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Tech Detect — Technology Stack Detection via x402
x402
Tech Detect — 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 2026-10-12).
Detects and identifies the technology stack of a given domain/URL, returning confidence scores and evidence for each detected technology, 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 given domain, each with a name, category (e.g. CMS, CDN, analytics, framework), version if detectable, confidence score, and supporting evidence. The GTM endpoint variant is focused on detecting Google Tag Manager and related marketing/tracking technologies.
Example use cases
Competitive tech stack research
“What technologies is shopify.com using right now? I want to know their frontend framework, CDN, analytics tools, and any marketing automation — with confidence scores for each hit.”
Sales intelligence enrichment
“I'm prospecting acmecorp.com — can you detect what CRM, marketing automation, and ecommerce platforms they're running so I can tailor my pitch?”
Change monitoring for a known stack
“Last month I saw that stripe.com was using React, Next.js, and Segment. Can you re-scan it now and tell me if anything has changed or if new technologies have been added?”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/gtm?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-as-you-go technology stack detection with no API key or signup required, especially for one-off lookups or agent workflows where billing via x402/USDC micropayments is acceptable. Ideal for competitive intelligence, sales enrichment, or monitoring tech stack changes on specific domains. The GTM path variant is optimized for detecting tag management and marketing tracking technologies.
Side effects
- Domain unreachable or returns non-200 — detection may be incomplete or fail entirely
- Private/intranet domains return no results
- Heavily obfuscated or minified code reduces detection confidence
- Rate limiting or bot protection on target domain may block fingerprinting
- Invalid URL format returns a validation error
- Previously-observed technologies object malformed causes request rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| previous | object |
Tags
x402
Reviews
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