 GitHub stars

  21. #21

    Open Design

    Open Design is a local-first, open source design workspace where teams and AI coding agents build prototypes, slides, images, and videos together.

    Agent app Install a desktop app or browser extension Free tier plus paid plans 105k GitHub stars

  22. #22

    OpenPencil

    OpenPencil is a vector design tool that turns text prompts into UI on a canvas, with AI agent teams working in parallel for designers and developers.

    Agent app Install a desktop app or browser extension Free and open source 7,018 GitHub stars

  23. #23

    motion-design-skill

    Motion-design-skill is a skill that teaches AI agents to choose timing, easing, and choreography for UI animations.

    Skill or plugin Adds to an AI app you already use Free and open source 2,694 GitHub stars

  24. #24

    Figma-Context-MCP

    Figma-Context-MCP is an MCP server that gives AI coding tools like Cursor access to Figma layout data so they can build designs accurately.

    MCP server or connector Guided command-line setup Free and open source 16.1k GitHub stars

  25. #25

    gstack

    gstack is a set of 23 slash-command skills that turn Claude Code into a virtual engineering team for solo founders and tech leads.

    Skill or plugin Guided command-line setup Free and open source 139k GitHub stars

  26. #26

    awwwards

    Awwwards is a skill that builds polished, award-style websites from a one-line brief for people who want a distinctive site without design work.

    Skill or plugin Guided command-line setup Free and open source 1,055 GitHub stars

  27. #27

    iphone-duo-skills

    iphone-duo-skills is a set of skill files that teach an AI coding agent how to build iOS apps for the iPhone Duo foldable.

    Skill or plugin Adds to an AI app you already use Free and open source 273 GitHub stars

  28. #28

    Figwright

    Figwright is an MCP server that lets AI coding agents read Figma designs into code and write changes back to the canvas.

    MCP server or connector Guided command-line setup Free and open source 1,257 GitHub stars

  29. #29

    Scenario for Blender

    Scenario for Blender is an add-on that brings AI image, video, 3D and material generation into Blender for 3D artists and game asset makers.

    Agent app Install a desktop app or browser extension Paid 933 GitHub stars

  30. #30

    SOMA

    SOMA is a desktop app that turns plain descriptions into 3D printable models by having a coding agent write CadQuery code for makers.

    Agent app Install a desktop app or browser extension Free and open source 442 GitHub stars

  31. #31

    Open Intelligent UI

    Open Intelligent UI is a chat interface that turns questions into explanations, comparisons, and working tools for people exploring ideas.

    Agent app Guided command-line setup Free and open source 4,108 GitHub stars

  32. #32

    cinetic

    cinetic is a skill that makes a coding agent direct cinematic launch films and motion design for product teams.

    Skill or plugin Guided command-line setup Free and open source 961 GitHub stars

  33. #33

    agent-skills

    Agent-skills is a collection of skill packs that teach AI coding agents to audit Vercel projects, review UI and writing, and deploy sites for developers.

    Skill or plugin Guided command-line setup Free and open source 33.4k GitHub stars

  34. #34

    refactoring-ui-skill

    Refactoring UI skill is a Claude skill that reviews web interface designs against a rulebook and generates design tokens for people building web UI with AI.

    Skill or plugin Adds to an AI app you already use Free and open source 352 GitHub stars

  35. #35

    RuiC-card-skill

    RuiC-card-skill is a skill that turns one sentence or a reference image into an interactive 3D holographic trading card web page for people who want custom collectible cards.

    Skill or plugin Guided command-line setup Free and open source 630 GitHub stars

  36. #36

    designer-skills

    Designer Skills is a collection of skills and commands that teach Claude Code and Gemini CLI to help with design work from research to delivery for designers.

    Skill or plugin Install a desktop app or browser extension Free and open source 3,212 GitHub stars

  37. #37

    Skills

    Skills is a collection of agent skill folders that teaches Codex, Claude, and Cursor how to build landing pages, 3D scenes, and UI prompts for designers and builders.

    Skill or plugin Guided command-line setup Free and open source 7,183 GitHub stars

  38. #38

    drawio-skill

    drawio-skill is an agent skill that turns text, code, and system sources into editable draw.io architecture diagrams for technical teams.

    Skill or plugin Guided command-line setup Free and open source 10.5k GitHub stars

  39. #39

    geo-seo-claude

    geo-seo-claude is a skill that audits a website for visibility in AI search tools like ChatGPT and Perplexity, for site owners and marketers.

    Skill or plugin Guided command-line setup Free and open source 11.4k GitHub stars

  40. #40

    threejs-architecture-effects

    threejs-architecture-effects is a skill that makes an agent build an orbitable 3D building in Three.js that assembles itself for web designers and developers.

    Skill or plugin Guided command-line setup Free and open source 678 GitHub stars

  41. #41

    app-store-screenshots

    App Store Screenshots is a skill that builds a screenshot editor for App Store and Google Play marketing images for app makers who need store-ready visuals.

    Skill or plugin Guided command-line setup Free and open source 7,773 GitHub stars

  42. #42

    Oil Motion

    Oil Motion is a skill that builds scroll and mouse-driven web animations for people making web pages with an AI agent.

    Skill or plugin Guided command-line setup Not stated 2,760 GitHub stars

  43. #43

    Kami

    Kami is a skill that gives AI agents layout rules and templates to export polished PDF, PNG, and editable PowerPoint documents for writers and business users.

    Skill or plugin Guided command-line setup Free and open source 12.2k GitHub stars

  44. #44

    design-extract

    design-extract is a command-line tool that reads a website's design system and exports tokens and code for designers and developers building matching interfaces.

    Agent app Guided command-line setup Free and open source 4,458 GitHub stars

  45. #45

    Pascal Editor

    Pascal Editor is an open-source 3D building editor that lets people and AI agents design floorplans and buildings through MCP tools.

    Agent app Guided command-line setup Free and open source 25.3k GitHub stars

  46. #46

    21st MCP

    21st MCP is an MCP server that lets Cursor, Claude Code, and Windsurf search, generate, and publish React and Tailwind UI components for developers building interfaces.

    MCP server or connector Guided command-line setup Not stated 6,342 GitHub stars

  47. #47

    PinchTab

    PinchTab is a browser control server that lets AI agents drive Chrome for web research and browser tasks on your own machine.

    Agent app Guided command-line setup Free and open source 10.5k GitHub stars

  48. #48

    UX/UI Agent Skills

    UX/UI Agent Skills is a skill that helps coding agents design interfaces to a professional standard and checks the result with 52 gates for developers.

    Skill or plugin Guided command-line setup Free and open source 3,074 GitHub stars

  49. #49

    Flint

    Flint is an MCP server that lets AI agents create good-looking charts from simple chart specs for anyone chatting with an agent.

    MCP server or connector Adds to an AI app you already use Free and open source 4,527 GitHub stars

  50. #50

    make-interfaces-feel-better

    Make-interfaces-feel-better is a skill that adds small interface polish details like animations, spacing, and hover states for developers and designers building web interfaces.

    Skill or plugin Guided command-line setup Free and open source 3,894 GitHub stars

  51.  

    Next AI Draw.io

    Next AI Draw.io is a tool that draws and edits draw.io diagrams from chat instructions for people who need diagrams without drawing them by hand.

    Agent app Works in your browser or phone Free and open source 36.6k GitHub stars

  52.  

    Onlook

    Onlook is an open-source visual editor that lets designers build and edit Next.js websites with AI, directly in the code.

    Agent app Works in your browser or phone Free and open source 27.1k GitHub stars

  53.  

    Nginx UI

    Nginx UI is a self-hosted web interface that makes managing Nginx web server configs easier for server admins, with an MCP interface for AI agents.

    Agent app Guided command-line setup Free and open source 11.7k GitHub stars

  54.  

    Dashboard Icons

    Dashboard Icons is an MCP server and icon library that finds matching service logos for dashboards and app directories for AI agent users.

    MCP server or connector Adds to an AI app you already use Free and open source 8,990 GitHub stars

  55.  

    stitch-skills

    Stitch-skills is a library of skill add-ons that teach coding agents to turn Google Stitch designs into code, design systems, and assets for designers and developers.

    Skill or plugin Guided command-line setup Not stated 8,657 GitHub stars

  56.  

    Open CoDesign

    Open CoDesign is a desktop app that turns prompts into prototypes, slide decks, and PDFs using the AI model you already pay for.

    Agent app Install a desktop app or browser extension Free and open source 8,143 GitHub stars

  57.  

    iPolloWork

    iPolloWork is a desktop workbench that lets people and AI agent teams plan, run, and edit projects, documents, slides, design, and video in one local workspace.

    Agent app Install a desktop app or browser extension Free and open source 7,355 GitHub stars

  58.  

    Claude-BugHunter

    Claude-BugHunter is a skill bundle that adds bug hunting and external red-team know-how to Claude Code for security testers working on authorized targets.

    Skill or plugin Adds to an AI app you already use Free and open source 5,379 GitHub stars

  59.  

    gzh-design-skill

    gzh-design-skill is a skill that turns Markdown articles into formatted HTML ready to paste into WeChat Official Accounts for writers and marketers.

    Skill or plugin Guided command-line setup Free and open source 4,223 GitHub stars

  60.  

    effective-html

    Effective HTML is a set of skills that helps AI agents create self-contained HTML wireframes, prototypes, plans, and diagrams for designers and developers.

    Skill or plugin Adds to an AI app you already use Free and open source 3,817 GitHub stars

  61.  

    skills

    Skills is a skill that gives Claude Code and Codex business, marketing, and UX frameworks drawn from bestselling books.

    Skill or plugin Adds to an AI app you already use Free and open source 2,554 GitHub stars

  62.  

    TypeUI

    TypeUI is a set of design skills and UI prompts that helps AI coding tools build better user interfaces for websites and apps.

    Skill or plugin Adds to an AI app you already use Free tier plus paid plans 2,187 GitHub stars

  63.  

    dream-loop

    dream-loop is a skill that helps an AI agent build games, apps, and 3D scenes with polished visuals by repeatedly comparing its work to a generated target image.

    Skill or plugin Adds to an AI app you already use Free and open source 1,771 GitHub stars

  64.  

    website-rebuild-skill

    website-rebuild-skill is a skill that has Claude Code or Codex rebuild a site from its code and verify the copy.

    Skill or plugin Guided command-line setup Free and open source 1,602 GitHub stars

  65.  

    GoLive

    GoLive is an open-source Agent Skill that takes an agent-built app live on your own hosting, database, domain and email accounts for solo builders.

    Skill or plugin Guided command-line setup Free and open source 1,357 GitHub stars

  66.  

    JourniOne-Planning-Skills

    JourniOne-Planning-Skills is a skill that turns a travel idea into a daily itinerary, a map-based travel journal, and hotel and flight comparisons for trip planners.

    Skill or plugin Install a desktop app or browser extension Not stated 1,176 GitHub stars

  67.  

    power-platform-skills

    power-platform-skills is a plugin marketplace of skills that teaches GitHub Copilot and Claude Code to build and deploy Power Platform apps for developers.

    Skill or plugin Guided command-line setup Free and open source 1,103 GitHub stars

  68.  

    fire-your-seo-agency

    fire-your-seo-agency is a Claude Code skill that audits and optimizes a website for SEO, AI answer engines, and Naver search without a paid agency.

    Skill or plugin Guided command-line setup Free and open source 988 GitHub stars

  69.  

    genjutsu

    genjutsu is a set of skills for Claude Code that adds motion, micro-interactions and design systems to web, Android and iOS interfaces for developers and designers building apps.

    Skill or plugin Guided command-line setup Free and open source 722 GitHub stars

  70.  

    Copperhead

    Copperhead is an AI agent that edits and checks real KiCad circuit board files from a prompt, for electronics engineers and hardware teams.

    Agent app Guided command-line setup Not stated 676 GitHub stars

  71.  

    ai-promo-video-maker

    ai-promo-video-maker is a skill that turns a product name or URL into a 4K promo video for businesses and products.

    Skill or plugin Guided command-line setup Free and open source 428 GitHub stars

  72.  

    affectUI

    affectUI is a library of React components for displaying AI agent work, such as tool calls, traces, and approvals, for developers building agent interfaces.

    Skill or plugin Guided command-line setup Free and open source 423 GitHub stars

  73.  

    Awwwards-mcp

    Awwwards-mcp is an MCP server that lets AI coding agents search award-winning websites for design inspiration and rebuild their layouts for people building websites.

    MCP server or connector Guided command-line setup Free and open source 384 GitHub stars

  74.  

    Motion2Code

    Motion2Code is a skill that teaches coding agents to rebuild a motion design video as editable SVG and GSAP code for designers and developers.

    Skill or plugin Guided command-line setup Free and open source 317 GitHub stars

  75.  

    k-style-ui-ux

    k-style-ui-ux is a Claude Code, Codex, and Cursor plugin that turns a one-page product spec into a draft of Korean-style mobile app screens for people building early apps without a designer.

    Skill or plugin Install a desktop app or browser extension Free and open source 284 GitHub stars

  76.  

    RES

    RES is a skill that turns a SaaS product into a build kit for rebuilding it, using a browser study, for teams planning a clone or competitor.

    Skill or plugin Install a desktop app or browser extension Free and open source 249 GitHub stars

  77.  

    skills

    skills is a collection of agent skills that make screenshots and cinematic UI shots for marketers and content creators.

    Skill or plugin Guided command-line setup Free and open source 237 GitHub stars

  78.  

    design.how

    design.how is a set of agent skills that turns an app's existing UI into a design system and keeps new screens consistent with it.

    Skill or plugin Guided command-line setup Free and open source 235 GitHub stars

  79.  

    api-mcp-server

    An MCP server that lets AI apps manage Hostinger hosting, domains, VPS, email, and WordPress through the Hostinger API for developers and site owners.

    MCP server or connector Adds to an AI app you already use Free and open source 168 GitHub stars

  80.  

    Prevue

    Prevue is a tool that lets AI coding agents see the Android Compose screens they build, redrawn in a browser for developers working without Android Studio.

    Agent app Guided command-line setup Free and open source 82 GitHub stars

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