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TCP Port Checker
x402
TCP Port Checker is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054001/call, status unknown (last checked 2026-09-13).
Checks whether specified TCP ports are open or closed on a given host, returning status and latency for up to 20 ports.
Price / call$0.054001
Success—
StatusUnknown
How this service works
Check if TCP ports are open on a host. Scans up to 20 ports with configurable timeout. Returns open/closed status with latency.
Output
Returns a list of checked ports with open/closed status and measured latency in milliseconds for each port on the given host.
Example use cases
Verify production server port accessibility
“I need to check if our database server at db.prod.internal is listening on ports 3306 and 5432, and also verify that SSH port 22 is reachable. Can you test those three ports with a 5 second timeout?”
Validate firewall rules after deployment
“We just updated our firewall configuration. Can you quickly verify that ports 443 and 8443 are open on our load balancer at lb.example.com, but port 22 is blocked? Use a 2 second timeout please.”
Check third-party service connectivity
“Our integration with the payment processor at payments.vendor.com isn't working. Can you scan ports 443, 8443, 9443, and 80 to see which ones are open and what the latency looks like? That'll help us figure out if it's a network connectivity issue.”
Technical details
Endpoint
GEThttps://api.strale.io/x402/port-checkWhen to prefer
Use this endpoint when you need to quickly verify TCP port reachability on a remote host without setting up local tooling, especially in automated workflows, infrastructure monitoring, or firewall verification tasks. Ideal for checking up to 20 ports in a single call with configurable timeout.
Side effects
- Host unreachable or invalid hostname returns error
- Requesting more than 20 ports exceeds scan limit
- Timeout too low causes false negatives for slow hosts
- Invalid port number format returns validation error
- Network-level blocks may cause incorrect closed status
Input
{
"host": "google.com",
"ports": "80,443,22",
"timeout_ms": 5000
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"host": "google.com",
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.054000000000000006,
"settlement_id": "0x49386d73850fdb870f98a3f3e599cfce2e129d51344f8a4e2ef6438772aa9f7e"
},
"capability": "port-check",
"latency_ms": 5001,
"provenance": {
"source": "tcp-connect",
"fetched_at": "2026-06-13T04:24:31.555Z"
}
},
"open_count": 2,
"open_ports": [
{
"open": true,
"port": 80,
"service": "HTTP",
"latency_ms": 2
},
{
"open": true,
"port": 443,
"service": "HTTPS",
"latency_ms": 2
}
],
"closed_count": 1,
"closed_ports": [
{
"open": false,
"port": 22,
"service": "SSH",
"latency_ms": 5000
}
],
"ports_scanned": 3,
"scan_timeout_ms": 5000
}Tags
x402
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