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Tech Detect — Website Technology Stack Fingerprinting
x402
Tech Detect — Website Technology Stack Fingerprinting is a paid API for AI agents from stack.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-11).
Analyzes a domain URL and returns the full technology stack with confidence scores and evidence, paid per-call in USDC via 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 list of detected technologies, each with a name, category (e.g. web-server, CDN, CMS, analytics), version (if detectable), confidence score, and supporting evidence. The response covers the full observable stack for the submitted domain URL.
Example use cases
Competitor tech stack audit
“I want to know exactly what technologies my competitor shopify.com is using — CMS, hosting, frontend frameworks, analytics, everything — with confidence and evidence for each one.”
Sales lead tech qualification
“Before we reach out to stripe.com as a sales prospect, can you detect their full technology stack so I know what tools they're already using and whether our product would fit?”
Incremental stack change monitoring
“I scanned github.com last week and found they were using Nginx and React — can you re-scan them now and tell me if anything has changed in their tech stack since then? Here's the previous snapshot: observed_at 2024-06-01T00:00:00Z, technologies: [{name: Nginx, category: web-server, version: null}, {name: React, category: javascript-framework, version: null}].”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/openresty?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need per-call, no-signup technology fingerprinting with confidence and evidence metadata, especially in agent workflows where pay-as-you-go USDC billing via x402 is preferred over subscription API keys. Ideal for competitive intelligence, sales enrichment, or monitoring pipelines that need structured stack data rather than raw HTML scraping.
Side effects
- Unresolvable or unreachable domain returns no technologies or an error
- Private/intranet domains not accessible from the scanner return empty results
- Rate limiting or payment failure via x402 causes a 402 Payment Required response
- Obfuscated or heavily proxied sites may yield low-confidence or incomplete results
- Malformed URL input triggers 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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