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HTML Entity Encoder/Decoder
x402
HTML Entity Encoder/Decoder is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.0022/call, status unknown (last checked 2026-09-14).
Encodes or decodes HTML entities in text to prevent XSS vulnerabilities and ensure safe HTML rendering
Price / call$0.0022
Success—
StatusUnknown
How this service works
HTML entity encoder/decoder, XSS prevention, named entities, numeric entities, and amp; and lt; and gt;, character escape. Escape user input for safe HTML. Accepts payment on Base or Solana — either network works.
Output
Returns the input text with all HTML special characters converted to their safe entity equivalents (e.g. < becomes <, > becomes >, & becomes &, " becomes "), preventing XSS when the output is rendered in a browser.
Example use cases
Example prompt
“Encode this user-submitted comment so it's safe to inject into HTML and won't trigger XSS: '<script>alert("hacked")</script> & some "quoted" text'.”
Technical details
Endpoint
GEThttps://api.x402node.dev/encode/htmlWhen to prefer
Use this endpoint when you need to safely insert user-generated or untrusted text into HTML pages, templates, or email bodies, and want to prevent XSS attacks. Prefer this over manual string replacement when you need comprehensive coverage of all HTML special characters including named and numeric entities.
Side effects
- Empty or missing input body returns an error
- Extremely large payloads may be rejected
- Malformed JSON request body causes 400 error
- Non-text binary content may not encode correctly
Input
{
"text": "<script>alert('XSS')</script> & some \"quoted\" text"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"mode": "encode",
"_hint": "x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)",
"input": "<script>alert('XSS')</script> & some \"quoted\" text",
"output": "<script>alert('XSS')</script> & some "quoted" text"
}Tags
x402
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