For the complete documentation index, see llms.txt.
Calculate gross profit, margin percent, markup percent, and chart-ready revenue breakdown.
One POST adds Margin Calculator to your app, site, workflow, or agent — formula, validation, edge cases, and docs already handled.
prefer a UI? Open the Margin Calculator on miniwebtool.com →
POST https://api.miniwebtool.com/v1/tools/margin-calculator/run
| Field | Type | Req. |
|---|---|---|
revenue
|
float |
— |
cost
|
float |
— |
precision
|
int |
— |
65536 bytes.hash_only{
"request_id": "01K...",
"tool": "margin-calculator",
"tool_version": "2026-04-22",
"credits_used": 1,
"result": { ... }
}
curl -X POST https://api.miniwebtool.com/v1/tools/margin-calculator/run \
-H 'Authorization: Bearer mwt_live_YOUR_KEY' \
-H 'Content-Type: application/json' \
-d '{}'
import requests
resp = requests.post(
'https://api.miniwebtool.com/v1/tools/margin-calculator/run',
headers={'Authorization': 'Bearer mwt_live_YOUR_KEY'},
json={},
)
resp.raise_for_status()
data = resp.json()
print(data)
result = data['result']
chart_data = result.get('chart_data', {})
balance_series = (
chart_data.get('balance_over_time')
or chart_data.get('minimum_payment_balance_over_time')
or chart_data.get('series')
or chart_data.get('points')
or []
)
breakdown = (
chart_data.get('payment_breakdown')
or chart_data.get('monthly_payment_breakdown')
or chart_data.get('total_cost_breakdown')
or chart_data.get('breakdown')
or chart_data.get('comparison')
or []
)
strategy_series = chart_data.get('payment_strategy_comparison', [])
def chart_label(point):
return point.get('label') or point.get('month') or point.get('year') or point.get('n') or point.get('x')
def chart_value(point):
return point.get('value') or point.get('ending_balance') or point.get('y') or point.get('total_interest')
print('chart labels:', [chart_label(point) for point in balance_series])
print('chart values:', [chart_value(point) for point in balance_series])
print('breakdown:', breakdown)
print('strategy interest:', [(item['label'], item['total_interest']) for item in strategy_series])
const resp = await fetch(
'https://api.miniwebtool.com/v1/tools/margin-calculator/run',
{
method: 'POST',
headers: {
'Authorization': 'Bearer mwt_live_YOUR_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({}),
}
);
const data = await resp.json();
console.log(data);
const result = data.result;
const chartData = result.chart_data ?? {};
const balanceSeries =
chartData.balance_over_time ??
chartData.minimum_payment_balance_over_time ??
chartData.series ??
chartData.points ??
[];
const breakdown =
chartData.payment_breakdown ??
chartData.monthly_payment_breakdown ??
chartData.total_cost_breakdown ??
chartData.breakdown ??
chartData.comparison ??
[];
// Pass these arrays to Chart.js, Recharts, ECharts, etc.
const chartLabel = (item) =>
item.label ?? item.month ?? item.year ?? item.n ?? item.x;
const chartValue = (item) =>
item.value ?? item.ending_balance ?? item.y ?? item.total_interest;
const balanceChart = {
labels: balanceSeries.map(chartLabel),
values: balanceSeries.map(chartValue),
};
const breakdownChart = {
labels: breakdown.map(chartLabel),
values: breakdown.map(chartValue),
};
const strategySeries = chartData.payment_strategy_comparison ?? [];
const strategyChart = {
labels: strategySeries.map((item) => item.label),
values: strategySeries.map((item) => item.total_interest),
};
console.log({ balanceChart, breakdownChart, strategyChart });
<?php
$ch = curl_init('https://api.miniwebtool.com/v1/tools/margin-calculator/run');
curl_setopt_array($ch, [
CURLOPT_POST => true,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => [
'Authorization: Bearer mwt_live_YOUR_KEY',
'Content-Type: application/json',
],
CURLOPT_POSTFIELDS => json_encode([
]),
]);
$resp = curl_exec($ch);
curl_close($ch);
print_r(json_decode($resp, true));
require 'net/http'
require 'json'
require 'uri'
uri = URI('https://api.miniwebtool.com/v1/tools/margin-calculator/run')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = (uri.scheme == 'https')
req = Net::HTTP::Post.new(uri)
req['Authorization'] = 'Bearer mwt_live_YOUR_KEY'
req['Content-Type'] = 'application/json'
req.body = {
}.to_json
resp = http.request(req)
puts JSON.parse(resp.body).inspect
package main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
)
func main() {
body, _ := json.Marshal(map[string]interface{}{
,
})
req, _ := http.NewRequest("POST", "https://api.miniwebtool.com/v1/tools/margin-calculator/run", bytes.NewReader(body))
req.Header.Set("Authorization", "Bearer mwt_live_YOUR_KEY")
req.Header.Set("Content-Type", "application/json")
resp, err := http.DefaultClient.Do(req)
if err != nil { panic(err) }
defer resp.Body.Close()
out, _ := io.ReadAll(resp.Body)
fmt.Println(string(out))
}
import java.net.URI;
import java.net.http.*;
var client = HttpClient.newHttpClient();
var req = HttpRequest.newBuilder()
.uri(URI.create("https://api.miniwebtool.com/v1/tools/margin-calculator/run"))
.header("Authorization", "Bearer mwt_live_YOUR_KEY")
.header("Content-Type", "application/json")
.POST(HttpRequest.BodyPublishers.ofString("{}"))
.build();
var resp = client.send(req, HttpResponse.BodyHandlers.ofString());
System.out.println(resp.body());
https://api.miniwebtool.com/v1/tools/margin-calculator/run
Authorization: Bearer <key> and Content-Type: application/json. Copy-paste snippets in 7 languages are under Code examples.
{request_id, tool, tool_version, credits_used, result}. The typed output lives in result.
Calculate gross profit, margin percent, markup percent, and chart-ready revenue breakdown. Use it to add this utility without rebuilding formulas, validation, examples, and documentation.
1 credit per successful call. Failed calls (validation errors, 5xx) don't bill.
Required fields: (none). Full schema at /v1/openapi.json.
Yes — same input, same output, forever. Tool version 2026-04-22; output shape is stable within a major version.
Yes. Successful responses include `result.chart_data` with compact arrays for line or bar charts, so clients can render visuals with Chart.js, Recharts, ECharts, SVG, or canvas without requesting an image.
Yes. Connect to https://api.miniwebtool.com/v1/mcp over the Model Context Protocol. The agent discovers `margin-calculator` with its JSON Schema automatically, so the model can plan while MiniWebtool handles the exact tool result.
JSON with a stable envelope: `{request_id, tool, tool_version, credits_used, result}`. Errors are RFC 7807 `application/problem+json`.
Every endpoint on this site is also exposed via the
Model Context Protocol at
https://api.miniwebtool.com/v1/mcp.
Claude, Cursor, and any MCP-capable agent can discover this tool
(margin-calculator)
and its JSON Schema automatically — no client codegen.
# List tools the agent can call
curl -s https://api.miniwebtool.com/v1/mcp \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' \
| jq '.result.tools[] | select(.name=="margin-calculator")'