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On-page SEO Audit
x402
On-page SEO Audit is a paid API for AI agents from web.openverbs.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-28).
Audits a public webpage for on-page SEO signals, including keyword placement, meta tags, headings, and other ranking factors.
Price / call$0.006
Success—
StatusUnknown
How this service works
Fetch a public page and grade its on-page SEO: title and meta-description length, H1 and heading outline, canonical, meta-robots indexability, viewport/lang/charset, hreflang, Open Graph and Twitter Card completeness, image alt coverage and word count — plus optional focus-keyword placement and density. Returns a pass/warn/fail verdict per check and an overall 0–100 score.
Output
Returns a structured SEO audit report covering meta title and description presence and length, H1/H2 heading usage, keyword placement in title/H1/URL/meta description, keyword density, page structure signals, and any detected on-page SEO issues or recommendations.
Example use cases
Landing page keyword optimization check
“Audit my product landing page at https://acmeshoes.com/running-shoes for SEO and tell me if the keyword 'running shoes for men' appears in the title, H1, URL, and meta description.”
Pre-publish SEO review for blog post
“Before I publish, can you check https://myblog.com/drafts/keto-meal-plan for on-page SEO issues and see how well it targets the keyword 'keto meal plan for beginners'?”
Competitor SEO reverse-engineering
“Pull an on-page SEO audit for https://competitor.com/best-project-management-tools — I want to see what keyword signals they're using and how their meta tags and headings are structured.”
Technical details
Endpoint
POSThttps://web.openverbs.com/v1/seo-audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, structured on-page SEO analysis of a specific public URL — especially when checking keyword placement in key SEO signals like title, H1, URL slug, and meta description. It is ideal for content teams auditing individual pages before publishing, marketers evaluating competitor pages, or agents automating SEO health checks across a site's key pages. Prefer it over generic HTTP inspection tools when you need SEO-specific signals rather than raw HTML or headers.
Side effects
- Private, loopback, or link-local URLs are rejected with a 400 error
- URL is unreachable or returns a non-200 HTTP status — audit cannot be completed
- Page is JavaScript-rendered and content is not crawlable server-side — incomplete results
- Keyword is missing or empty — keyword-specific checks are skipped
- Rate limiting or payment failure results in a 402 or 429 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public http(s) URL to audit. Private/loopback/link-local addresses are rejected. |
| keyword | string | Optional focus keyword to check placement (title, H1, URL, meta description) and density for. |
Tags
x402
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