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CSS Form Method Extractor
x402
CSS Form Method Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-29).
Extracts the HTTP method attribute from HTML form elements via CSS selector parsing, given a URL or raw HTML.
Price / call$0.01
Success—
StatusUnknown
How this service works
Call when an agent needs form methods via form[method] from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/css-form-method first.
Output
Returns the value of the method attribute from the form element found on the page or in the provided HTML (e.g. 'GET' or 'POST'), extracted via CSS selector matching on form[method].
Example use cases
Detect form submission method before automation
“I'm trying to automate form submissions on https://shop.example.com/checkout — can you tell me what HTTP method that form uses so I know how to send my requests?”
Audit forms on a web page for method type
“I have this HTML snippet from our login page and I need to know what method the login form uses — can you parse it and tell me if it's GET or POST?”
Verify third-party form configuration
“Can you check the form method on https://partners.example.org/apply so I can confirm they're using POST and not accidentally exposing data via GET?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/css-form-method?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically determine the HTTP method of an HTML form element from either a live public URL or raw HTML content, especially when SSRF safety is required. Prefer the free sandbox endpoint /v1/sandbox/css-form-method first if available; use this paid endpoint when the sandbox is unavailable or rate-limited.
Side effects
- URL is unreachable or returns non-200 status
- HTML contains no form element with a method attribute
- Input HTML exceeds 200,000 character limit
- URL string is shorter than 8 characters or malformed
- SSRF-blocked URL (internal/private IP ranges rejected)
- Form element present but method attribute is missing or empty
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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