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RelayStation HTML Sanitizer
x402
RelayStation HTML Sanitizer is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Sanitizes HTML against a safe whitelist by stripping scripts, event handlers, and XSS vectors before embedding user-generated content
Price / call$0.01
Success—
StatusUnknown
How this service works
$0.0002/MB. Sanitize HTML against a safe whitelist — kill scripts and XSS before embedding. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny
Output
Returns the sanitized HTML string with all unsafe elements removed — scripts, event handlers, javascript: URLs, iframes, and other XSS vectors stripped out, while preserving safe whitelisted tags and attributes for valid rendering.
Example use cases
User comment XSS prevention
“A user just submitted this HTML in a comment box: '<b>Great post!</b><script>document.cookie</script><img src=x onerror=alert(1)>'. Can you sanitize it against a safe whitelist so I can safely render it on my site?”
Rich text editor output cleanup
“My rich text editor produced this HTML and I need to store it in the database safely — please strip out any scripts, inline event handlers, or dangerous attributes before I save it: '<div style="color:red" onmouseover="steal()"><a href="javascript:void(0)">Click</a></div>'”
Email newsletter HTML hardening
“Before I inject this HTML block into the email template, sanitize it to kill any XSS vectors or unsafe tags — keep the formatting but remove anything that could be exploited: '<h2>Sale!</h2><iframe src="evil.com"></iframe><p style="font-size:14px">Shop now</p>'”
Technical details
Endpoint
POSThttps://api.relaystation.ai/v1/text/sanitize-htmlWhen to prefer
Choose this endpoint when you need to safely embed user-generated or third-party HTML content in a web page, database, or email and need server-side XSS stripping rather than a client-side library. Ideal for agents processing untrusted HTML at scale where a whitelist-based server sanitization step is required before storage or rendering, and per-MB micropayment pricing makes it cost-effective for variable payload sizes.
Side effects
- Malformed or non-UTF-8 input HTML may cause parsing errors
- Extremely large HTML payloads may exceed per-MB pricing thresholds or size limits
- Overly aggressive sanitization may strip legitimate but edge-case safe tags not on the whitelist
- Network timeout if payload is very large; retry recommended
- Payment failure if insufficient USDC balance for x402 transaction
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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