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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).
Analyzes a website domain and returns its detected technology stack with confidence scores and supporting evidence for each technology found.
Price / call$0.004
Success—
StatusUnknown
How this service works
Purpose-bound GitHub Pages observation (hosting) using the existing fresh Stack-Monitor. Returns stack_github_pages_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 time
Output
Returns a structured list of detected technologies on the given domain, each with a name, category (e.g. CMS, CDN, JavaScript framework, analytics), version if detectable, confidence score, and evidence supporting the detection. Also indicates which technologies are new or changed relative to a previously observed snapshot if one was provided.
Example use cases
Competitive tech stack research
“I'm researching competitors in the SaaS space — can you detect the full technology stack for notion.so and tell me what frontend framework, backend signals, and analytics tools they're using, with confidence scores?”
Monitoring site tech stack changes
“Check the tech stack on acme-store.com right now — last time I looked on 2024-11-01 it was running Shopify and Google Analytics. Have they switched anything since then?”
Lead enrichment for dev tool sales
“I have a prospect at linear.app — can you detect their technology stack so I know which tools they're already using before I reach out to pitch our developer product?”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/github-pages?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-call, no-signup technology fingerprinting of a web domain — especially in automated pipelines where you don't want to manage API keys. The optional 'previous' field makes it especially useful for change-detection workflows, letting you diff the current stack against a prior observation. Prefer this over browser-based tools like Wappalyzer when you need structured, machine-readable output with confidence scores suitable for downstream agent reasoning.
Side effects
- Unresolvable or offline domain returns an error or empty results
- Heavily obfuscated or behind-WAF sites may yield low confidence or incomplete detections
- Version detection may be null if the site does not expose version signals
- Passing a malformed URL (non-string or over 2048 chars) triggers a validation error
- Payment failure via x402 results in a 402 response before any detection is attempted
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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