I built 4 free AI web tools entirely on n8n webhooks + AI nodes

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Hey n8n community! I’m Armani, a 17-year-old developer, and I just built a suite of 4 free AI-powered web tools running entirely on n8n Cloud using webhook triggers and AI nodes. No external servers, no frameworks – just n8n doing the heavy lifting.

The Tools

All 4 tools in one place: Launch the Tools Hub

  1. AI Email Writer - Turn rough ideas into polished professional emails in seconds
    1. AI LinkedIn Post Generator - Create scroll-stopping LinkedIn content from a simple topic
      1. AI Code Reviewer - Get instant senior-level code reviews on any code you paste
        1. AI Code Roast (NEW!) - Get your code hilariously roasted by AI with real feedback disguised as comedy

      3. How It Works

    3. Each tool is a separate n8n workflow:
      • Webhook trigger receives user input via GET/POST
        • AI node processes the request with a carefully crafted system prompt
          • Respond to Webhook returns a fully styled HTML page with the result
        • The entire frontend is server-rendered HTML returned from the webhook response. No separate hosting needed! Each tool has a beautiful dark-themed UI with syntax highlighting and formatted output.

      • What I Learned

      1. n8n webhooks are surprisingly powerful for serving web apps. You can return full HTML pages with CSS.
        1. The built-in AI nodes make text generation seamless – no API key management needed.
          1. Prompt engineering matters a lot. The difference between generic and polished output is all in the system prompt.

        3. Links

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UPDATE: Now 7 tools! Added:

- :globe_with_meridians: **Roast My Website** - enter any URL, AI roasts the design

- :zap: **AI Regex Generator** - describe a pattern in English, get working regex

- :fire: **Hire Me page** - accepting n8n automation projects

All tools: [ AI Tools Hub - Free AI-Powered Web Tools ]( AI Tools Hub - Free AI-Powered Web Tools )

Also released all 13 workflow templates on GitHub: [GitHub Release v2.0.0]( Release v2.0.0 - Full AI Tools Suite (7 Tools) · acunningham-ship-it/free-ai-tools · GitHub )

Happy to share any workflow details or answer questions!