curl --request POST \
  --url https://api.iotools.cloud/v1/tool/matrix-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "ioA11": "<string>",
  "ioA12": "<string>",
  "ioA13": "<string>",
  "ioA21": "<string>",
  "ioA22": "<string>",
  "ioA23": "<string>",
  "ioA31": "<string>",
  "ioA32": "<string>",
  "ioA33": "<string>",
  "ioB11": "<string>",
  "ioB12": "<string>",
  "ioB13": "<string>",
  "ioB21": "<string>",
  "ioB22": "<string>",
  "ioB23": "<string>",
  "ioB31": "<string>",
  "ioB32": "<string>",
  "ioB33": "<string>"
}
'

import requests

url = "https://api.iotools.cloud/v1/tool/matrix-calculator"

payload = {
    "ioA11": "<string>",
    "ioA12": "<string>",
    "ioA13": "<string>",
    "ioA21": "<string>",
    "ioA22": "<string>",
    "ioA23": "<string>",
    "ioA31": "<string>",
    "ioA32": "<string>",
    "ioA33": "<string>",
    "ioB11": "<string>",
    "ioB12": "<string>",
    "ioB13": "<string>",
    "ioB21": "<string>",
    "ioB22": "<string>",
    "ioB23": "<string>",
    "ioB31": "<string>",
    "ioB32": "<string>",
    "ioB33": "<string>"
}
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({
    ioA11: '<string>',
    ioA12: '<string>',
    ioA13: '<string>',
    ioA21: '<string>',
    ioA22: '<string>',
    ioA23: '<string>',
    ioA31: '<string>',
    ioA32: '<string>',
    ioA33: '<string>',
    ioB11: '<string>',
    ioB12: '<string>',
    ioB13: '<string>',
    ioB21: '<string>',
    ioB22: '<string>',
    ioB23: '<string>',
    ioB31: '<string>',
    ioB32: '<string>',
    ioB33: '<string>'
  })
};

fetch('https://api.iotools.cloud/v1/tool/matrix-calculator', 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/matrix-calculator",
  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([
    'ioA11' => '<string>',
    'ioA12' => '<string>',
    'ioA13' => '<string>',
    'ioA21' => '<string>',
    'ioA22' => '<string>',
    'ioA23' => '<string>',
    'ioA31' => '<string>',
    'ioA32' => '<string>',
    'ioA33' => '<string>',
    'ioB11' => '<string>',
    'ioB12' => '<string>',
    'ioB13' => '<string>',
    'ioB21' => '<string>',
    'ioB22' => '<string>',
    'ioB23' => '<string>',
    'ioB31' => '<string>',
    'ioB32' => '<string>',
    'ioB33' => '<string>'
  ]),
  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/matrix-calculator"

	payload := strings.NewReader("{\n  \"ioA11\": \"<string>\",\n  \"ioA12\": \"<string>\",\n  \"ioA13\": \"<string>\",\n  \"ioA21\": \"<string>\",\n  \"ioA22\": \"<string>\",\n  \"ioA23\": \"<string>\",\n  \"ioA31\": \"<string>\",\n  \"ioA32\": \"<string>\",\n  \"ioA33\": \"<string>\",\n  \"ioB11\": \"<string>\",\n  \"ioB12\": \"<string>\",\n  \"ioB13\": \"<string>\",\n  \"ioB21\": \"<string>\",\n  \"ioB22\": \"<string>\",\n  \"ioB23\": \"<string>\",\n  \"ioB31\": \"<string>\",\n  \"ioB32\": \"<string>\",\n  \"ioB33\": \"<string>\"\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/matrix-calculator")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"ioA11\": \"<string>\",\n  \"ioA12\": \"<string>\",\n  \"ioA13\": \"<string>\",\n  \"ioA21\": \"<string>\",\n  \"ioA22\": \"<string>\",\n  \"ioA23\": \"<string>\",\n  \"ioA31\": \"<string>\",\n  \"ioA32\": \"<string>\",\n  \"ioA33\": \"<string>\",\n  \"ioB11\": \"<string>\",\n  \"ioB12\": \"<string>\",\n  \"ioB13\": \"<string>\",\n  \"ioB21\": \"<string>\",\n  \"ioB22\": \"<string>\",\n  \"ioB23\": \"<string>\",\n  \"ioB31\": \"<string>\",\n  \"ioB32\": \"<string>\",\n  \"ioB33\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.iotools.cloud/v1/tool/matrix-calculator")

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  \"ioA11\": \"<string>\",\n  \"ioA12\": \"<string>\",\n  \"ioA13\": \"<string>\",\n  \"ioA21\": \"<string>\",\n  \"ioA22\": \"<string>\",\n  \"ioA23\": \"<string>\",\n  \"ioA31\": \"<string>\",\n  \"ioA32\": \"<string>\",\n  \"ioA33\": \"<string>\",\n  \"ioB11\": \"<string>\",\n  \"ioB12\": \"<string>\",\n  \"ioB13\": \"<string>\",\n  \"ioB21\": \"<string>\",\n  \"ioB22\": \"<string>\",\n  \"ioB23\": \"<string>\",\n  \"ioB31\": \"<string>\",\n  \"ioB32\": \"<string>\",\n  \"ioB33\": \"<string>\"\n}"

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

{
  "tool": "<string>",
  "tool_version": "<string>",
  "outputs": {
    "ioResult": "<string>",
    "ioSteps": "<string>"
  },
  "credits_used": 123,
  "request_id": "<string>",
  "credits_remaining": 123
}

{
  "type": "https://iotools.cloud/docs/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"
}

{
  "type": "https://iotools.cloud/docs/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://iotools.cloud/docs/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"
}

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

{
  "type": "https://iotools.cloud/docs/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://iotools.cloud/docs/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"
}

{
  "type": "https://iotools.cloud/docs/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"
}

{
  "type": "https://iotools.cloud/docs/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"
}