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html-basic-lint
x402
html-basic-lint is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Lints raw HTML or a URL for common issues including unclosed tags, missing doctype/lang/title/charset/viewport, images without alt, links without href or text, duplicate IDs, inline event handlers, and deprecated tags.
Price / call$0.01
Success—
StatusUnknown
How this service works
Basic HTML lint (no external validator): unclosed or mismatched tags, missing doctype, lang, title, meta charset and viewport, images without alt, links without href or text, duplicate ids, inline event handlers, deprecated tags (font, center, marquee), and counts. Give raw HTML or a URL. $0.01 per document.
Output
Returns a structured list of HTML issues found in the submitted document or URL, including counts and categorized warnings for: unclosed or mismatched tags, missing doctype/lang/title/charset/viewport declarations, images without alt attributes, links missing href or visible text, duplicate IDs, inline event handlers, and usage of deprecated tags (font, center, marquee).
Example use cases
Pre-launch HTML quality check
“Before I deploy my landing page, can you lint this HTML and flag any missing doctype, viewport meta, alt attributes on images, or deprecated tags? Here's the full HTML source.”
Accessibility audit for missing alt text
“I want to make sure my blog post HTML has alt text on every image and proper lang and title tags — can you run a quick lint check on this HTML and list all the issues?”
Scan a live URL for HTML problems
“Can you check the HTML at https://example.com for things like unclosed tags, missing charset, inline event handlers, duplicate IDs, and any deprecated elements like font or marquee?”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/dev/html-validate-basicWhen to prefer
Choose this endpoint when you need quick, server-side HTML linting without sending documents to the W3C validator or installing local tooling. It is ideal for automated CI checks, agent-driven code review, or accessibility pre-audits where you want actionable counts and issue lists for common HTML mistakes in a single lightweight call at $0.01 per document.
Side effects
- Invalid or unreachable URL returns an error with no lint results
- Malformed input that is not valid HTML or a URL may return an empty or partial result
- Very large HTML documents may be truncated or time out
- Payment not included or insufficient (x402 flow) results in a 402 Payment Required response
- Network errors fetching a remote URL cause fetch failure response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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