curl --request POST \
  --url https://api.iotools.cloud/v1/tool/water-hammer-pressure-estimator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "fluid": "water",
  "material": "steel",
  "diameter": "200",
  "wallThickness": "6",
  "length": "500",
  "velocityChange": "2",
  "closureTime": "0.5",
  "operatingPressure": "6"
}
'

import requests

url = "https://api.iotools.cloud/v1/tool/water-hammer-pressure-estimator"

payload = {
    "fluid": "water",
    "material": "steel",
    "diameter": "200",
    "wallThickness": "6",
    "length": "500",
    "velocityChange": "2",
    "closureTime": "0.5",
    "operatingPressure": "6"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    fluid: 'water',
    material: 'steel',
    diameter: '200',
    wallThickness: '6',
    length: '500',
    velocityChange: '2',
    closureTime: '0.5',
    operatingPressure: '6'
  })
};

fetch('https://api.iotools.cloud/v1/tool/water-hammer-pressure-estimator', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.iotools.cloud/v1/tool/water-hammer-pressure-estimator",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'fluid' => 'water',
    'material' => 'steel',
    'diameter' => '200',
    'wallThickness' => '6',
    'length' => '500',
    'velocityChange' => '2',
    'closureTime' => '0.5',
    'operatingPressure' => '6'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.iotools.cloud/v1/tool/water-hammer-pressure-estimator"

	payload := strings.NewReader("{\n  \"fluid\": \"water\",\n  \"material\": \"steel\",\n  \"diameter\": \"200\",\n  \"wallThickness\": \"6\",\n  \"length\": \"500\",\n  \"velocityChange\": \"2\",\n  \"closureTime\": \"0.5\",\n  \"operatingPressure\": \"6\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.iotools.cloud/v1/tool/water-hammer-pressure-estimator")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"fluid\": \"water\",\n  \"material\": \"steel\",\n  \"diameter\": \"200\",\n  \"wallThickness\": \"6\",\n  \"length\": \"500\",\n  \"velocityChange\": \"2\",\n  \"closureTime\": \"0.5\",\n  \"operatingPressure\": \"6\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.iotools.cloud/v1/tool/water-hammer-pressure-estimator")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"fluid\": \"water\",\n  \"material\": \"steel\",\n  \"diameter\": \"200\",\n  \"wallThickness\": \"6\",\n  \"length\": \"500\",\n  \"velocityChange\": \"2\",\n  \"closureTime\": \"0.5\",\n  \"operatingPressure\": \"6\"\n}"

response = http.request(request)
puts response.read_body

{
  "tool": "water-hammer-pressure-estimator",
  "tool_version": "1.0.2",
  "outputs": {
    "resultsTable": [
      {
        "property": "Pressure Wave Speed",
        "value": "1,270 m/s"
      },
      {
        "property": "Critical Time (2L/a)",
        "value": "0.787 s"
      },
      {
        "property": "Closure Type",
        "value": "Rapid (Joukowsky: ρ·a·ΔV)"
      },
      {
        "property": "Pressure Surge",
        "value": "2,535 kPa"
      },
      {
        "property": "Pressure Surge (bar)",
        "value": "25.35 bar"
      },
      {
        "property": "Pressure Surge (psi)",
        "value": "367.7 psi"
      },
      {
        "property": "Peak Pressure",
        "value": "31.35 bar"
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}

{
  "type": "https://docs.iotools.cloud/errors/validation_error",
  "title": "Invalid request",
  "status": 400,
  "code": "validation_error",
  "detail": "One or more inputs are invalid — see `fields`.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11",
  "fields": {
    "inputString": "Required"
  }
}

{
  "type": "https://docs.iotools.cloud/errors/invalid_api_key",
  "title": "Invalid API key",
  "status": 401,
  "code": "invalid_api_key",
  "detail": "Provide 'Authorization: Bearer <key>'.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11"
}

{
  "type": "https://docs.iotools.cloud/errors/insufficient_credits",
  "title": "Insufficient credits",
  "status": 402,
  "code": "insufficient_credits",
  "detail": "This call costs 1 credit and 0 remain in this month's allowance.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11",
  "credits_used": 0,
  "credits_remaining": 0
}

{
  "type": "https://docs.iotools.cloud/errors/tool_not_allowed",
  "title": "Tool not available over the API",
  "status": 403,
  "code": "tool_not_allowed",
  "detail": "\"Background Remover\" is available on iotools.cloud but has no API endpoint.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11"
}

{
  "type": "https://docs.iotools.cloud/errors/tool_not_found",
  "title": "Tool not found",
  "status": 404,
  "code": "tool_not_found",
  "detail": "No tool with that slug. See GET /v1/tools/list.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11"
}

{
  "type": "https://docs.iotools.cloud/errors/payload_too_large",
  "title": "Payload too large",
  "status": 413,
  "code": "payload_too_large",
  "detail": "Request body exceeds this tool's size limit.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11"
}

{
  "type": "https://docs.iotools.cloud/errors/unprocessable_input",
  "title": "Input cannot be processed",
  "status": 422,
  "code": "unprocessable_input",
  "detail": "This video has no captions or subtitles, so there is no transcript to extract.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11",
  "credits_used": 0
}

{
  "type": "https://docs.iotools.cloud/errors/rate_limited",
  "title": "Rate limit exceeded",
  "status": 429,
  "code": "rate_limited",
  "detail": "Too many requests. Retry in 30s.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11",
  "retry_after": 30
}

{
  "type": "https://docs.iotools.cloud/errors/processing_error",
  "title": "Tool failed to run",
  "status": 500,
  "code": "processing_error",
  "detail": "The tool failed to run. Please try again.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11",
  "credits_used": 0
}

{
  "type": "https://docs.iotools.cloud/errors/tool_disabled",
  "title": "Tool temporarily disabled",
  "status": 503,
  "code": "tool_disabled",
  "detail": "This tool is temporarily unavailable. Try again shortly.",
  "request_id": "e4042b29-8f1e-4c7a-9b52-6f0d1a3c7e11"
}