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AgentShelf Tech Hints – Response Header & HTML Stack Fingerprinting
x402
AgentShelf Tech Hints – Response Header & HTML Stack Fingerprinting is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-01).
Fetches lightweight technology stack hints for a given URL by inspecting HTTP response headers and HTML meta signals (generator tags, x-powered-by, analytics booleans, fingerprints) without running a browser.
Price / call$0.008
Success—
StatusUnknown
How this service works
Call when an agent needs lightweight stack hints from response headers + HTML (generator, x-powered-by, fingerprints, analytics booleans). No browser. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/tech-hints first.
Output
Returns lightweight technology stack hints derived from HTTP response headers and HTML meta elements, including detected generator tags, x-powered-by values, framework fingerprints, and boolean flags for detected analytics tools — all without requiring a headless browser.
Example use cases
Competitor tech stack discovery
“What technology is powering https://competitor-brand.com? I want to know the CMS, any frameworks showing in the headers or generator tag, and whether they're running analytics like GA.”
Sales lead enrichment for SaaS tool
“Before I reach out to this prospect, can you tell me what platform https://prospectco.io is built on based on its response headers and HTML signals?”
Security audit pre-check
“I'm doing a quick recon on https://targetsite.net — can you pull the tech fingerprints from its headers and HTML, like x-powered-by and any framework clues, without spinning up a browser?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/tech-hints?utm_source=zero.xyzWhen to prefer
Prefer this endpoint when you need fast, cheap technology stack detection for a URL without spinning up a headless browser — ideal for bulk lead enrichment, competitive research, or pre-audit recon where full JS rendering is unnecessary. At $0.008 USDC it is cost-effective for moderate volumes. Try the free POST /v1/sandbox/tech-hints first if available before paying.
Side effects
- URL unreachable or returns non-200 status — endpoint may return error or empty hints
- URL blocks automated HTTP clients (no user-agent spoofing) — limited or missing headers
- Site uses heavy client-side rendering — HTML hints may be sparse since no browser is used
- Malformed or too-short URL input (below 8 chars) — schema validation error
- Payment failure or insufficient USDC balance — 402 response blocking execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public http(s) URL to fetch. Private, localhost, link-local, and metadata hosts are rejected. |
Tags
x402
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