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URL Preflight Check
x402
URL Preflight Check is a paid API for AI agents from agent.kihustle.tech, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Performs a fast, deterministic HTTP check on a public URL returning status code, redirect chain, content-type, response size, and page title before committing to deeper crawls.
Price / call$0.01
Success—
StatusUnknown
How this service works
Fast deterministic check that a public URL is alive: HTTP status, redirects, content-type, size, and title. Built for agent workflows before paying for deeper crawls.
Output
Returns HTTP status code, any redirect chain (intermediate and final URLs), content-type header, response body size in bytes, and extracted page title — all from a single lightweight HEAD/GET probe of the target URL.
Example use cases
Pre-crawl URL viability check
“I have a list of URLs I want to crawl — before spending money on full scrapes, can you run a preflight check on https://shop.acme.de to confirm it's live, see what HTTP status it returns, and check if it redirects?”
Broken link detection in outreach
“I'm about to send outreach emails with a link to https://promo.mybrand.com — can you quickly verify that URL is actually up, returning a 200, and the page title looks right before we blast it out?”
Content-type gating before parsing
“Before I try to parse https://data.someagency.gov/export as HTML, can you do a preflight check to confirm what content-type it actually serves and whether it's reachable at all?”
Technical details
Endpoint
POSThttps://agent.kihustle.tech/services/url-preflight/jobsWhen to prefer
Use this endpoint as a cheap gate ($0.01) before investing in deeper, more expensive crawls or content extraction. Ideal when you need to confirm a URL is alive, check its final destination after redirects, or gate on content-type before attempting to parse. Choose this over full scraping endpoints when you only need HTTP-level metadata and don't need page content or structured extraction.
Side effects
- URL is unreachable or times out — returns error status and no content metadata
- URL returns non-2xx status (e.g. 404, 403, 500) — status code returned but content fields may be empty
- Malformed or non-public URL provided — likely returns validation error
- URL is behind authentication or firewall — may return 401/403 with no content
- Redirect loop detected — may return error or partial redirect chain
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public https URL to preflight |
Output
Schema · Response
{
"type": "json",
"example": {
"alive": true,
"bytes": 12500,
"title": "Example Domain",
"job_id": "job_example",
"status": "completed",
"service": "url-preflight",
"sources": [
{
"url": "https://example.com/",
"note": "preflight"
}
],
"summary": "URL alive (HTTP 200); no redirect; title=set. Preflight complete for agent workflow gating.",
"final_url": "https://example.com/",
"next_jobs": [
{
"url": "https://agent.kihustle.tech/services/aeo-readiness/jobs",
"why": "Deeper agent-surface / AEO readiness audit",
"service_id": "aeo-readiness"
}
],
"redirected": false,
"issue_codes": [],
"limitations": [
"Single GET; no JS render; private IPs blocked."
],
"status_code": 200,
"content_type": "text/html",
"generated_at": "2026-01-01T00:00:00+00:00"
}
}Tags
x402
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