Tool detail
TCP Port Scanner
Scans a hostname or IP over a port range and reports open/blocked state, likely service and detected software version for each port.
Categories: Domains IP, Security
Use when
- scan a host for open TCP ports
- identify what service and version is running on an open port
- check whether specific ports like 22 or 443 are open on a server
Not for
- not for hosts you don't own or have permission to scan
- not UDP scanning (tcp_connect only)
Inputs
POST JSON body: { target: string } (required); ports, scan_type, timeout (5-60s) (optional)
Admitted input schema
{
"type": "object",
"properties": {
"ports": {
"type": "string",
"minLength": 0,
"maxLength": 4096,
"description": "Which ports to check. Use a range like '1-1000', a comma-separated list like '22,80,443', or leave this out to automatically check the 1000 most commonly used ports."
},
"scan_type": {
"type": "string",
"minLength": 0,
"maxLength": 4096,
"description": "How to probe each port. The only supported value right now is 'tcp_connect', which tries to open a full connection - the same way a browser or app would. Defaults to 'tcp_connect' if left out."
},
"target": {
"type": "string",
"minLength": 0,
"maxLength": 4096,
"description": "The hostname (like 'example.com') or numeric IP address (like '93.184.216.34') you want to scan. Must be a real, reachable address."
},
"timeout": {
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991,
"description": "How many seconds the scan is allowed to run before giving up. Must be between 5 and 60. Defaults to 30 if left out."
}
},
"required": [
"target"
],
"additionalProperties": false
}Endpoint
- Method
POST- URL
https://port-scanner.underscoredone.com/scan
Payment
- Protocol
- x402
- Listed price
- 0.01 USDC per call on Base
- Payment method
- exact
- Network
- eip155:8453
- Asset
- 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.
Source
- Directory
- Coinbase x402 Bazaar
- Record
- POST https://port-scanner.underscoredone.com/scan
- Retrieved
- 2026-09-30T20:37:07.382Z
- Catalog file SHA-256
6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524- Catalog built
- 2026-09-30T22:31:58.034Z