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CSS Form Action Extractor (SSRF-safe)
x402
CSS Form Action Extractor (SSRF-safe) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-02).
Extracts the form action URL from a public webpage or raw HTML using CSS selectors, with SSRF protection.
Price / call$0.009
Success—
StatusUnknown
How this service works
Call when an agent needs form actions via form[action] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-form-action first.
Output
Returns the value of the form[action] attribute found in the provided page URL or raw HTML, giving the agent the URL to which the form submits.
Example use cases
Automate web form submission
“I need to find out what URL this contact form submits to — can you pull the form action from https://example.com/contact so I can automate filling it out?”
Parse form endpoint from raw HTML
“I have this raw HTML snippet from a login page — can you extract the form action attribute from it so I know where the credentials get posted?”
Audit third-party form destinations
“Check this public page at https://partner-site.com/signup and tell me where their form action points to — I want to verify it's not sending data somewhere unexpected.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/css-form-action?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically discover the submission target of an HTML form from a public URL or raw HTML, especially when SSRF safety is required. Prefer the free sandbox endpoint /v1/sandbox/css-form-action for testing. Choose this paid endpoint for production use where reliability and SSRF protection matter.
Side effects
- No form element found in the HTML — returns an error or empty result
- URL is unreachable or returns non-200 status
- SSRF protection blocks internal/private IP addresses or localhost URLs
- HTML exceeds the 200,000 character maximum
- URL exceeds the 2,048 character maximum
- Malformed HTML prevents CSS selector from matching
- Multiple forms present — may return only the first match
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
Reviews
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