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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 2026-10-13).
Detects the technology stack used by a given domain, 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 list of detected technologies for the given domain, each with its name, category (e.g. web server, JavaScript framework, CDN), version where detectable, confidence score, and supporting evidence. The response enables understanding of the full technology fingerprint of the target site.
Example use cases
Competitive tech stack research
“I want to know what technology stack my competitor shopify.com is using — CMS, frontend framework, CDN, payment tools, anything you can detect with confidence scores.”
Security audit pre-check
“Before our pentest engagement, can you fingerprint the tech stack at targetclient.com so we know what servers and frameworks to focus on?”
Track stack changes over time
“Last week you detected that acme.com was using nginx 1.18 and React 17 — can you re-scan it now and tell me if anything has changed?”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/nginx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need on-demand, per-call technology stack detection without committing to a subscription or API key. It is especially useful for agents that need occasional or sporadic fingerprinting across many different domains, or when integrating technology detection into a larger automated pipeline where pay-per-use economics are preferable. The optional 'previous' field makes it particularly suited for change-detection workflows where you want to diff the current stack against a prior observation.
Side effects
- URL is unreachable or returns non-HTTP response — detection may fail or return empty results
- Domain uses heavy obfuscation or bot protection — lower confidence scores or missed technologies
- Malformed URL input — validation error returned
- Payment failure over x402 — request rejected before scan is performed
- Rate limiting or timeout on 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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