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CSS Meta Charset Extractor
x402
CSS Meta Charset Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-01).
Extracts the meta charset value from the meta[charset] element of a public webpage or raw HTML string
Price / call$0.009
Success—
StatusUnknown
How this service works
Call when an agent needs meta charset values via meta[charset] from a public page or HTML (SSRF-safe). Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/css-meta-charset first.
Output
Returns the value of the meta[charset] attribute found in the HTML head of the given URL or raw HTML string, such as 'UTF-8' or 'ISO-8859-1'. If no charset meta tag is found, the response will indicate absence.
Example use cases
Verify site character encoding compliance
“Check what character encoding is declared on https://myshop.com — I need to confirm it's using UTF-8 in the meta charset tag before we migrate the database.”
Parse charset from raw HTML snippet
“I have this raw HTML from a legacy site — can you pull out the meta charset value from it so I know what encoding to expect when processing the content?”
Audit third-party page encoding
“What charset does https://partner-site.org declare in its meta tag? I want to make sure their pages are compatible with our text processing pipeline.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/css-meta-charset?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to extract specifically the meta[charset] value from a public webpage or a raw HTML string in a safe, SSRF-protected way. Prefer the free sandbox endpoint POST /v1/sandbox/css-meta-charset first if available. Choose this over general HTML scrapers when you only need the charset metadata and want a lightweight, purpose-built extraction.
Side effects
- URL is unreachable or returns a non-200 HTTP status — fetch fails
- URL points to an internal or private network address — rejected by SSRF protection
- HTML does not contain a meta[charset] element — returns empty or null result
- HTML input exceeds 200,000 character limit — request rejected
- URL string shorter than 8 characters or longer than 2048 characters — validation error
- Malformed HTML that cannot be parsed — may return null or empty result
- Payment of $0.009 USDC not provided — 402 Payment Required response
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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