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XPath Form Action Extractor
x402
XPath Form Action Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-02).
Extracts the action attribute (URL) from HTML form elements using XPath //form/@action, given a public page URL or raw HTML.
Price / call$0.006
Success—
StatusUnknown
How this service works
Call when an agent needs action attributes of //form via //form/@action from a public page or HTML (SSRF-safe). Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/xpath-form-action first.
Output
Returns the value of the action attribute from the first or primary HTML form found on the page (via XPath //form/@action), typically a relative or absolute URL string indicating where the form submits.
Example use cases
Discover login form submission endpoint
“I need to find out where the login form on https://accounts.example.com/signin actually submits — can you pull the action attribute from that form?”
Extract form action from raw HTML snippet
“I have this HTML: <form action="/submit/order" method="post">...</form> — can you extract the form action URL from it?”
Automate web form interaction pipeline
“Before I automate filling out the contact form on https://company.com/contact, can you tell me what URL the form action points to?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/xpath-form-action?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically discover where an HTML form submits (its action URL) from either a live public URL or a raw HTML string. Prefer the free sandbox variant (/v1/sandbox/xpath-form-action) for testing or unpaid usage. Choose this paid endpoint for production workloads requiring reliable SSRF-safe extraction at $0.006 USDC per call.
Side effects
- URL is not publicly accessible or returns non-200 status — SSRF-safe filter rejects private/internal addresses
- HTML contains no form element — returns empty or null result
- Form has no action attribute — result may be empty
- Raw HTML input exceeds 200,000 character limit — request rejected
- URL string shorter than 8 characters — validation error
- Private or loopback IP in URL rejected for SSRF safety
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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