Website technology detection: CMS and stack

$0.01 per call · failed calls are never charged · no account or subscription: pay per call with a card key or USDC

Website technology detection: which CMS or site builder, JavaScript framework, analytics and ad pixels, payment, support and captcha widgets, CDN, hosting and web server a site runs on, read from its home page HTML and response headers, each with the evidence found. Use for lead qualification, competitor research, security reviews and sales prospecting by technology.

Run it free (25 free calls) Buy credits by card (from $1) Example result (JSON)

Try it with your own inputs

Website or page URL

Uses one of your 25 free calls. Nothing is charged, and a call that fails is not counted.

Inputs

NameTypeDescription
url (required)stringWebsite or page URL

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/tech/detect?url=https%3A%2F%2Fvercel.com%2F"

Or one of your 25 free calls, no key:

curl "https://tools.funwords.eu/tech/detect?url=https%3A%2F%2Fvercel.com%2F&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "url": "https://vercel.com/",
  "technologies": [
    {
      "name": "Next.js",
      "category": "JavaScript frameworks",
      "evidence": "page /_next/static/"
    },
    {
      "name": "Vercel",
      "category": "CDN and hosting",
      "evidence": "header x-vercel-id"
    }
  ],
  "byCategory": {
    "JavaScript frameworks": [
      "Next.js"
    ],
    "CDN and hosting": [
      "Vercel"
    ]
  },
  "generator": null,
  "server": "Vercel",
  "poweredBy": null,
  "count": 2
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is tech_detect, and the first 25 successful calls are free:

https://tools.funwords.eu/mcp

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