# Check What CMS & Tech Stack Websites Use, in Bulk (`craigmckee/tech-stack-detector`) Actor

Paste a list of websites and see what each one runs on: Shopify or WooCommerce, WordPress, GA4, Meta Pixel, live chat, payments, CDN and more (185+ technologies), with the evidence for every detection. Great for finding your next sales leads.

- **URL**: https://apify.com/craigmckee/tech-stack-detector.md
- **Developed by:** [Print & Plan UK](https://apify.com/craigmckee) (community)
- **Categories:** SEO tools, Lead generation
- **Security:** Limited permissions
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

$2.00 / 1,000 site analyseds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Check What CMS & Tech Stack Websites Use, in Bulk

**What it does:** tells you what each website in a list is built with, by Print & Plan UK. **You give it:** website URLs or bare domains. **You get:** one row per site listing its CMS or site builder, ecommerce platform (Shopify, WooCommerce and others), analytics, tag manager, ad pixels, cookie tool, live chat, payments, framework, server and CDN, each with a confidence score and the evidence that triggered it. **Cost per run:** $0.002 per site analysed, so 1,000 sites cost $2; blocked, failed or robots-disallowed sites are free. **Example inputs:** `https://www.allbirds.com`, `https://wordpress.org/news/`, `gov.uk`.

Good for sales prospecting ("every Shopify store in my list that has no live chat"), agency audits, competitor research and market sizing.

### Highlights

- **185+ technologies in 30+ categories**, including Shopify, WooCommerce, Magento, WordPress, Webflow, Wix, Next.js, Nuxt, GA4, GTM, Meta Pixel, HubSpot, Klaviyo, Intercom, OneTrust, Stripe, Klarna, Cloudflare, Vercel and Fastly.
- **Evidence for every detection**, e.g. `header powered-by: Shopify`, `meta generator: WordPress 6.6`. Easy to trust and easy to filter.
- **Lightweight and polite**: one page request per site plus robots.txt (honoured per RFC 9309). No headless browser, no proxies, no logins.
- **Versions** where the site exposes them (WordPress, Drupal, nginx, PHP, jQuery and others).
- **$2 per 1,000 sites**. Sites that block bots, fail or disallow crawling are **free**.

### Input example

```json
{
  "urls": ["https://www.allbirds.com", "https://wordpress.org/news/", "https://vercel.com", "gov.uk"],
  "includeEvidence": true,
  "maxConcurrency": 10
}
```

### Output example (trimmed)

```json
{
  "url": "https://www.allbirds.com/",
  "httpStatus": 200,
  "title": "Allbirds: Comfortable, Sustainable Shoes & Apparel",
  "technologyCount": 10,
  "technologyNames": ["Cloudflare", "OneTrust", "Shopify", "Swiper", "HTTP/3", "Open Graph", "Content Security Policy", "HSTS", "Microsoft Clarity", "Google Tag Manager"],
  "categories": {"Ecommerce": ["Shopify"], "CDN": ["Cloudflare"], "Cookie consent": ["OneTrust"], "Tag manager": ["Google Tag Manager"], "Session recording": ["Microsoft Clarity"]},
  "technologies": [
    {"name": "Shopify", "category": "Ecommerce", "confidence": 100, "version": null, "evidence": ["header powered-by: Shopify", "html: cdn.shopify.com"]},
    {"name": "Cloudflare", "category": "CDN", "confidence": 100, "version": null, "evidence": ["header server: cloudflare", "header cf-ray: …"]}
  ]
}
```

Confidence: **100** means a header, meta tag or cookie name matched (or two independent signals did). **75** means a single script or HTML signature. **50** means implied by another technology (e.g. WooCommerce implies WordPress) or a heuristic.

### Pricing (pay per event)

| Event | Price |
|---|---|
| Site analysed | $0.002 (= $2 per 1,000 sites) |

Not charged: invalid URLs, sites disallowed by robots.txt, HTTP 4xx/5xx responses (partial header-level detections are still returned) and network errors.

### FAQ

**Why didn't it detect X?** Only the first HTML response is analysed and JavaScript is not executed, so tools injected later by a tag manager may not appear. That keeps the Actor fast and cheap. Request a technology through the Issues tab.

**Some sites return 403?** Some sites block all automated traffic. We respect that and don't use proxies or browser disguises to get around it, and those sites cost you nothing.

**Are cookies stored?** Only cookie *names* are used for matching. Values are never read into the output.

Fingerprints are original work (not derived from Wappalyzer's GPL data).

### More tools from this developer

- [Bulk Domain Intel (RDAP)](https://apify.com/craigmckee/domain-intel-rdap): domain age, expiry, registrar, DNS and an SPF/DMARC/DKIM grade.
- [Wayback Machine Change Tracker](https://apify.com/craigmckee/wayback-change-tracker): capture history and a text diff between archived versions.
- [Broken Link & Redirect Chain Auditor](https://apify.com/craigmckee/site-link-auditor): broken links, redirect chains, mixed content and noindex pages.
- [Document to Markdown + RAG chunks](https://apify.com/craigmckee/document-to-markdown): PDF, Word, PowerPoint and Excel to Markdown and RAG-ready chunks.

# Actor input Schema

## `urls` (type: `array`):

Websites or page URLs to analyse (e.g. `apify.com` or `https://www.example.com/`). One page is fetched per entry. Duplicates are removed.

## `includeEvidence` (type: `boolean`):

For each technology, show what matched (header, meta tag, script URL or HTML snippet).

## `maxConcurrency` (type: `integer`):

Sites analysed in parallel.

## `requestTimeoutSecs` (type: `integer`):

Timeout for each HTTP request.

## Actor input object example

```json
{
  "urls": [
    "https://apify.com",
    "https://www.gov.uk",
    "https://wordpress.org/news/",
    "https://www.allbirds.com"
  ],
  "includeEvidence": true,
  "maxConcurrency": 10,
  "requestTimeoutSecs": 20
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "urls": [
        "https://apify.com",
        "https://www.gov.uk",
        "https://wordpress.org/news/",
        "https://www.allbirds.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("craigmckee/tech-stack-detector").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "urls": [
        "https://apify.com",
        "https://www.gov.uk",
        "https://wordpress.org/news/",
        "https://www.allbirds.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("craigmckee/tech-stack-detector").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "urls": [
    "https://apify.com",
    "https://www.gov.uk",
    "https://wordpress.org/news/",
    "https://www.allbirds.com"
  ]
}' |
apify call craigmckee/tech-stack-detector --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,craigmckee/tech-stack-detector"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/Px9OwakGEdCC20Mmn/builds/x0MWrxy3lmaRHbijh/openapi.json