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Tech Detect — Web Technology Stack Detection via x402
x402
Tech Detect — Web Technology Stack Detection 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 2026-10-13).
Detects the technology stack of a given domain URL, returning identified technologies 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. CMS, CDN, JavaScript framework), version if detectable, confidence score, and supporting evidence. May also indicate technologies that were previously observed but are no longer present when a prior snapshot is provided.
Example use cases
Competitor tech stack audit
“I want to know exactly what technologies stripe.com is built on — CMS, frontend frameworks, CDN, payment tools, analytics — with how confident you are for each one.”
Recurring stack change monitoring
“Scan shopify.com for its current technology stack and compare it against this snapshot from last week to see if anything has changed.”
Sales lead technology profiling
“I'm prospecting a new client at acmecorp.com — can you detect what tech stack their website is running so I know what tools they already use before my call?”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/contao?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need no-signup, pay-per-call technology fingerprinting of a web domain without committing to a subscription. It is ideal for one-off scans, agent-driven competitive intelligence pipelines, or change detection workflows where you supply a previous snapshot. Prefer it over traditional Wappalyzer-style SaaS tools when you want programmable, cryptographically-settled per-call billing via x402 and USDC.
Side effects
- Invalid or unreachable URL returns an error or empty technology list
- Payment failure over x402 results in 402 response and no data returned
- Domain with aggressive bot-blocking may yield incomplete or low-confidence results
- Malformed 'previous' snapshot object causes validation error
- Rate limiting or timeout on the target domain may reduce detection accuracy
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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