# SiteCheck Tech Stack Detection

> 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.

## Facts

- Endpoint: GET https://api.sitecheck-api.workers.dev/api/tech?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-tech-stack-detection-0ea00c3e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kSSUN4A6ZfLTpolvWKmMA

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 sitecheck-tech-stack-detection-0ea00c3e
```

Example prompt: What tech stack is shopify.com running on — CMS, CDN, analytics tools, e-commerce platform, and email provider?

## When to prefer this

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.

## Known failure modes

- 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

## 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).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Website URL or domain, e.g. example.com"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-tech-stack-detection-0ea00c3e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)