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Hyrule Cloud NAT Port Forward Check
x402
Hyrule Cloud NAT Port Forward Check is a paid API for AI agents from cloud.hyrule.host, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Checks whether a specific TCP or UDP port on a target host is reachable and forwarded through NAT/CGNAT from an external vantage point
Price / call$0.005
Success—
StatusUnknown
How this service works
Full-stack network infrastructure for AI agents on AS215932 (RIPE): IPv6-native VMs with SSH and automatic HTTPS subdomains, domain registration and DNS, a broad network-intelligence suite (BGP/routing, IP/ASN & reputation, DNS, RDAP/WHOIS, web & deep TLS, mail deliverability, port/NAT/CGNAT, VoIP/SIP), and proxied requests over Direct/Tor/I2P/Yggdrasil. Pay per request in USDC on Base via x402; VM checkout may also accept BTC/XMR when advertised. This OpenAPI document intentionally contains only the launch-ready, independently payable agent surface.
Output
Returns a diagnostic response with a status (ok/info/warning/critical/error), a human-readable summary, a list of findings with severity codes and messages, the resolved target info, optional raw probe data including service banner, and a request ID with timestamp.
Example use cases
Verifying home server SSH access
“Can you check if port 22 is open and reachable on myserver.example.com from outside? I want the SSH banner too so I can confirm it's the right service.”
Diagnosing game server port block
“Test whether UDP port 25565 on gameserver.example.com is accessible from an external vantage — I'm trying to figure out if my ISP's CGNAT is blocking it.”
Confirming HTTPS service reachability
“Verify that port 443 is forwarded and reachable on api.myapp.dev using the https profile — I need to know if my reverse proxy is accepting connections from the outside world.”
Technical details
Endpoint
POSThttps://cloud.hyrule.host/v1/nat/port-forward/checkWhen to prefer
Use this endpoint when you need external verification that a port is forwarded and reachable through NAT or CGNAT from a real internet vantage point, especially when testing home servers, self-hosted services, or VMs behind carrier-grade NAT. Prefer this over generic port scanners when you need structured diagnostic findings, banner grabbing, protocol-profile-aware probing, or when operating in an agent context requiring x402 per-request payment on Base.
Side effects
- Target host unreachable — port closed or filtered, returned as 'critical' or 'warning' status
- Invalid port number outside 1–65535 range — schema validation error
- Timeout exceeded (up to 30000ms) — returned as 'error' or 'warning' status
- Invalid target format or hostname resolution failure — error status
- Vantage point temporarily unavailable — error status with explanation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| port | integer | |
| target | string | |
| profile | string | |
| vantage | string | |
| protocol | string | |
| timeout_ms | integer | |
| include_banner | boolean |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "ok",
"target": {
"type": "host",
"input": "example.com:443",
"normalized": "example.com:443"
},
"partial": false,
"sources": {},
"summary": "Port forward is reachable",
"findings": [
{
"code": "example",
"message": "No issue found",
"severity": "ok"
}
],
"request_id": "diag_a1b2c3d4",
"generated_at": "2026-07-15T00:00:00Z"
}
}Tags
x402
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