# AgentShelf XPath Input Name Extractor

> AgentShelf XPath Input Name Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-02).

Extracts the name attributes of HTML input elements (via //input/@name XPath) from a given public URL or raw HTML string, in an SSRF-safe manner.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/xpath-input-name?utm_source=zero.xyz
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-xpath-input-name-extractor-d7520625
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UBwZYLNF1rGtfE-xBFF1r

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentshelf-xpath-input-name-extractor-d7520625 -d '<json body>'
```

Example prompt: Can you extract all the input field names from the form on this page: https://example.com/signup — I need to know what name attributes the input elements use?

## When to prefer this

Use this endpoint when you need to programmatically discover the name attributes of HTML input elements from a public page or raw HTML snippet — especially for form analysis, web automation setup, or data extraction pipelines. Prefer this over general-purpose HTML parsers when you specifically need input[name] values and want SSRF-safe fetching built in.

## Known failure modes

- URL is unreachable or returns a non-200 status, resulting in an error response
- HTML input exceeds the 200,000 character limit, causing a validation error
- No input elements found on the page — returns an empty list
- SSRF-blocked URL (private IP ranges, localhost) results in a rejection
- Malformed HTML that cannot be parsed may yield incomplete or empty results
- URL string shorter than 8 characters or longer than 2048 characters fails validation

## How this service works

Call when an agent needs name attributes of //input via //input/@name from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/xpath-input-name first.

## Output

Returns an array or list of name attribute values extracted from all //input elements found on the page or in the provided HTML, enabling the caller to identify form field names without manually parsing HTML.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "maxLength": 2048,
   "minLength": 8,
   "description": "Public page to fetch. The selector or profile is fixed by the SKU. Provide url or html."
  },
  "html": {
   "type": "string",
   "examples": [
    "<!doctype html><html lang=\"en\"><head><title>Hello</title>\n<meta name=\"description\" content=\"Desc\"><meta property=\"og:title\" content=\"OG\">\n<link rel=\"canonical\" href=\"https://example.com/\"><link rel=\"icon\" href=\"/favicon.ico\">\n</head><body><h1>Hello</h1><a href=\"https://example.com/a\">A</a></body></html>"
   ],
   "maxLength": 200000,
   "minLength": 1,
   "description": "HTML to extract from locally. Provide html or url. When both are set, html is used."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-xpath-input-name-extractor-d7520625/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)