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Tech Detect — Web Technology Stack Fingerprinting via x402
x402
Tech Detect — Web Technology Stack Fingerprinting via x402 is a paid API for AI agents from stack.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-12).
Detects the full technology stack of a given domain URL, returning identified technologies with confidence scores and evidence, billed per call in USDC over 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 submitted URL, each with a name, category (e.g. JavaScript framework, CDN, CMS), version if detectable, a confidence score, and supporting evidence. May also include metadata about the scan such as observed timestamp.
Example use cases
Competitor tech stack reconnaissance
“Can you detect the full technology stack for shopify.com? I want to know their frontend framework, CDN, analytics tools, and anything else you can identify with confidence scores.”
Monitoring a site for stack changes
“Scan linear.app for its current technology stack — I last checked it on 2024-11-01 and found it was using React and Cloudflare. Let me know if anything has changed or if there are new additions.”
Verifying htmx adoption on a known site
“Check whether htmx.org is actually using htmx itself, and tell me what other technologies you can detect on that domain — I want to see the full stack with confidence levels.”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/htmx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need per-call, no-signup technology fingerprinting with structured confidence scores and evidence, payable in USDC. Ideal for agents that need to scan arbitrary domains on demand without managing API keys. Prefer over bulk/subscription scanning services when call volume is low or unpredictable, and over manual inspection when automation or structured output is required.
Side effects
- URL is unreachable or returns non-200 — scan may fail or return empty results
- Domain has bot-blocking or WAF that prevents fingerprinting — reduced detection coverage
- Malformed URL input — validation error returned
- Payment via x402 fails or is insufficient — request rejected before scan runs
- Site uses heavy obfuscation or custom stack — low confidence scores or no detections
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| previous | object |
Tags
x402
Reviews
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