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agent402.tools HTML Link Extractor
x402
agent402.tools HTML Link Extractor is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Enumerates all hyperlinks in an HTML string, returning each href, anchor text, and rel attribute, with optional base URL resolution and regex filtering.
Price / call$0.001
Success—
StatusUnknown
How this service works
Enumerate every <a href> in an HTML string with its anchor text and rel attribute. Optionally resolves relative hrefs against a base URL and filters by a regex on the href. The deterministic way to crawl a page's outlinks without writing a regex.
Output
A list of up to 1000 unique hyperlinks found in the HTML, each with its resolved href, anchor text, and rel attribute value, filtered by any provided regex pattern.
Example use cases
Example prompt
“Pull out every link from this HTML and resolve relative hrefs against https://example.com — only return links matching the regex ^https://example\.com/blog, deduplicated, up to 100 results.”
Technical details
Endpoint
POSThttps://agent402.tools/api/html-linksWhen to prefer
Use this endpoint when you have raw HTML and need a deterministic, structured list of all outlinks without writing custom regex or DOM parsing code. Ideal for crawling pipelines, link audits, or sitemap extraction where you need href, anchor text, and rel attributes together with optional filtering and relative URL resolution.
Side effects
- HTML string exceeds 5MB limit — returns error
- Invalid regex pattern in filter field — returns parse error
- Malformed base URL — relative hrefs may not resolve correctly
- limit out of range (not 1-1000) — returns validation error
- Empty HTML string — returns empty link list
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| base | string | Optional base URL to resolve relative hrefs against |
| html | string | Raw HTML string to scan (max 5MB) |
| limit | number | Max links to return, 1-1000 (default 200) |
| filter | string | Optional regex applied to the href - only matching links are returned |
| unique | boolean | Deduplicate by href (default true) |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 2,
"links": [
{
"rel": "",
"href": "https://agent402.tools/about",
"text": "About"
},
{
"rel": "",
"href": "https://example.com/",
"text": "External"
}
]
}
}Tags
x402
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