Percentage Calculator API

POST https://api.findutils.com/api/tools/percentage/execute

Calculate percentages: X% of Y, percent change, increase, or decrease.

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

Try it

Request body

application/json

mode

string required

One of of · change · increase · decrease · what_percent.
x

number required

First number (see mode description).
y

number required

Second number (see mode description).

Example arguments

Verified

{
  "mode": "of",
  "x": 15,
  "y": 200
}

curl -X POST https://api.findutils.com/api/tools/percentage/execute \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "mode": "of",
    "x": 15,
    "y": 200
  }'

const response = await fetch('https://api.findutils.com/api/tools/percentage/execute', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json', Authorization: 'Bearer YOUR_API_KEY' },
  body: JSON.stringify({"mode":"of","x":15,"y":200}),
});
const data = await response.json();

import requests

response = requests.post(
    "https://api.findutils.com/api/tools/percentage/execute",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"mode":"of","x":15,"y":200},
)
data = response.json()

$ch = curl_init('https://api.findutils.com/api/tools/percentage/execute');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json', 'Authorization: Bearer YOUR_API_KEY'],
    CURLOPT_POSTFIELDS => '{"mode":"of","x":15,"y":200}',
    CURLOPT_RETURNTRANSFER => true,
]);
$data = json_decode(curl_exec($ch), true);

This tool is served over REST only. 388 other tools are callable from AI clients on the MCP server.

Rate limit: 60 a minute, per IP
Auth: API key
REST id: percentage
Category: Conversion
Machine-readable: openapi.json · markdown.md

Request body

Example arguments

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