# Website Technology Detector

> Website Technology Detector is a paid API for AI agents from x402-zoo.lolagent.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Detects web technologies used by a public webpage by analyzing its HTTP response headers and HTML signatures.

## Facts

- Endpoint: GET https://x402-zoo.lolagent.workers.dev/api/website-tech
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/website-technology-detector-5ac1a8b7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_n5nhw9eJjEpZJdq5wqyMd

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 website-technology-detector-5ac1a8b7
```

Example prompt: Can you detect what web technologies and frameworks are powering https://www.shopify.com — like what CMS, server, or JavaScript frameworks they're using?

## When to prefer this

Use this endpoint when you need a lightweight, cost-effective way to fingerprint a public website's technology stack without running a full crawl or browser automation. Ideal for competitive intelligence, pre-sales research, or automated audits where you need quick tech detection from headers and HTML alone. Prefer this over browser-based alternatives when speed and low cost matter more than deep JS-rendered detection.

## Known failure modes

- Target URL is not publicly accessible or returns a non-200 status
- Website blocks bot user agents or returns minimal headers, reducing detection accuracy
- HTTPS/TLS issues on the target site prevent fetching
- Missing or empty `url` query parameter causes a validation error
- Detection limited to signature-based heuristics — some technologies may go undetected if they leave no fingerprint

## How this service works

Detect likely web technologies from a public page response headers and HTML signatures.

## Output

Returns a list of detected web technologies inferred from HTTP response headers and HTML signatures of the target page, typically including server software, CMS platforms, JavaScript frameworks, CDN providers, analytics tools, and other detectable stack components.

## 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"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/website-technology-detector-5ac1a8b7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-zoo.lolagent.workers.dev](https://www.zero.xyz/host/x402-zoo.lolagent.workers.dev/llms.txt)