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agent402.tools Favicon Grab
x402
agent402.tools Favicon Grab is a paid API for AI agents from agent402.tools, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Fetches a website's favicon/logo by parsing its HTML link tags, selecting the largest declared icon, and returning the image bytes as base64
Price / call$0.003
Success—
StatusUnknown
How this service works
Fetch a site's favicon/logo: reads the page's declared <link rel=icon…> tags (all variants with their sizes and types), deterministically picks the largest declared icon (falling back to /favicon.ico), fetches it, and returns the bytes as a base64 data URI plus the resolved icon URL and content type. Icons over 256KB return the URL and metadata without the inline data URI. SSRF-guarded - private-network hosts are rejected. Sites with no reachable icon return {found:false}.
Output
Returns the favicon image as base64-encoded bytes, selected deterministically as the largest declared icon from the page's <link rel=icon> tags, falling back to /favicon.ico if no tags are found. Includes icon size and MIME type metadata.
Example use cases
Example prompt
“Can you grab the favicon for github.com and give me the image bytes as base64 so I can display it in my app?”
Technical details
Endpoint
POSThttps://agent402.tools/api/favicon-grabWhen to prefer
Use this endpoint when you need to programmatically retrieve a website's favicon or brand icon as raw image bytes (base64), especially when you want the largest available declared icon rather than a guess at /favicon.ico. Prefer this over manual HTML parsing when you need a reliable, deterministic icon selection across many sites.
Side effects
- URL is unreachable or returns non-2xx status — endpoint may return an error or fall back to /favicon.ico
- Site has no declared icon tags and /favicon.ico does not exist — returns error or empty response
- Malformed URL input — validation error returned
- Icon file itself returns a non-image content type — may return error or unexpected bytes
- Network timeout fetching the remote site or icon resource
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Site URL or bare domain (https:// is assumed when omitted). |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://github.com/",
"bytes": 958,
"found": true,
"dataUri": "data:image/png;base64,iVBORw0KGgo…",
"iconUrl": "https://github.githubassets.com/favicons/favicon.png",
"declared": [
{
"rel": "alternate icon",
"href": "https://github.githubassets.com/favicons/favicon.png",
"mask": false,
"type": "image/png",
"sizes": null
}
],
"contentType": "image/png",
"finalIconUrl": "https://github.githubassets.com/favicons/favicon.png"
}
}Tags
x402
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