# Nero Labs Tech Stack Detector

> Nero Labs Tech Stack Detector is a paid API for AI agents from x402-agent-tools.nerolabs.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).

Detects the technology stack (CMS, ecommerce, analytics, CDN, payments, chat, etc.) behind up to 20 websites, with per-technology confidence scores and DNS-based service detection.

## Facts

- Endpoint: POST https://x402-agent-tools.nerolabs.workers.dev/tech-stack?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nero-labs-tech-stack-detector-41b12124
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GOYdVWuighz-q8G9CczVd

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability nero-labs-tech-stack-detector-41b12124 -d '<json body>'
```

Example prompt: Can you check these 10 domains — acme.com, widgetco.io, and 8 others from my list — and tell me which ones are running Shopify or WooCommerce, including any analytics or live chat tools you find? Return only the ones that match.

## When to prefer this

Choose this endpoint when you need to identify the technology stack of multiple websites in bulk for sales prospecting, lead qualification, or competitive research — especially when you need DNS-based service detection (email hosting, verified services) alongside page-level tech fingerprinting. Prefer it over single-site manual inspection tools when processing batches of up to 20 domains at once with structured, filterable output per site.

## Known failure modes

- Website is unreachable or returns non-200 status — row returned with techStatus error and detail
- Domain has no detectable technologies — row returned with empty/null technology fields
- Invalid URL format in input — may cause row-level error or be skipped
- DNS check fails for a domain — DNS-based detections (email hosting, verified services) absent for that row
- Exceeding 20 websites per call — request rejected or truncated
- Network timeout on slow sites — techStatus may reflect timeout error

## How this service works

Pay-per-call tools for AI agents, 31 in all: read web pages and RSS feeds, OCR, PDF text, transcription; email, phone and domain checks; UK, Irish and Polish company lookups and UK risk reports; website contacts, tech stack and SEO audits; PageSpeed; AI review, job post and row enrichment; data cleaning, joins, dedupe and diffs; US and EU compliance rules. No account or API key: pay each call in USDC on Base over x402.

## Output

Returns an array of rows, one per website checked, each containing: detected CMS, ecommerce platform, CRM, analytics tools, marketing automation, full list of technology names and count, page title, page size in KB, tech domain, and a status field indicating if detection succeeded. Undetected categories return null. Filtered by the 'keep' parameter (all, matching, detected, or problems).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "keep": {
   "enum": [
    "all",
    "matching",
    "detected",
    "problems"
   ],
   "type": "string",
   "default": "all",
   "description": "Which rows to write out. Every row is still checked and every analysed site is still charged; this only controls what is returned."
  },
  "checkDns": {
   "type": "boolean",
   "default": true,
   "description": "ON by default. Reads the domain's MX, TXT, NS and SOA records, which is how email hosting (Google Workspace, Microsoft 365), email sending services and DNS providers are detected, and which services the company has verified its domain with. No extra charge."
  },
  "websites": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Websites or bare domains to check, for example [\"acme.com\", \"https://www.example.org\"]."
  },
  "matchMode": {
   "enum": [
    "any",
    "all"
   ],
   "type": "string",
   "default": "any",
   "description": "Whether a site must use any one of the listed technologies and categories, or all of them."
  },
  "categories": {
   "type": "array",
   "items": {
    "enum": [
     "A/B Testing",
     "Accessibility",
     "Accounting",
     "Advertising",
     "Affiliate programs",
     "Analytics",
     "Appointment scheduling",
     "Artificial Intelligence",
     "Augmented reality",
     "Authentication",
     "Blogs",
     "Browser fingerprinting",
     "Buy now pay later",
     "Caching",
     "Cart abandonment",
     "CDN",
     "CI",
     "CMS",
     "Comment systems",
     "Containers",
     "Content curation",
     "Control systems",
     "Cookie compliance",
     "CRM",
     "Cross border ecommerce",
     "Cryptominers",
     "Customer data platform",
     "Database managers",
     "Databases",
     "Development",
     "Digital asset management",
     "DMS",
     "Documentation",
     "Domain parking",
     "Drupal themes",
     "Ecommerce",
     "Ecommerce frontends",
     "Editors",
     "Email",
     "Feature management",
     "Feed readers",
     "Font scripts",
     "Form builders",
     "Fulfilment",
     "Fundraising & donations",
     "Geolocation",
     "Hosting",
     "Hosting panels",
     "IaaS",
     "Issue trackers",
     "JavaScript frameworks",
     "JavaScript graphics",
     "JavaScript libraries",
     "Live chat",
     "Livestreaming",
     "LMS",
     "Load balancers",
     "Loyalty & rewards",
     "Maps",
     "Marketing automation",
     "Media servers",
     "Message boards
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "rows": [
   {
    "cms": "WordPress, WordPress Block Editor, WordPress Site Editor",
    "crm": null,
    "website": "wordpress.org",
    "analytics": null,
    "pageTitle": "Blog Tool, Publishing Platform, and CMS – WordPress.org",
    "pageSizeKb": 173,
    "techDomain": "wordpress.org",
    "techStatus": "ok",
    "techWebsite": "https://wordpress.org/",
    "technologyCount": 9,
    "technologyNames": "WordPress, WordPress Block Editor, WordPress Site Editor, Gutenberg, MySQL, PHP, Nginx, Google Font ...",
    "techStatusDetail": null,
    "ecommercePlatform": null,
    "marketingAutomation": null
   }
  ],
  "count": 1,
  "_example_note": "Real output, trimmed: long lists cut to their first items, fields and text shortened."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nero-labs-tech-stack-detector-41b12124/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent-tools.nerolabs.workers.dev](https://www.zero.xyz/host/x402-agent-tools.nerolabs.workers.dev/llms.txt)