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VYTREL Control URL Proof
x402
VYTREL Control URL Proof is a paid API for AI agents from vytrel-control.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-10).
Verifies that a public HTTPS URL is reachable, returning status, latency, redirect chain, content type, and a SHA-256 hash of a content sample.
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-payable URL observations and Base wallet reads, with x402 settlement receipts.
Output
A JSON object indicating whether the URL was reachable (ok: boolean), the HTTP status code, the final URL after any redirects, an array of intermediate redirect URLs, the content type, number of bytes sampled, a SHA-256 hex hash of the sampled content, total latency in milliseconds, and the timestamp when the check was performed.
Example use cases
Pre-publish link validation
“Before I publish this blog post, check that https://docs.partner.io/integration-guide is actually reachable, not redirecting somewhere weird, and tell me the content type and response time.”
Content integrity fingerprinting
“I need to verify that https://cdn.mycompany.com/releases/v2.1.0/installer.exe is live and get me a SHA-256 hash of its content so I can confirm it hasn't changed.”
Redirect chain investigation
“Can you probe https://short.link/abc123 and show me the full redirect chain, the final destination URL, and how long the whole thing took?”
Technical details
Endpoint
GEThttps://vytrel-control.vercel.app/api/url-proof?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, paid-per-call proof that a specific public HTTPS URL is live, including redirect resolution, content fingerprinting via SHA-256, and latency measurement — particularly when you need cryptographic evidence of what was at a URL at a given moment, or when building automated link-health checks into a workflow.
Side effects
- URL is unreachable or times out — ok: false with no status code
- URL requires authentication — returns 401 or 403 with ok: false
- Invalid or non-HTTPS URL provided — validation error on input
- DNS resolution failure for the given hostname
- URL redirects in a loop — possible error or truncated redirect array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"scope": "One observation from VYTREL's server; sampled bytes only.",
"status": 200,
"finalUrl": "https://example.com/",
"checkedAt": "2026-10-01T17:00:00.000Z",
"latencyMs": 120,
"redirects": [],
"upstreamOk": true,
"contentType": "text/html",
"bytesSampled": 1256,
"requestedUrl": "https://example.com/",
"sampleSha256": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"sampleTruncated": false,
"sampleLimitBytes": 65536
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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