Website Technology Detection

Detect the technologies a website uses (CMS, frameworks, analytics, CDN, web server, ecommerce, tag managers ...) from its HTML, headers, cookies, meta tags and script URLs, matched against 7,600+ open webappanalyzer fingerprints. Returns name, categories, version where visible, confidence and evidence, plus a by-category summary. Params: url (required), min_confidence (0 to 100, default 50).

Call it

import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agentsvc.io/api/v1/proxy/tech-stack", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({"url":"https://wordpress.org"}),
});
const { data, payment } = await res.json();  // payment.transaction = on-chain receipt

Input

Output

Example response (data)

{
  "url": "https://wordpress.org/",
  "status": 200,
  "technology_count": 9,
  "technologies": [
    {
      "name": "Google Tag Manager",
      "categories": [
        "Tag managers"
      ],
      "version": null,
      "confidence": 100,
      "website": "https://www.google.com/tagmanager",
      "evidence": [
        "html"
      ]
    },
    {
      "name": "Gutenberg",
      "categories": [
        "WordPress plugins",
        "Editors"
      ],
      "version": null,
      "confidence": 100,
      "website": "https://github.com/WordPress/gutenberg",
      "evidence": [
        "script https://wordpress.org/wp-content/plugins/gutenberg/build/modules/block-library/n"
      ]
    },
    {
      "name": "HSTS",
      "categories": [
        "Security"
      ],
      "version": null,
      "confidence": 100,
      "website": "https://www.rfc-editor.org/rfc/rfc6797#section-6.1",
      "evidence": [
        "header Strict-Transport-Security"
      ]
    }
  ],
  "by_category": {
    "Tag managers": [
      "Google Tag Manager"
    ],
    "WordPress plugins": [
      "Gutenberg"
    ],
    "Editors": [
      "Gutenberg"
    ],
    "Security": [
      "HSTS"
    ],
    "Databases": [
      "MySQL"
    ],
    "Web servers": [
      "Nginx"
    ],
    "Reverse proxies": [
      "Nginx"
    ],
    "Programming languages": [
      "PHP"
    ],
    "CMS": [
      "WordPress"
    ],
    "Blogs": [
      "WordPress"
    ],
    "Page builders": [
      "WordPress Block Editor",
      "WordPress Site Editor"
    ]
  },
  "server": "nginx",
  "signatures": {
    "source": "webappanalyzer (GPL-3.0)",
    "technologies": 7628
  },
  "note": "Static analysis of HTML, headers, cookies, meta tags and script URLs; technologies loaded only by client-side JavaScript may be missed.",
  "checked_at": "2026-10-06T14:33:42.336Z"
}