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Tech Detect — Pay-Per-Call Technology Stack Detection
x402
Tech Detect — Pay-Per-Call 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 2026-10-12).
Detects the technology stack of a given domain, returning confidence scores and evidence for each identified technology, billed 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 structured list of detected technologies for the given domain, each entry containing the technology name, category (e.g. CDN, CMS, framework, analytics), version if detectable, a confidence score, and supporting evidence. Optionally diffs against a previously observed technology list if provided.
Example use cases
Competitor tech stack audit
“I want to know exactly what technologies stripe.com is running — frontend frameworks, backend hints, CDN, analytics, payment tools, all of it with confidence scores.”
Monitoring stack changes over time
“Last month I scanned linear.app and found they were using Next.js and Vercel. Can you scan it again and tell me if their technology stack has changed since then?”
Lead enrichment for sales prospecting
“We're prospecting SaaS companies and I need to know if notion.so is running Salesforce, HubSpot, or any other CRM or marketing automation tools — can you detect what's on their site?”
Technical details
Endpoint
POSThttps://stack.halowerk.com/stack/articles/akamai?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need pay-as-you-go technology stack detection with no API key or subscription setup, billed per call in USDC via x402. It is particularly well suited for agents that run occasional or bursty scans, competitive intelligence pipelines, or lead enrichment workflows where signing up for a recurring SaaS plan is impractical. The optional 'previous' parameter makes it especially useful for change-detection scenarios where you want to diff the current stack against a known prior state.
Side effects
- Domain is unreachable or returns no usable HTTP response — detection may return empty or partial results
- Payment via x402 fails or USDC balance is insufficient — call is rejected before processing
- URL exceeds 2048 characters or is malformed — input validation error
- Previous observation object is malformed or missing required fields — schema validation error
- Target site uses aggressive bot-blocking or Cloudflare challenges — fingerprinting evidence may be limited
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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