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SiteCheck Tech Stack Detection
x402
SiteCheck Tech Stack Detection is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-12).
Detects the technologies, CDN, CMS, analytics, e-commerce platform, and email provider used by any website via static analysis of its HTML, headers, cookies, and DNS records.
Price / call$0.003
Success—
StatusUnknown
How this service works
Pay-per-call tools for AI agents: image generation, speech-to-text, text-to-speech, embeddings, LLM chat, website audits and contact enrichment, web page to Markdown reader, PDF to text, sitemap URLs, tech stack detection, translation, exchange rates, e-mail pre-check, domain RDAP/DNS lookup, Solana token checks, trending tokens and wallet holdings, plus business and compliance data (EU VAT/VIES, IBAN, LEI/GLEIF, US recalls, OSHA/EPA violations, UK insolvency notices). Plus prediction-market search, briefs, quotes and unsigned buy transactions, powered by Panta. Payment: x402, USDC on Base, Solana or Arc. No signup, no API key.
Output
Returns a JSON object containing the detected CDN, CMS, analytics tools, e-commerce platform, tag managers, email provider, and a full list of individual technologies with names, versions, categories, evidence snippets, and confidence scores. Also includes the resolved final URL, HTTP status code, domain, total technology count, and a note that analysis is based on static markup, headers, cookies, and DNS (no JavaScript execution).
Example use cases
Competitor tech stack research
“Can you check what technologies acme.com is built on? I want to know their CMS, CDN, analytics tools, and e-commerce platform.”
Sales prospecting enrichment
“Before I reach out to this lead, can you tell me what e-commerce platform and email provider stripe.com is using?”
Security audit pre-screening
“I'm auditing webflow.com — can you detect their full tech stack including CDN, tag managers, and any analytics tools running on the site?”
Technical details
Endpoint
GEThttps://api.sitecheck-api.workers.dev/api/tech?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, no-auth, pay-per-call technology fingerprint of any public website without running a browser or JavaScript. It's ideal for competitive intelligence, sales prospecting enrichment, or pre-audit recon where you need CDN, CMS, analytics, e-commerce platform, and email provider in a single call. Prefer this over full browser-based crawlers when speed and cost matter and the target site's tech stack is detectable from static signals.
Side effects
- Website blocks crawlers or returns a non-200 status, resulting in a 'blocked' field being set
- Domain does not resolve or is unreachable, causing a failed lookup
- Technology not detectable from static HTML/headers alone (requires JS execution), so dynamic frameworks may be missed
- Incorrect URL format supplied causes a validation error
- Rate limiting or upstream timeouts on heavily loaded sites
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"cdn": [
"Cloudflare"
],
"cms": null,
"url": "https://shopify.com/",
"note": "Home page markup, headers, cookies and DNS (MX, TXT) only; no JavaScript is run.",
"count": 14,
"domain": "shopify.com",
"status": 200,
"blocked": null,
"hosting": [],
"finalUrl": "https://www.shopify.com/",
"analytics": [
"Google Analytics"
],
"ecommerce": "Shopify",
"tagManagers": [
"Google Tag Manager"
],
"technologies": [
{
"name": "Shopify",
"version": null,
"category": "Ecommerce",
"evidence": [
"url https://cdn.shopify.com/s/files/..."
],
"confidence": 97
}
],
"emailProvider": "Google Workspace"
}
}Tags
x402
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