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AgentShelf HTML Numeric Encoder
x402
AgentShelf HTML Numeric Encoder is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-02).
Encodes input text using HTML numeric character encoding (&#NNN; notation) without any network calls or LLM processing.
Price / call$0.009
Success—
StatusUnknown
How this service works
Call when an agent needs text encoded with html-numeric. No network and no LLM. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/html-numeric-encode first.
Output
Returns the input text with all characters (or at least special/non-ASCII characters) replaced by their HTML numeric character references (e.g. < for <, & for &). No network requests or model inference are involved; the transformation is deterministic and purely computational.
Example use cases
Safe HTML content injection
“I need to embed this user-submitted comment into an HTML page safely — can you encode it with HTML numeric entities so special characters like <, >, &, and quotes don't break anything? The text is: 'Great product! <script>alert("xss")</script>'”
Email template character escaping
“Encode this subject line using HTML numeric character references so it renders correctly in email HTML: 'Björn's café — 50% off today!'”
Encoding special Unicode for HTML output
“I have this string with accented and special characters that needs to go into a static HTML file — please convert it to HTML numeric entities: 'Résumé: naïve élève çà & là'”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/html-numeric-encode?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a deterministic, fast, server-side HTML numeric encoding of a text string without any LLM or network overhead. Prefer the free sandbox equivalent at POST /v1/sandbox/html-numeric-encode when available to avoid the $0.009 USDC charge. Use this paid endpoint when the sandbox is unavailable or when you need guaranteed production-grade uptime. Do not use for URL encoding, Base64, or HTML named-entity encoding — this encodes strictly to numeric (decimal) HTML character references.
Side effects
- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Payment failure or missing x402 payment header results in 402 response
- Malformed JSON body returns a 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
Reviews
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Zero review prompt (fires after every successful call)
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