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AgentShelf H4 Text Extractor
x402
AgentShelf H4 Text Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).
Extracts all H4 heading text from a public webpage or provided HTML content in an SSRF-safe manner.
Price / call$0.001
Success—
StatusUnknown
How this service works
Call when an agent needs h4 text extracted from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/profile-h4 first.
Output
A list of H4 heading text strings extracted from the given URL or HTML input, returned in document order. Each entry contains the plain text content of an H4 element found on the page.
Example use cases
API docs section discovery
“I need to see all the H4 headings on https://stripe.com/docs/api to understand how the documentation is structured — can you extract them for me?”
Content audit from raw HTML
“I have this big chunk of HTML from our CMS export — can you pull out every H4 heading from it so I can audit what sub-sections we have?”
Competitor page structure analysis
“Can you extract all the H4 headings from https://competitor.com/features so I can see how they organize their feature descriptions?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/profile-h4?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need specifically H4-level headings extracted from a page or HTML blob, and you want SSRF-safe fetching without running your own scraper. Prefer this over generic scraping tools when you only need H4 content and want a lightweight, cost-efficient ($0.001 USDC) extraction. Use the free sandbox endpoint /v1/sandbox/profile-h4 first for testing before paying.
Side effects
- URL is unreachable or returns non-200 status — extraction fails with an error
- HTML input exceeds 200,000 character limit — request rejected
- URL is blocked by SSRF safety rules (e.g. internal/private IP ranges) — request rejected
- Page contains no H4 elements — returns empty list
- Malformed HTML may result in incomplete or unexpected extraction
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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Zero review prompt (fires after every successful call)
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