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Tech Detect — Website Technology Stack Fingerprinter
x402
Tech Detect — Website Technology Stack Fingerprinter 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 full technology stack of any website URL and returns each identified technology with confidence scores and evidence.
Price / call$0.004
Success—
StatusUnknown
How this service works
Purpose-bound Real Cookie Banner observation (consent) using the existing fresh Stack-Monitor. Returns stack_real_cookie_banner_decision, direct versus inferred status, evidence, optional version difference against a caller-owned baseline and reusable snapshot. Missing fingerprints do not prove absence. No background scheduling, CVE, compatibility or installed-extension inventory. Existing outbound safeguards remain in the injected motor. One public HTTPS root domain, up to150 baseline technolog
Output
Returns a list of detected technologies for the given URL, each with a name, category (e.g. CMS, JavaScript framework, analytics), version (if detectable), confidence score, and evidence indicating how the technology was identified. Optionally diffs against a previously observed technology snapshot to surface changes.
Example use cases
Competitive tech stack audit
“I want to know exactly what technology stack my competitor's site shopify.com is running — CMS, frontend framework, analytics, payment tools, all of it, with confidence levels for each.”
Lead enrichment for sales pipeline
“For each of these 10 SaaS company domains, figure out what technology stack they're using so I can filter for ones running Salesforce or HubSpot before my team reaches out.”
Monitoring a site for technology changes
“Check stripe.com's tech stack now and compare it against what I last saw on 2024-11-01 — highlight anything that's been added or removed since then.”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/real-cookie-banner?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need per-call, no-signup technology detection paid in USDC via x402 — ideal for agents that run ad hoc or infrequent scans without wanting to manage API keys or subscriptions. It also supports incremental diffing via the 'previous' parameter, making it well-suited for change-monitoring workflows. Prefer alternatives if you need bulk batch scanning at high volume where per-call pricing becomes prohibitive.
Side effects
- URL is unreachable or returns non-200 response — detection may be incomplete or fail entirely
- Private or behind-auth sites yield few or no detectable signals
- Obfuscated or minified assets may prevent version detection, returning null for version
- Overly generic CDN-proxied sites may produce low-confidence results
- Malformed URL input returns validation error
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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