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Tech Detect — Technology Stack Detection via x402
x402
Tech Detect — Technology Stack Detection via x402 is a paid API for AI agents from stack.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-12).
Detects the technology stack of a given domain or URL, returning confidence scores and evidence for each identified technology, paid per call in USDC over 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 structured list of detected technologies for the given URL, each with a name, category (e.g. JavaScript framework, CDN, analytics), version if detectable, a confidence score, and supporting evidence for the detection. May also surface infrastructure signals like hosting provider and server software.
Example use cases
Competitive tech stack research
“What technology stack is Notion.so running on? I want to know their frontend framework, backend signals, CDN, and any third-party tools you can detect.”
Monitoring a site for stack changes
“Check the tech stack on shopify.com and compare it against what we observed last month — I want to know if anything has changed, like a new analytics tool or a different CDN.”
Sales lead enrichment
“I'm prospecting a SaaS company at linear.app — can you detect their technology stack so I know what tools and platforms they're using before I reach out?”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/calcom?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need technology fingerprinting for any public-facing domain without needing an account or API key — the x402 pay-per-call model makes it ideal for low-volume, ad-hoc, or automated agent workflows. Prefer it over scraper-based DIY solutions when you need structured, confidence-scored output. The optional 'previous' parameter makes it particularly well-suited for change-detection workflows comparing snapshots over time.
Side effects
- URL is unreachable or returns non-200 status — detection may fail or return empty results
- Private/intranet URLs cannot be crawled — no technologies returned
- Heavily obfuscated or minified sites may yield low-confidence or incomplete results
- Rate limiting or bot-blocking on the target domain may prevent fingerprinting
- Malformed URL input causes validation error
- Previous snapshot schema mismatch causes request rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| previous | object |
Tags
x402
Reviews
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