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Plot Agents
Chart
Scult Tools
calculate.at
Speed-Check
iLoveSchema
PerformanceTest
ClickRank.ai
Free MultiLipi Schema.org Generator
Speedtest.net
Scult Tools is a free toolkit that works the same whether a human or an AI agent is driving it.
For people: 15 browser-based tools across SEO, business, development, design and productivity — schema markup and FAQ schema generators, UTM builder, marketing ROI calculator, website speed test, invoice generator with GST, QR codes with UPI, JSON formatter, favicon generator, word counter, colour palette with WCAG contrast checking, business name and slogan generators, email signatures, and an AI Visibility Checker that scores whether ChatGPT, Claude and Perplexity can actually see your site.
For agents: a public MCP server at tools.scult.in/api/mcp exposes 25 of those capabilities as callable tools. One command in Claude Code, or one URL in Cursor or ChatGPT. No account, no API key, no cost.
Plus a 1,170-prompt library version-stamped against the tool each prompt was tested on, and 14,080 real agent skills synced daily from public repos — exportable as AGENTS.md, .cursorrules or Copilot instructions.
13 of the 15 tools never send your data anywhere. No signup on any of it.
Plot Agents Scult ToolsScult Tools's answer:
We run Scult, a web, app and AI development studio in Delhi NCR. Most of our clients are startups and local businesses without a software budget.
The same thing kept happening internally. Someone needed schema markup for a client page, or a QR code for a shop counter, or a quick invoice. They'd Google it, land on a free tool, fill in every field — and then get a watermark stamped across the output or a signup wall. Our team was losing time to this several times a week.
So we built our own version of the one we needed most. Then another. It got out of hand, and at fifteen we stopped and put them on one site.
The AI Visibility Checker came from a different frustration. Our clients kept asking where they showed up in Google, but more of their customers were asking ChatGPT for recommendations instead of searching. Nobody could tell them whether they appeared in those answers, so we built something that tries to.
Scult Tools's answer:
Most "free" online tools aren't. You fill in the form, hit generate, and then hit a signup wall, a watermark, or a "2 of 3 free credits used" popup. Scult Tools has none of that — 15 tools, no account, no watermark, no usage cap, nothing to upgrade to.
Two things you won't find bundled elsewhere. First, it's built with India in mind: GST-ready invoicing and UPI payment QR codes are first-class features, not afterthoughts. Second, the AI Visibility Checker — instead of only optimising for Google, it tells you whether ChatGPT and other AI assistants actually mention your brand when someone asks for a recommendation.
The tools also run in your browser rather than on our servers, so what you type stays with you. And there's a library of 254 AI prompts organised by role alongside them.
Scult Tools's answer:
Because you'll finish the task instead of hitting a wall halfway through it.
No signup, no watermark on the output, no daily limits, no credit system, and no paid tier the free version is quietly crippled to sell. If you need one invoice, one QR code, or one block of schema markup, you get it in under a minute and leave.
It's also one site instead of fifteen. Most people bounce between a different sketchy tool site for every small job, each with its own popups. This is one bookmark covering SEO, invoicing, development, design and productivity.
The honest version of why it's free: we're a web and AI development studio. These tools started as internal utilities for our own team, and making them public is how people discover what we do. That's the entire business model — there's no bait and switch coming later.
Scult Tools's answer:
Marketers, SEO specialists, freelancers, agency teams, small business owners and developers — people who need a specific small job done and don't want to sign up for a platform to do it.
Concretely: an SEO adding schema markup to a client page, a freelancer sending an invoice with GST, a shop owner printing a UPI QR for the counter, a developer pasting in messy JSON at 1am, a founder trying out business names, a designer checking whether their colour palette passes WCAG contrast.
The core is India — GST invoicing and UPI QRs reflect that — but nothing is region-locked, and tools like the JSON formatter, schema generator and word counter get used worldwide.
Scult Tools's answer:
Next.js (App Router) with React Tailwind CSS Deployed on Vercel, served from the Mumbai edge region with static prerendering Client-side JavaScript for the tool logic — most tools compute entirely in the browser, so inputs aren't sent to a server Google Analytics 4 for page-level analytics
Scult Tools's answer:
Freelancers and independent consultants across India Small and mid-sized businesses handling their own marketing Digital marketing and SEO agencies Startup founders and early-stage product teams Web and app developers
Chart - Create the most popular types of charts by real or random data - GitHub - pavelkuligin/chart: Create the most popular types of charts by real or random data
calculate.at - Every calculator you'll ever need for money, health, math, and everyday conversions — worked examples included, nothing to sign up for.