# agentshelf.syntexa.ch XPath iframe src Extractor

> agentshelf.syntexa.ch XPath iframe src Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-29).

Extracts src attributes from iframe elements using XPath (//iframe/@src) from a public URL or raw HTML, with SSRF protection

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/xpath-iframe-src?utm_source=zero.xyz
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-xpath-iframe-src-extractor-b247f3f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jTjbbfN1spZG2GNZ5rWvD

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-syntexa-ch-xpath-iframe-src-extractor-b247f3f5 -d '<json body>'
```

Example prompt: Can you pull all the iframe src URLs from https://example.com/embed-page? I need to know what external content is embedded there.

## When to prefer this

Use this endpoint when you need to extract iframe src attributes specifically via XPath from a public webpage or raw HTML, and you want SSRF-safe fetching. Prefer this over CSS-selector-based alternatives when XPath precision is needed. Use the unpaid sandbox variant (/v1/sandbox/xpath-iframe-src) first when available to avoid the $0.007 USDC cost.

## Known failure modes

- URL is unreachable or returns non-200 status — extraction fails with an error
- SSRF-blocked URL (private IP ranges, internal hostnames) — request rejected for security
- HTML input exceeds 200,000 character limit — rejected with validation error
- No iframe elements found on the page — returns empty array
- Malformed or unparseable HTML — may return partial results or error
- URL parameter too short (under 8 chars) or too long (over 2048 chars) — validation error

## How this service works

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

## Output

A list of src attribute values found in all iframe elements on the provided page or HTML, extracted via XPath (//iframe/@src). Returns an array of URL strings representing embedded content sources.

## 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-syntexa-ch-xpath-iframe-src-extractor-b247f3f5/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)