Index onlineMerchant portal
Api Endpoint

TCP Port Scanner

Give this API a hostname or IP address and it tries connecting to each port in your requested range. For every port that answers it reports whether it is open or blocked, which service is likely running there (a web server, SSH), and what software version was detected. Saves you installing network tools, parsing command-line output, or writing socket loops. Only scan hosts you own or have permission to scan - this tool does not check that for you.

Open interactive test console

Offering

Provider
port-scanner.underscoredone.com
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Infrastructure
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://port-scanner.underscoredone.com/scan
MIME type
application/json
First seen
2026-10-16T01:50:10.647Z
Last seen
Tags
port scanner, port scan, open ports, tcp port scanner, scan ports

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "payTo": "8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b"
  }
]

Observed health

Status
Reachable
Latest latency
83 ms
Average latency
477 ms
HTTP status
405
Last checked
Reachability
88.9% over 9 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "type": "object",
      "properties": {
        "target": {
          "type": "string",
          "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."
        },
        "ports": {
          "type": "string",
          "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",
          "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."
        },
        "timeout": {
          "type": "integer",
          "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
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "properties": {
        "api_version": {
          "type": "string"
        },
        "target": {
          "type": "string"
        },
        "resolved_ip": {
          "type": "string"
        },
        "scan_type": {
          "type": "string"
        },
        "duration_ms": {
          "type": "integer"
        },
        "complete": {
          "type": "boolean"
        },
        "ports_requested": {
          "type": "integer"
        },
        "ports_scanned": {
          "type": "integer"
        },
        "open_ports": {
          "type": "array",
          "items": {
            "type": "object"
          }
        },
        "closed_or_filtered_count": {
          "type": "integer"
        },
        "warning": {
          "type": "string"
        }
      },
      "required": [
        "api_version",
        "target",
        "resolved_ip",
        "scan_type",
        "duration_ms",
        "complete",
        "ports_requested",
        "ports_scanned",
        "open_ports",
        "closed_or_filtered_count",
        "warning"
      ]
    }
  },
  "required": [
    "type"
  ]
}