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AgentShelf Profile Meta Charset Extractor
x402
AgentShelf Profile Meta Charset Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).
Extracts meta charset values from a public URL or raw HTML string, with SSRF protection.
Price / call$0.005
Success—
StatusUnknown
How this service works
Call when an agent needs meta charset values extracted from a public page or HTML (SSRF-safe). Send JSON fields html (string). Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/profile-meta-charset first.
Output
Returns the character encoding value declared in the HTML page's meta charset tag (e.g. 'UTF-8', 'ISO-8859-1'), parsed either from a fetched public URL or a provided raw HTML string.
Example use cases
Check page encoding before scraping
“Before I start scraping this site, can you tell me what character encoding is declared in the meta charset tag at https://www.bbc.com?”
Validate charset in raw HTML snippet
“I have this HTML snippet I just fetched — can you pull out the meta charset value from it so I know how to decode the content properly? Here's the HTML: <!DOCTYPE html><html><head><meta charset="UTF-8"><title>Test</title></head><body></body></html>”
Audit site encoding declarations
“I'm auditing a list of sites for encoding issues — can you extract the meta charset from https://legacy-site.example.org so I can log what encoding it claims to use?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/profile-meta-charset?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically determine the character encoding declared in a webpage's meta charset tag, either by providing a public URL (SSRF-safe fetch) or raw HTML. Prefer the free sandbox endpoint (/v1/sandbox/profile-meta-charset) for testing or low-volume use before paying $0.005 USDC per call.
Side effects
- URL is unreachable or returns non-200 status — extraction fails
- No meta charset tag present in the HTML — returns empty or null result
- SSRF-blocked URL (private IP ranges, localhost) — request rejected for security
- HTML input exceeds 200,000 character limit — request rejected
- URL shorter than 8 characters or longer than 2048 — validation error
- Malformed HTML with no parseable head section — charset cannot be extracted
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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