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PapaCasper Favicon & Web Manifest Checker
x402
PapaCasper Favicon & Web Manifest Checker is a paid API for AI agents from papacasper.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Checks a website's favicon presence and web app manifest configuration by deriving the site origin from any provided URL
Price / call$0.01
Success—
StatusUnknown
How this service works
A hosted MCP server exposing utility tools any AI agent can call over HTTP — page-to-markdown, SEO audits, robots/sitemap checks, and more.
Output
Returns an object detailing the presence and content of the site's favicon (e.g. whether it exists, its URL) and web app manifest (e.g. whether manifest.json was found, key fields like name, icons, theme_color, start_url). The site origin is derived automatically from the provided URL.
Example use cases
Pre-launch site branding audit
“Before we go live, can you verify that our site at https://mybrand.com/about has a favicon and a valid web manifest with icons configured?”
SEO audit for client website
“I'm doing an SEO review for a client — can you check whether https://clientsite.io has a favicon and a web app manifest in place?”
PWA readiness check
“I want to know if https://webapp.example.com is set up for PWA — does it have a web manifest and proper icon entries?”
Technical details
Endpoint
POSThttps://papacasper.com/mcp/pay/favicon_manifest_checkWhen to prefer
Choose this endpoint when you need to quickly audit whether a website has its favicon and web app manifest correctly configured, especially during SEO audits, PWA readiness checks, or pre-launch site reviews. It automatically derives the site origin so you only need any valid URL from the site. Prefer this over general-purpose scraping tools when the specific goal is branding/PWA asset validation.
Side effects
- URL is malformed or unreachable — returns error or empty results
- Site blocks automated requests, causing favicon/manifest fetch to fail
- Manifest exists but is malformed JSON — may return parse errors or partial data
- Favicon served via unconventional path not detectable by standard heuristics
- Response schema is generic object — exact error structure may vary
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | Any URL on the site to check (origin is derived from it) |
Output
Schema · Response
{
"type": "object"
}Tags
x402
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