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PapaCasper Tech Stack Fingerprint
x402
PapaCasper Tech Stack Fingerprint is a paid API for AI agents from papacasper.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Analyzes a given URL and identifies the underlying technologies, frameworks, and services powering that website.
Price / call$0.01
Success—
StatusUnknown
How this service works
A hosted MCP server exposing utility tools any AI agent can call over HTTP — page-to-markdown, SEO audits, robots/sitemap checks, and more.
Output
A structured object describing the detected technologies powering the given URL, which may include frontend frameworks (e.g. React, Vue, Next.js), CMS platforms (e.g. WordPress, Shopify), CDN providers, server software, analytics tools, advertising pixels, and other third-party services identified via HTTP headers, HTML patterns, and script analysis.
Example use cases
Competitive tech stack research
“What technologies is my competitor's website stripe.com running on? I want to know their frontend framework, backend, CDN, and any analytics tools.”
Sales prospecting enrichment
“Before my sales call, can you figure out what CMS and ecommerce platform https://example-retailer.com is using so I know what integrations to pitch?”
Security and infrastructure audit
“Fingerprint https://mybusiness.com and tell me what server software, JavaScript libraries, and third-party services are exposed so I can audit our tech footprint.”
Technical details
Endpoint
POSThttps://papacasper.com/mcp/pay/tech_stack_fingerprintWhen to prefer
Choose this endpoint when you need to identify the technology stack of any publicly accessible website without setting up your own scraping infrastructure. It is particularly useful for competitive intelligence, sales prospecting enrichment, pre-audit research, or any workflow where knowing a site's CMS, framework, or third-party services is required. At $0.0002 per call it is extremely cost-effective for bulk or single-site lookups via an agent-friendly HTTP API with x402 micropayment support.
Side effects
- URL is unreachable or returns a non-200 status — endpoint may return an error or empty result
- Private/intranet URLs that are not publicly accessible cannot be fingerprinted
- Heavily obfuscated or minified sites may yield incomplete or inaccurate technology detection
- Rate limiting or bot protection on the target site may block fingerprinting attempts
- Malformed URL input will result in a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | The URL to fingerprint |
Output
Schema · Response
{
"type": "object"
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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