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AgentShelf modulepreload Link Extractor
x402
AgentShelf modulepreload Link Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-23).
Extracts all link[rel=modulepreload] href values from a public webpage URL or raw HTML, with SSRF protection.
Price / call$0.008
Success—
StatusUnknown
How this service works
Call when an agent needs link rel=modulepreload hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/profile-rel-modulepreload first.
Output
A list of href values found in link[rel=modulepreload] elements on the target page or within the provided HTML. Typically returns an array of URLs or paths pointing to JavaScript module resources that the page declares for preloading.
Example use cases
Audit site module preloading strategy
“Go to https://shop.acme.com and extract every link[rel=modulepreload] href so I can audit which JS modules they're preloading on the homepage.”
Analyze competitor frontend bundle hints
“I have the HTML for https://competitor.io/app — can you parse it and give me a list of all the modulepreload hrefs it declares?”
Verify modulepreload tags in static HTML
“Here's a chunk of HTML I generated: <link rel='modulepreload' href='/dist/main.js'>... can you extract all the modulepreload hrefs from it to confirm the right files are listed?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/profile-rel-modulepreload?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically identify all modulepreload link hints declared on a public webpage or within raw HTML, particularly for auditing frontend performance strategies, analyzing JavaScript module bundling, or verifying preload declarations. Prefer the free sandbox endpoint (/v1/sandbox/profile-rel-modulepreload) for testing. Use this paid endpoint for production workloads requiring SSRF-safe fetching of live URLs.
Side effects
- URL is unreachable or returns non-200 status — endpoint may return an error or empty result
- SSRF-blocked URLs (private IP ranges, localhost) will be rejected for security reasons
- HTML exceeds 200,000 character limit — request will be rejected
- URL string shorter than 8 characters or longer than 2048 characters — validation error
- Page has no link[rel=modulepreload] elements — returns empty list
- Payment of $0.008 USDC not provided or rejected — 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public page to fetch. The selector or profile is fixed by the SKU. Provide url or html. |
| html | string | HTML to extract from locally. Provide html or url. When both are set, html is used. |
Tags
x402
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