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Tech Detect — Pay-Per-Call Technology Stack Detection
x402
Tech Detect — Pay-Per-Call 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 2026-10-12).
Detects the technology stack of a given domain URL, returning confidence scores and evidence for each identified technology, paid 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 structured list of detected technologies for the given domain, each with a name, category (e.g. CMS, CDN, analytics), version if detectable, confidence score, and supporting evidence. Supports a 'previous' field for differential analysis against a prior snapshot.
Example use cases
Competitor technology stack audit
“Find out what technologies stripe.com is running — I want to know their frontend framework, CDN, analytics tools, and any payment or security tech, with confidence scores for each one.”
Detecting CMS and plugins for lead enrichment
“I'm building a list of prospects and I need to know if notion.so is running WordPress or any specific CMS — can you detect their tech stack and tell me what plugins or tools you find?”
Monitoring tech stack changes over time
“Last time I checked vercel.com it was using Next.js version 13 and Google Analytics. Can you scan it again now and tell me if anything in their stack has changed?”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/borlabs?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-as-you-go technology detection with no API key or account signup, billed per call in USDC via x402. It is especially useful for agents that need sporadic or one-off stack fingerprinting without committing to a subscription. The optional 'previous' field makes it well-suited for change detection workflows where you already have a prior snapshot of the site's stack.
Side effects
- Domain unreachable or returns no HTTP response — detection may return empty results
- URL exceeds 2048 characters — request rejected
- Invalid or malformed URL input — request rejected
- Payment failure via x402 — call not executed
- Technology obfuscated or behind heavy WAF — low confidence or missed detections
- Rate limits or blocks from the target domain — partial results
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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