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Tech Detect — Web Technology Stack Detection
x402
Tech Detect — Web 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).
Analyzes a given URL/domain and returns a full technology stack fingerprint with confidence scores and evidence for each detected technology.
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 its name, category (e.g. JavaScript framework, CDN, CMS), version if detectable, a confidence score, and supporting evidence. Optionally highlights changes relative to a previously observed snapshot.
Example use cases
Competitor tech stack audit
“I want to know exactly what technology stack shopify.com is running — frontend frameworks, backend signals, analytics, payment tools, anything you can detect, with how confident you are for each one.”
Monitor site for stack changes
“Scan notion.so for its current tech stack and compare it against what we saw last month — I'll give you the previous snapshot: observed on 2024-06-01, they were running React 18, Next.js 14, and Segment. Tell me what's changed.”
Pre-sales technology qualification
“Before our sales call, can you quickly check what CMS and marketing tools hubspot.com is using? I need to know if they're on WordPress or something custom, and what analytics or A/B testing tools they have.”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/jquery-ui?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-as-you-go, no-signup technology fingerprinting call paid in USDC via x402, especially useful for ad-hoc agent workflows, competitive research pipelines, or change-detection loops where you pass a previous snapshot to identify drift. Prefer over subscription-based alternatives when call volume is low or unpredictable.
Side effects
- Domain is unreachable or returns non-200 — detection may be incomplete or empty
- Private/intranet URLs cannot be scanned — returns no results
- JavaScript-heavy SPAs may not expose all server-side stack signals
- Some technologies obfuscate version numbers — version field may be null
- Rate-limiting or bot-protection on target site may reduce signal quality
- Payment failure over x402 — call not processed
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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