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Nero Labs Tech Stack Detector
x402
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.
Price / call$0.005
Success—
StatusUnknown
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).
Example use cases
Lead qualification by ecommerce platform
“I have a list of 15 prospect websites and I only want to reach out to the ones using Shopify or BigCommerce — can you scan them all and filter down to just the matches, including what analytics tools they use?”
Competitor tech stack audit
“Can you analyse these 5 competitor websites and tell me everything about their tech stack — CMS, CDN, marketing automation, live chat, payment tools, and what email hosting they use based on DNS?”
Sales prospecting CRM detection
“Check these 20 company domains and tell me which ones are using HubSpot or Salesforce as their CRM — I want to qualify them before my outreach campaign.”
Technical details
Endpoint
POSThttps://x402-agent-tools.nerolabs.workers.dev/tech-stack?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keep | string | Which rows to write out. Every row is still checked and every analysed site is still charged; this only controls what is returned. |
| checkDns | boolean | 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 | array | Websites or bare domains to check, for example ["acme.com", "https://www.example.org"]. |
| matchMode | string | Whether a site must use any one of the listed technologies and categories, or all of them. |
| categories | array | Match any technology in these categories, for example 'Ecommerce' or 'Marketing automation'. |
| technologies | array | Exact technology names, for example 'Shopify', 'WordPress', 'WooCommerce', 'HubSpot', 'Klaviyo', 'Google Workspace' or 'Microsoft 365'. Matching ignores case. A name that is not in the fingerprint set is reported with suggestions and ignored. |
| minConfidence | integer | Drop detections below this confidence. Each technology comes with a confidence score; one seen only inside an inline loader script scores 75, and implied technologies inherit a lower score. |
Output
Schema · Response
{
"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."
}
}Tags
x402
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