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HTML Named Entity Encoder
x402
HTML Named Entity Encoder 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).
Encodes text by converting special characters to their HTML named entity equivalents (e.g. & → &, < → <)
Price / call$0.007
Success—
StatusUnknown
How this service works
Call when an agent needs text encoded with html-named. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/html-named-encode first.
Output
Returns the input text with all special characters replaced by their corresponding HTML named entity references (e.g. < becomes <, & becomes &, " becomes ", etc.), making the string safe for direct embedding in HTML documents.
Example use cases
Safe HTML template injection
“I need to take this user-submitted comment and encode it with HTML named entities before inserting it into my HTML template: 'Tom & Jerry <cartoon> said "hello" to O\'Brien'. Can you encode it?”
Escaping code snippets for web display
“I want to display this code snippet safely on a webpage — please encode it with HTML named entities so angle brackets and special characters don't break the markup: '<script>alert("XSS")</script>'”
Email HTML body sanitization
“Before I embed this text in an HTML email body, encode all the special characters as HTML named entities: 'Prices start at €9.99 & include <VAT> — that\'s a "great" deal!'”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/html-named-encode?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, offline HTML named entity encoding without any LLM or network dependency. It is useful when you need to escape strings for safe HTML embedding and require exact, standards-compliant named entity output (e.g. & rather than numeric &). Note that an unpaid sandbox version at POST /v1/sandbox/html-named-encode should be preferred for testing or when cost must be avoided.
Side effects
- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Payment of $0.007 USDC not provided or x402 payment fails causes 402 response
- Malformed JSON body returns 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Input for this SKU. The route description says whether it is plain text, a URL, base64 bytes, or an already-encoded token. |
Tags
x402
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