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PageAudit - Web Page Audit API
x402
PageAudit - Web Page Audit API is a paid API for AI agents from api.firstmention.uk, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Fetches a public webpage and returns its HTTP status, metadata (title, OG tags, favicon, canonical URL), headings, full markdown content, link inventory, optional link health-check results, and a content change hash.
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call HTTP APIs, paid with x402 in USDC on Base (eip155:8453): agentkit, api-change-check, basedue, basewatch, chainread, check-sanctions, chgwatch, company-facts, composite, edgar, feednews, pageaudit, solcheck, token-dd, txpreflight, walletcheck, webmd, webread, websearch, x402index. Each operation describes its service.
Output
A JSON object containing: ok (boolean success), url (final URL), status (HTTP response code), meta (title, description, OG tags, favicon, canonical), headings (array of {text, level}), markdown (page content as markdown up to configured char limit), markdown_chars (actual length), links (found/checked/internal/external counts), link_health (ok/broken/checked counts plus per-URL results with status codes), change_hash (SHA-256 hash of page content for change detection), and price_usd.
Example use cases
SEO metadata check for a landing page
“Audit https://www.acmecorp.com/landing and pull out the page title, meta description, canonical URL, and OG tags so I can see if they're set up correctly.”
Broken link detection on a blog post
“Check https://myblog.com/best-tools-2024 and health-check all 15 links on the page — I want to know which ones are returning errors or are broken.”
Content change detection for a competitor page
“Fetch https://competitor.com/pricing and give me the full markdown and a change hash so I can compare it against last week's snapshot and see if anything changed.”
Technical details
Endpoint
GEThttps://api.firstmention.uk/s/pageaudit/audit?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a single-call solution that combines webpage fetching, content extraction to markdown, metadata inspection, link enumeration, and optional link health-checking — all for $0.01 USDC per call. Prefer it over raw HTTP fetchers when you need structured output (headings, OG tags, link counts) and a change hash for monitoring. It is ideal for SEO audits, content ingestion pipelines, broken-link detection, and lightweight page monitoring without needing a full crawler infrastructure.
Side effects
- Non-public or authentication-required URL returns error or empty content
- URL unreachable or returns non-200 status (reflected in status field, ok=false)
- Malformed URL input fails schema validation before request
- Pages with heavy JavaScript rendering may return incomplete content
- Very large pages may be truncated at max_markdown_chars limit
- Link health checks may time out for slow external URLs
- Payment failure via x402 prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"url": "https://news.ycombinator.com/",
"meta": {
"og": {},
"title": "Hacker News",
"favicon": "https://news.ycombinator.com/favicon.ico",
"canonical": "",
"description": ""
},
"links": {
"found": 198,
"checked": 10,
"external": 78,
"internal": 120
},
"status": 200,
"headings": [
{
"text": "Hacker News",
"level": 1
}
],
"markdown": "# Hacker News ...",
"price_usd": "0.01",
"change_hash": "0a080719be9fbb82a86a45b80dc8c2a430fbe17dc93d23758debac092864d00f",
"link_health": {
"ok": 9,
"broken": 1,
"checked": 10,
"results": [
{
"ok": true,
"url": "https://example.com/",
"status": 200
}
]
},
"markdown_chars": 17001
}
}Tags
x402
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