Math Calculator API

POST

Evaluate math expressions, convert number bases, and check number properties.

Math Calculator performs mathematical operations including arithmetic, number properties, base conversions, and expression evaluation.

Try it — live request, no key required

Request

POSTapi.apiverve.com/v1/math

Body

operationstring

anumber

bnumber

Verification

Format

No key required to try it. Get a key to use it in your app.

Example

{
  "status": "ok",
  "error": null,
  "data": {
    "result": 15,
    "operation": "add",
    "input": {
      "a": 10,
      "b": 5
    },
    "steps": [
      "10 + 5 = 15"
    ]
  }
}

About the Math Calculator API

All operations return structured responses with input values and results. Handles edge cases like division by zero and number limits.

What people use it for

Number Analysis: Check if numbers are prime, get prime factorization, or compute GCD/LCM
Base Conversion: Convert between decimal, binary, hexadecimal, and octal number systems
Math Operations: Perform calculations with detailed results for application integration
Expression Evaluation: Evaluate mathematical expressions safely on the server side

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON: Default REST response
XML: Markup format
YAML: Human-readable
CSV: Tabular export
GraphQL: Query language
MCP: For AI agents

View all integrations →

Other ways to use Math Calculator

Same data, same APIVerve account, same credit balance — one key works on all of them.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.on VerveKit Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.on VerveSheets Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.on VerveContext

Questions.

Common questions about the Math Calculator API.

Read the docs →

How far does the Starter plan go for mathematical calculations?

Each request costs 2 credits. The Starter plan provides 200,000 credits each month, covering up to 100,000 calculations, which works out to about $0.30 per 1,000 calls. The Free plan includes 200 monthly credits, giving you up to 100 test calls before upgrading.

Which number bases does the base conversion endpoint support?

You can convert directly between decimal, binary, octal, and hexadecimal values. For custom conversions, the baseConvert operation supports any source and target base between base 2 and base 36.

What number properties and factor checks can I run?

You can check whether a number is prime, even, odd, or a palindrome. You can also calculate greatest common divisors, least common multiples, and full prime factorizations that return an array of prime factors alongside a formatted factorization string.

What can I pass to the expression evaluation endpoint?

The endpoint accepts mathematical expressions composed of numbers and standard operators. It parses and computes the expression, returning the numeric result alongside your original input string.

What are the input limits for factorial and Fibonacci calculations?

Factorial calculations accept numbers from 0 to 170. Fibonacci calculations accept sequence indices from n = 0 up to n = 1000.

How does the API handle edge cases like division by zero?

Math Calculator is designed to safely handle boundary conditions such as division by zero and numeric overflow limits. All operations return structured JSON containing your input values and the evaluated result.

Request parameters — POST /v1/math

Sent as JSON in the request body. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.

Required

Parameter	Type	Example	Description
`operation`Required	string	`add`	Operation to perform `addsubtractmultiplydividepowermodulo`
`a`Required	number	`10`	First number
`b`Required	number	`5`	Second number

Example request

curl -X POST "https://api.apiverve.com/v1/math" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"operation":"add","a":10,"b":5}'

Authentication

Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.

Header	When	Value
`x-api-key`Required	Every request	Your API key. Header names are case-insensitive, so `X-API-Key` is the same header.
`Authorization`Alternate	Instead of the above	`Bearer <key>` — for clients that only expose bearer auth. Resolves to the same account and the same billing.
`content-type`Required	POST body	`application/json`

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Response — POST /v1/math

Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.

Sample response

{
  "status": "ok",
  "error": null,
  "data": {
    "result": 15,
    "operation": "add",
    "input": {
      "a": 10,
      "b": 5
    },
    "steps": [
      "10 + 5 = 15"
    ]
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`result`	number	`15`	Result of the operation
`operation`	string	`"add"`	Operation performed
`input`	object	`{...}`
`a`	number	`10`	First input number (not present for power, which echoes base/exponent instead)
`b`	number	`5`	Second input number (not present for power, which echoes base/exponent instead)
`steps`	array	`[10 + 5 = 15]`

Response headers

Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.

Header	What it carries
`x-api-remaining-credits`	Credits left in the current cycle
`x-api-credits-used`	Credits spent in the current cycle
`x-api-max-credits`	The allowance for the cycle
`x-api-version`	Version of the endpoint that answered

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.

Status	Meaning	What to do
`400`	Input was rejected	Read `error`; it names the parameter that has to change.
`401`	Key missing or invalid	Check the header name and the key value.
`403`	Key valid, but not permitted here	A key restriction or an IP allow-list — never a bad key.
`429`	Rate limited, or out of credits	Read `error` to tell them apart, then back off or top up.

What a call costs — 2 credits per call

Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.

Plan	Per month	Credits	Math Calculator calls	Per 1,000 calls
Free	Free	200	100	Free
Starter	$29.99	200,000	100,000	$0.30
Pro	$99.99	1,000,000	500,000	$0.20
Mega	$299.99	4,000,000	2,000,000	$0.15

Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.

Compare all pricing tiers →

Call it from cURL — POST /v1/math

No SDK to install — this is a plain HTTPS call to /v1/math with your key in the x-api-key header. Swap in a real key and it runs as-is.

cURL

1
2

curl "https://api.apiverve.com/v1/math" \
  -H "x-api-key: YOUR_API_KEY"

Resources

GitHubapiverve/math-apiSource, issues and the examples this page is built from.ReferenceMath Calculator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/mathnpm APIVerve.API.MathCalculatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Node.js — POST /v1/math

Install the Node.js SDK, then call the Math Calculator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — npm

npm install @apiverve/math

Node.js

const res = await fetch("https://api.apiverve.com/v1/math", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Resources

npm@apiverve/mathThe published Node.js client, versioned and signed.GitHubapiverve/math-apiSource, issues and the examples this page is built from.ReferenceMath Calculator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

APIVerve.API.MathCalculatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Python — POST /v1/math

No SDK to install — this is a plain HTTPS call to /v1/math with your key in the x-api-key header. Swap in a real key and it runs as-is.

Python

import requests

res = requests.get(
    "https://api.apiverve.com/v1/math",
    headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])

Resources

Also published for

@apiverve/mathnpm APIVerve.API.MathCalculatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from C# / .NET — POST /v1/math

Install the C# / .NET SDK, then call the Math Calculator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — NuGet

dotnet add package APIVerve.API.MathCalculator

C# / .NET

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var json = await client.GetStringAsync("https://api.apiverve.com/v1/math");
Console.WriteLine(json);

Resources

NuGetAPIVerve.API.MathCalculatorThe published C# / .NET client, versioned and signed.GitHubapiverve/math-apiSource, issues and the examples this page is built from.ReferenceMath Calculator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/mathnpm

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Go — POST /v1/math

No SDK to install — this is a plain HTTPS call to /v1/math with your key in the x-api-key header. Swap in a real key and it runs as-is.

req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/math", nil)
req.Header.Set("x-api-key", "YOUR_API_KEY")

res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Resources

Also published for

@apiverve/mathnpm APIVerve.API.MathCalculatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from PHP — POST /v1/math

No SDK to install — this is a plain HTTPS call to /v1/math with your key in the x-api-key header. Swap in a real key and it runs as-is.

PHP

$ch = curl_init("https://api.apiverve.com/v1/math");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-api-key: YOUR_API_KEY"]);

$response = curl_exec($ch);
echo $response;

Resources

Also published for

@apiverve/mathnpm APIVerve.API.MathCalculatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Ruby — POST /v1/math

No SDK to install — this is a plain HTTPS call to /v1/math with your key in the x-api-key header. Swap in a real key and it runs as-is.

Ruby

require "net/http"

uri = URI("https://api.apiverve.com/v1/math")
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = "YOUR_API_KEY"

res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
puts res.body

Resources

Also published for

@apiverve/mathnpm APIVerve.API.MathCalculatorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

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Math Calculator API

Try it — live request, no key required

About the Math Calculator API

What people use it for

Ways to call it

Other ways to use Math Calculator

Questions.

Request parameters — POST /v1/math

Required

Authentication

Response — POST /v1/math

Response fields

Response headers

Errors

What a call costs — 2 credits per call

Call it from cURL — POST /v1/math

Resources

Also published for

Call it from Node.js — POST /v1/math

Resources

Also published for

Call it from Python — POST /v1/math

Resources

Also published for

Call it from C# / .NET — POST /v1/math

Resources

Also published for

Call it from Go — POST /v1/math

Resources

Also published for

Call it from PHP — POST /v1/math

Resources

Also published for

Call it from Ruby — POST /v1/math

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — Math Calculator API

Data Conversion

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