# Tech Stack Enricher (`nexgenwatch/tech-stack-enricher`) Actor

Give it a list of company domains; it returns one CRM-ready record per domain describing

- **URL**: https://apify.com/nexgenwatch/tech-stack-enricher.md
- **Developed by:** [NexGen Watch](https://apify.com/nexgenwatch) (community)
- **Categories:** Business
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $33.50 / 1,000 techstack records

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.
Since this Actor supports Apify Store discounts, the price gets lower the higher subscription plan you have.

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

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
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.
Actors are written with capital "A".

## 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.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Tech Stack Enricher

Give it a list of company domains; it returns **one CRM-ready record per domain** describing
the technologies a site runs (frameworks, CMS, ecommerce, analytics, CDN, hosting, servers). It works only from each company's own public pages, and it honours **robots.txt per
domain**: any page a site disallows is skipped, never bypassed.

Detections are returned as **category-normalized CRM account columns** with the marker each was detected from (evidence) and a confidence.

Difference from a Wappalyzer replacement: normalized account attributes, not a raw signature dump.

### How it works

For each domain supplied, the actor runs a **robots preflight on every page it wants to read**.
Allowed pages are fetched from the company's own site; disallowed pages are skipped and recorded
in `robots_skipped`. Each record reports a `status`:

- `ok` — data was found (this is the only status that bills)
- `no_data` — the site was reachable but nothing matched
- `robots_blocked` — the page(s) needed were disallowed by robots.txt (skipped, never bypassed)
- `unreachable` — the site did not respond

A domain that is robots-blocked, unreachable, or yields no data is delivered as a record for
your visibility but **bills nothing**. If every supplied domain is unreachable, the run fails
loudly (an egress outage is never delivered as an empty success).

### Input

- `domains` — the list of company domains or homepage URLs to enrich
- `maxRecords` — a cap on how many domains are processed this run
- `userAgent` — optional override for the identified contact User-Agent

### Pricing

| Event | FREE | BRONZE | SILVER | GOLD+ |
|---|---|---|---|---|
| `apify-actor-start` (one-time actor start) | $0.02 | $0.02 | $0.02 | $0.02 |
| `techstack_record` (per domain enriched with data) | $0.05 | $0.045 | $0.04 | $0.0335 |

You are charged once per domain that returns data (`status: ok`). The one-time start fee is
$0.02. Robots-blocked, unreachable, and no-data domains are never billed; a total outage
charges nothing.

# Actor input Schema

## `domains` (type: `array`):

Company domains or homepage URLs to enrich (one CRM-ready record each). Robots is honoured per domain.

## `maxRecords` (type: `integer`):

Upper bound on domains processed this run (a buyer-requested cap).

## `userAgent` (type: `string`):

Optional override for the identified contact User-Agent.

## Actor input object example

```json
{
  "domains": [
    "vercel.com",
    "stripe.com"
  ],
  "maxRecords": 100
}
```

# 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 = {
    "domains": [
        "vercel.com",
        "stripe.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("nexgenwatch/tech-stack-enricher").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 = { "domains": [
        "vercel.com",
        "stripe.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("nexgenwatch/tech-stack-enricher").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 '{
  "domains": [
    "vercel.com",
    "stripe.com"
  ]
}' |
apify call nexgenwatch/tech-stack-enricher --silent --output-dataset

```

## MCP server setup

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

```

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/Lyb4AJyj079zkiAQU/builds/g3Z4mRmEuCQojjaYJ/openapi.json