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Tech Detect — Website Technology Stack Detection
x402
Tech Detect — Website Technology Stack Detection is a paid API for AI agents from stack.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-09).
Detects the technology stack of a given domain URL, returning each identified technology with confidence scores and evidence, billed per call in USDC via x402.
Price / call$0.004
Success—
StatusUnknown
How this service works
Domain in, technology stack out. Confidence and evidence for every hit. Pay per call in USDC over x402. No signup, no API key.
Output
Returns a list of detected technologies for the given domain, each with a name, category (e.g. 'JavaScript Framework', 'CDN', 'CMS'), version (if detectable), confidence score, and evidence supporting the detection. The response covers the full observable technology stack from frontend libraries to hosting infrastructure.
Example use cases
Competitor tech stack audit
“What frontend and backend technologies is notion.so using right now? I want confidence scores and evidence for every technology you detect.”
Sales intelligence enrichment
“Scan stripe.com and tell me what CMS, analytics, and JavaScript frameworks they're using — I need this for a sales call.”
Change monitoring for client site
“Check what technologies acme.com is running today — I last saw them using Alpine.js, WordPress, and Cloudflare. Tell me if anything has changed since then.”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/alpinejs?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, evidence-backed technology detection with per-technology confidence scores, without requiring account registration or API keys. It is especially well-suited for pay-as-you-go agent workflows where you want frictionless USDC micro-payments via x402. The optional `previous` field makes it ideal for change-detection scenarios where you want to diff against a prior scan.
Side effects
- URL is unreachable or returns non-200 — detection may be incomplete or return empty results
- Domain has bot-detection or blocks headless crawlers — reduces detection coverage
- URL input exceeds 2048 characters — rejected with validation error
- Previous technologies array exceeds 150 items — rejected with schema error
- Payment failure or insufficient USDC balance via x402 — call not executed
- Private or intranet domains not accessible from the scanner's origin — no results returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| previous | object |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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