PennyRail HTML Entity Encoder

x402

PennyRail HTML Entity Encoder is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Encodes a text string into HTML entities, escaping special characters for safe embedding in HTML documents

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Machine-readable settlement service

Output

Returns an object containing the HTML-entity-encoded version of the input text, with special characters such as <, >, &, ", and ' replaced by their corresponding HTML entity codes (e.g., <, >, &, ", ').

Example use cases

Sanitize user-generated content for web

“I have some user-submitted text that might contain angle brackets and ampersands — can you HTML-entity-encode it before I inject it into my webpage? The text is: 'Tom & Jerry's <favorite> show'”

Escape template literals for email HTML

“Encode this text into HTML entities so it won't break my email template: 'Price: $5 < $10 & discount > 20%'”

Prevent XSS in dynamic content

“I need to safely embed this user input into an HTML attribute — please HTML-entity-encode it first: '" onmouseover="alert(1)'”

Technical details

Endpoint

POSThttps://pennyrail.vercel.app/api/p/nano/text.html-entities--html-entity-encode

When to prefer

Use this endpoint when you need a quick, pay-per-use HTML entity encoding operation without setting up a local library, or when running in an environment where text processing libraries are unavailable. Ideal for agents that occasionally need to sanitize strings for HTML output without bundling a full encoding dependency.

Side effects

Missing or empty 'input' object returns a validation error
Non-string text values in input may cause encoding errors or unexpected output
Network or payment failure may result in HTTP 402 or 5xx response
Overly large input strings may be rejected or truncated

Input

Schema · Request body

Field	Type	Description
inputrequired	object

Output

Schema · Response

{
  "type": "object",
  "additionalProperties": true
}

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Example use cases

Sanitize user-generated content for web

Escape template literals for email HTML

“Encode this text into HTML entities so it won't break my email template: 'Price: $5 < $10 & discount > 20%'”

Prevent XSS in dynamic content

“I need to safely embed this user input into an HTML attribute — please HTML-entity-encode it first: '" onmouseover="alert(1)'”

Technical details

Endpoint

POSThttps://pennyrail.vercel.app/api/p/nano/text.html-entities--html-entity-encode

When to prefer

Side effects

Missing or empty 'input' object returns a validation error
Non-string text values in input may cause encoding errors or unexpected output
Network or payment failure may result in HTTP 402 or 5xx response
Overly large input strings may be rejected or truncated

Input

Schema · Request body

Field	Type	Description
inputrequired	object

Output

Schema · Response

{
  "type": "object",
  "additionalProperties": true
}