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Tech Detect — Technology Stack Detection for a Domain
x402
Tech Detect — Technology Stack Detection for a Domain 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 (frameworks, libraries, services) used by a given domain URL, returning confidence scores and evidence for each detected technology, with optional delta comparison against a previously observed stack.
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. CDN, JavaScript framework, CMS), version where detectable, a confidence score, and supporting evidence. Optionally highlights changes relative to a previously observed snapshot.
Example use cases
Competitive tech stack audit
“What technologies is our competitor linear.app using? I want to know their frameworks, analytics tools, CDN, and any error-monitoring services — with confidence scores for each.”
Monitor stack changes over time
“Last week you found that stripe.com was using React and Cloudflare. Can you scan it again and tell me if anything in their tech stack has changed since then?”
Security and vendor discovery
“I need to know what third-party services and tracking tools are loaded on shopify.com — things like error trackers, A/B testing platforms, or payment processors.”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/sentry?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured, evidence-backed technology fingerprinting of a public-facing domain without managing API keys or subscriptions. Ideal for one-off competitive audits, automated stack monitoring pipelines, or security research where pay-per-call USDC billing over x402 is preferred over monthly SaaS plans. The optional 'previous' snapshot parameter makes it especially useful for change-detection workflows.
Side effects
- Domain is unreachable or returns non-200 — stack detection may return empty or partial results
- Private/intranet domains not accessible from the scanner will yield no results
- Obfuscated or minified assets may reduce detection confidence
- Rate of technology coverage varies by site complexity — some stacks are inherently harder to fingerprint
- Malformed URL input returns a 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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