# Bulk Website Tech Stack, SSL Expiry & Security Headers Checker (`probelane/website-tech-stack-health`) Actor

Detect 7,600+ technologies (CMS, ecommerce, analytics, CDN, frameworks) on thousands of websites, plus uptime, HTTP status, response time, redirects, SSL certificate expiry and a security-headers grade. Fast, no browser, no API key.

- **URL**: https://apify.com/probelane/website-tech-stack-health.md
- **Developed by:** [Probelane](https://apify.com/probelane) (community)
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $3.00 / 1,000 website checkeds

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

## Bulk Website Tech Stack, SSL Expiry & Security Headers Checker

**Detect what any website is built with, and check its health, in one run.** For each URL you get:

- 🧩 **Tech stack** from 7,600+ technology fingerprints: CMS, ecommerce platform, analytics, CDN, hosting, JS frameworks, marketing and payment tools, all with versions and categories
- 🟢 **Uptime and HTTP status**: response time, final URL, redirect chain, and whether HTTP redirects to HTTPS
- 🔒 **SSL/TLS certificate**: issuer, valid-from/valid-to dates, **days until expiry**, protocol (TLS 1.2/1.3), SANs, and any verification error (expired, self-signed, hostname mismatch)
- 🛡️ **Security-headers grade** from A+ to F, covering HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy and Permissions-Policy, plus the headers that are missing and any **version-leaking headers**
- 🏷️ **Page title, meta description, language and generator** tag
- ☁️ **SaaS tools the company uses**, read from public DNS verification records (Google Workspace, Microsoft 365, Atlassian, HubSpot, Zoom …)

The tool makes **one polite request per site** and does no crawling or headless browsing. That makes it fast and much cheaper than browser-based tech-stack scrapers. It is a **Wappalyzer / BuiltWith alternative** built on the open-source webappanalyzer fingerprint set.

### Use cases

- **Sales prospecting.** Qualify accounts by stack before outreach: who runs Shopify Plus, HubSpot, Salesforce or an outdated WordPress version.
- **Lead generation.** Find every Shopify, WooCommerce, Wix or WordPress site in a list, or every site without Google Analytics, a CDN or HTTPS.
- **Web agencies.** Run a quick audit for each prospect: outdated CMS, a weak security grade, or an SSL certificate about to expire.
- **SSL expiry monitoring.** Schedule weekly runs and get alerts before certificates lapse.
- **Competitive and market research.** Measure technology market share across thousands of domains.
- **Security and IT.** Check a domain portfolio for missing HSTS or CSP, old TLS, and version-leaking servers.

### Pricing: pay per result, nothing else

This Actor uses Apify **pay-per-event** pricing, so the price is simple and predictable:

| You pay | When |
|---|---|
| **$0.003 per website** ($3 per 1,000) | Once for each website that returns a result (event `site-checked`). Every charged row in the dataset has `"charged": true`. |
| $0.00005 per run | Apify's standard Actor-start fee. |
| **$0** | Invalid inputs (not a URL or domain) and unexpected errors. An unreachable site is charged, because the uptime, DNS and SSL checks ran and `isUp: false` is the answer you asked for. |

There are **no platform-usage fees on top** of the event price: compute, storage and traffic are included.

| Run size | Cost |
|---|---|
| 100 websites | $0.30 |
| 1,000 websites | $3.00 |
| 10,000 websites | $30.00 |
| 100,000 websites | $300.00 |

**Control your spend.** Set **Max cost per run** (Run options → "Maximum cost per run", or `maxTotalChargeUsd` in the API). The Actor checks your remaining budget before every website, stops cleanly when the limit is reached and never charges beyond it. The status message tells you how many websites were left unprocessed.

**Try it free.** Apify's free plan includes $5 of monthly credit, enough for about 1,666 websites. One price covers the tech stack, uptime, SSL and security headers.

### Input

```json
{
  "urls": ["apify.com", "https://wordpress.org", "www.shopify.com", "wix.com"],
  "detectTechnologies": true,
  "checkSsl": true,
  "checkHttpsRedirect": true,
  "timeoutSecs": 15,
  "maxConcurrency": 10
}
```

### Output example (trimmed)

```json
{
  "domain": "wordpress.org",
  "isUp": true,
  "httpStatus": 200,
  "responseTimeMs": 1067,
  "httpRedirectsToHttps": true,
  "cms": "WordPress",
  "technologyNames": ["WordPress", "Gutenberg", "PHP", "MySQL", "Nginx", "Google Font API", "Google Tag Manager", "Open Graph", "HSTS"],
  "technologies": [{"name": "WordPress", "version": "7.2", "categories": ["CMS", "Blogs"], "confidence": 100, "detectedVia": ["dom", "headers", "html", "inline-script", "meta", "script"]}],
  "sslValid": true,
  "sslIssuer": "Let's Encrypt",
  "sslDaysLeft": 76,
  "sslProtocol": "TLSv1.3",
  "securityHeadersGrade": "D",
  "securityHeadersMissing": ["Content-Security-Policy", "X-Content-Type-Options", "Referrer-Policy", "Permissions-Policy"],
  "status": "ok",
  "charged": true
}
```

The Console has three table views: **Overview**, **Tech stack**, and **SSL & security**.

### FAQ

**How accurate is the tech detection?** It matches headers, cookies, HTML, script URLs, meta tags, DOM selectors and DNS against the community-maintained Wappalyzer-format fingerprints. Technologies that only reveal themselves when JavaScript runs (for example some single-page-app libraries) can be missed, because no browser is used. That trade-off is what keeps it fast and cheap.

**A site returned 403 or 429. Is it down?** No. `isUp` is true because the server answered. Some sites block automated requests, and their tech stack is then detected from headers, cookies and DNS only.

**What is the `charged` field?** It is `true` on every row you paid for, so the bill always matches the dataset. Rows for invalid inputs are delivered with an `error` and are free.

**Can AI agents use it?** Yes. It runs with limited permissions and per-result pricing, so it works through the Apify API, the Apify MCP server and other AI-agent integrations.

**Does it crawl my whole site?** No. It fetches only the URL you give, plus `http://` to test the HTTPS redirect, and makes one TLS handshake.

**What does `companySaasFromDns` mean?** These are services detected from public DNS (mostly domain-verification TXT records). They describe tools the *company* uses, not technology on the website itself.

### Related Actors by the same publisher

- ⭐ **[Security & Website Pain Prospect Finder](https://apify.com/probelane/security-prospect-finder):** selling to SMBs? It runs this check *plus* DMARC spoofing, SSL, outdated WordPress/PHP, downtime and domain expiry, then ranks companies by opportunity score (0–100) with evidence and a ready cold-open line. Built for MSPs, security consultants and web agencies.
- **[Bulk WHOIS & RDAP Domain Lookup](https://apify.com/probelane/bulk-domain-whois-rdap):** returns domain age, expiry and registrar.
- **[Bulk DMARC, SPF & DKIM Checker](https://apify.com/probelane/email-domain-security-auditor):** audits email-domain security.

*Keywords: tech stack detector, website technology lookup, wappalyzer alternative, builtwith alternative, cms detector, shopify store finder, lead generation, sales prospecting, technographics, agencies, ssl certificate checker, ssl expiry checker, security headers checker, website uptime checker, bulk url status checker.*

Fingerprints: [enthec/webappanalyzer](https://github.com/enthec/webappanalyzer) (GPL-3.0).

# Actor input Schema

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

Domains or URLs (example.com, https://www.example.com/shop). Only the URL you give is fetched — one request per site, no crawling.

## `urlsText` (type: `string`):

Optional: paste a large list separated by new lines, commas or spaces.

## `detectTechnologies` (type: `boolean`):

Fingerprint CMS, ecommerce, analytics, CDN, JS frameworks, hosting, payment and marketing tools (7,600+ technologies).

## `checkSsl` (type: `boolean`):

Issuer, validity, days until expiry, protocol, SANs and hostname match.

## `checkHttpsRedirect` (type: `boolean`):

Also request http:// to see whether the site forces HTTPS.

## `timeoutSecs` (type: `integer`):

Per-request timeout. Slow sites beyond this are reported as down.

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

Parallel checks. 10 is a safe default; raise for very large lists.

## `maxItems` (type: `integer`):

Optional cap (0 = no cap).

## Actor input object example

```json
{
  "urls": [
    "apify.com",
    "wordpress.org",
    "www.shopify.com",
    "wix.com"
  ],
  "detectTechnologies": true,
  "checkSsl": true,
  "checkHttpsRedirect": true,
  "timeoutSecs": 15,
  "maxConcurrency": 10,
  "maxItems": 0
}
```

# Actor output Schema

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

All results in the default dataset

# 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": [
        "apify.com",
        "wordpress.org",
        "www.shopify.com",
        "wix.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("probelane/website-tech-stack-health").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": [
        "apify.com",
        "wordpress.org",
        "www.shopify.com",
        "wix.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("probelane/website-tech-stack-health").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": [
    "apify.com",
    "wordpress.org",
    "www.shopify.com",
    "wix.com"
  ]
}' |
apify call probelane/website-tech-stack-health --silent --output-dataset

```

## MCP server setup

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

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/E8cUwMDswlrH90y5m/builds/Y97Lvtn1tsMZfwXO6/openapi.json