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Tech Detect — Website Technology Stack Detector
x402
Tech Detect — Website Technology Stack Detector 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 a given domain/URL, returning each identified technology with confidence scores and supporting evidence.
Price / call$0.004
Success—
StatusUnknown
How this service works
Purpose-bound Bunny Fonts observation (fonts) using the existing fresh Stack-Monitor. Returns stack_bunny_fonts_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 technologies; 9s timeout.
Output
Returns a list of detected technologies for the given domain, each with a name, category (e.g. CDN, CMS, JavaScript framework), version if detectable, confidence score, and evidence supporting the detection. May optionally diff against previously observed technologies to highlight changes.
Example use cases
Competitor tech stack audit
“I want to know what technologies Shopify's main site is running — frameworks, analytics, payment systems, everything — with confidence scores so I know how reliable the findings are.”
Monitor rival's stack for changes
“Check acme.io for their current tech stack — I already know they were running Next.js and Cloudflare as of 2024-01-15, so flag anything that's changed or newly detected since then.”
Sales lead enrichment for SaaS targeting
“Before our sales call, can you figure out what CMS and marketing automation tools hubspot.com is using? I need the technology names, categories, and how confident you are in each hit.”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/bunny-fonts?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, confidence-annotated technology fingerprinting for any public-facing domain, especially in a pay-per-call context without needing API keys or subscriptions. It is particularly well-suited for agents doing competitive intelligence, lead enrichment, or monitoring tech stack drift over time, thanks to the optional 'previous' field for diffing against a known baseline.
Side effects
- Domain unreachable or returns non-200 — no technologies detected
- Private or behind-auth pages may yield incomplete results
- Low-confidence detections for heavily obfuscated or custom-built stacks
- Invalid URL format causes request rejection
- Rate or payment issues over x402 result in 402 Payment Required response
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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