# Website Tech Stack Detector (`weio/website-tech-stack-detector`) Actor

Detect the tech stack of a list of websites: CMS or site builder (WordPress, Wix, Squarespace, Webflow), e-commerce platform (Shopify, WooCommerce), analytics and ad pixels, marketing and chat tools, payments and hosting/CDN. A lightweight BuiltWith or Wappalyzer alternative for lead generation.

- **URL**: https://apify.com/weio/website-tech-stack-detector.md
- **Developed by:** [Weio, Inc.](https://apify.com/weio) (community)
- **Categories:** Lead generation, Developer tools
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

$3.00 / 1,000 website 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

## Website Tech Stack Detector

Give this actor a list of public website addresses and it returns the technologies each homepage visibly uses: CMS or site builder (WordPress, Wix, Squarespace, Webflow, GoDaddy, Duda, Joomla, Drupal...), e-commerce platform (Shopify, WooCommerce, BigCommerce, Magento), analytics and ad pixels (Google Analytics, Tag Manager, Meta, LinkedIn, TikTok, Clarity, Hotjar), marketing, chat and scheduling tools (HubSpot, Mailchimp, Klaviyo, Intercom, Calendly), payments (Stripe, PayPal), JavaScript frameworks, and hosting/CDN/web server read from response headers (Cloudflare, Vercel, Netlify, WP Engine, Nginx...). About 55 technologies.

Typical uses: qualify a lead list by platform (for example, only WordPress sites without analytics), size a market for a plugin or agency service, or check what a competitor runs.

It fetches only the public homepage, once, with a declared user agent (WeioTechStack). It does not log in, submit forms, crawl other pages or test for vulnerabilities. Rules match asset addresses, script calls and headers, not plain words, so a page that only mentions "WordPress" is not flagged. A missing technology is not proof that it is absent: some sites load tools only after a click or consent.

### Input

```json
{"websites":["brooklynbrewery.com","allbirds.com"],"concurrency":8}
```

Domains or full URLs, up to 5,000 per run.

### Output

One row per website:

```json
{"input":"allbirds.com","final_url":"https://www.allbirds.com/","status_code":200,
 "technologies":["Shopify","Google Tag Manager","Cloudflare"],
 "by_category":{"ecommerce":["Shopify"],"analytics":["Google Tag Manager"],"cdn":["Cloudflare"]},
 "technology_count":3,"generator":null,"error":null}
```

`generator` is the page's own generator meta tag when present (for example "WordPress 6.6"). Sites that could not be loaded appear with `error` set (for example `ConnectionError` or `HTTPError`) so you can fix or drop them.

### Pricing

$3.00 per 1,000 sites ($0.003 per site), platform usage included. You are charged only for sites that loaded; rows with an error are free.

### Related actors from Weio

- [Website Contact Details Extractor](https://apify.com/weio/website-contact-details-extractor): business emails, phones and social links from a list of websites.
- [Local Business Website Audit](https://apify.com/weio/local-business-website-audit): mobile layout, HTTPS, title/description and contact checks for small-business sites.
- [Domain WHOIS, DNS and Email Security Checker](https://apify.com/weio/domain-whois-dns-email-security-checker): registration, DNS, MX, SPF and DMARC for a list of domains.

# Actor input Schema

## `websites` (type: `array`):

Domains or URLs, one per line (max 5,000).

## `concurrency` (type: `integer`):

Checks in parallel (1-32).

## Actor input object example

```json
{
  "websites": [
    "brooklynbrewery.com",
    "allbirds.com"
  ],
  "concurrency": 8
}
```

# Actor output Schema

## `stackRows` (type: `string`):

The default dataset with one row per website.

# 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 = {
    "websites": [
        "brooklynbrewery.com",
        "allbirds.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("weio/website-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 = { "websites": [
        "brooklynbrewery.com",
        "allbirds.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("weio/website-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 '{
  "websites": [
    "brooklynbrewery.com",
    "allbirds.com"
  ]
}' |
apify call weio/website-tech-stack-detector --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,weio/website-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/HNR0kNjtRmPWXMVA3/builds/xEMBg8s5KaIdY36Ef/openapi.json