Port Reference Guide API

POST https://api.findutils.com/api/tools/port-reference-guide/execute

Return well-known network ports that match a port number, service name, protocol, or category, with a security note (safe / caution / insecure) for each. Call with no filters to list every port in the reference table.

Needs an API key. Running a tool needs an API key. Keys are not for sale yet: ask for early access. About API keys

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Request body

application/json

query

string optional

Free-text search over port number, service, description, and category, e.g. "ssh", "443", "database".
port

integer optional

Exact port number to look up (0-65535).
protocol

string optional

Restrict to one transport protocol. One of TCP · UDP · TCP/UDP.
category

string optional

Restrict to one category. One of Web · Email · File Transfer · Remote Access · DNS & Network · Database · Security & VPN · Messaging · Development · Container & Orchestration · Media · Proxy & Load Balancing · Monitoring · CI/CD · Message Queues.
limit

integer optional

Maximum number of entries to return (1-200). Default 50. Default 50.

Example arguments

Verified

{
  "port": 443
}

curl -X POST https://api.findutils.com/api/tools/port-reference-guide/execute \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "port": 443
  }'

const response = await fetch('https://api.findutils.com/api/tools/port-reference-guide/execute', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', Authorization: 'Bearer YOUR_API_KEY' },
  body: JSON.stringify({"port":443}),
});
const data = await response.json();

import requests

response = requests.post(
    "https://api.findutils.com/api/tools/port-reference-guide/execute",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"port":443},
)
data = response.json()

$ch = curl_init('https://api.findutils.com/api/tools/port-reference-guide/execute');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json', 'Authorization: Bearer YOUR_API_KEY'],
    CURLOPT_POSTFIELDS => '{"port":443}',
    CURLOPT_RETURNTRANSFER => true,
]);
$data = json_decode(curl_exec($ch), true);

Also an MCP tool

Call port_reference_guide from Claude, Cursor or any MCP client. Same arguments, same output.

https://mcp.findutils.com

MCP reference

Rate limit: 60 a minute, per IP
Auth: API key
REST id: port-reference-guide
MCP name: port_reference_guide
Category: Network
Machine-readable: openapi.json · markdown.md

Request body

Example arguments

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