TOTP Generator API

POST

Docs Get a free API key →

Produce standard one-time passwords from any Base32 secret.

TOTP Generator creates time-based one-time passwords compatible with authenticator apps using standard TOTP algorithms.

Try it — live request, no key required

Request

POSTapi.apiverve.com/v1/totpgenerator

Body

secretstring

Verification

Format

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

Example

{
  "status": "ok",
  "error": null,
  "data": {
    "token": "935324",
    "digits": 6,
    "period": 30,
    "timeRemaining": 25,
    "expiresAt": "2025-12-16T22:31:00Z"
  }
}

About the TOTP Generator API

Provides token expiration tracking and remaining time information, compatible with Google Authenticator and other TOTP applications.

What people use it for

2FA Implementation: Implement two-factor authentication systems with TOTP token generation
Authentication Testing: Test TOTP-based authentication flows in development and QA environments
Security Integration: Integrate time-based one-time passwords into security workflows
MFA Systems: Build multi-factor authentication systems with standardized TOTP tokens

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 TOTP Generator

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

Questions.

Common questions about the TOTP Generator API.

Read the docs →

How many tokens does the Free plan cover?

The Free plan provides 200 credits each month, covering 100 token generations at 2 credits per request. Paid usage on the Starter plan works out to about $0.30 per 1,000 calls, providing up to 100,000 tokens per month. There are no overage fees if credits run out.

Do I get token expiration timestamps on the Free plan?

No. The Free plan generates the token and returns the configured digit count and period. The exact expiration timestamp and the count of seconds remaining are premium fields available on any paid subscription.

Is the generated token compatible with Google Authenticator?

Yes. TOTP Generator builds tokens using standard time-based one-time password algorithms, making them fully compatible with Google Authenticator and other TOTP-compliant apps.

Can I configure custom token lengths and time periods?

Yes. You can optionally specify the number of digits for the output code and set a custom validity window in seconds to match your system requirements.

What format does the shared secret require?

The secret parameter must be provided as a Base32-encoded string, which is the standard encoding used in two-factor authentication provisioning.

Request parameters — POST /v1/totpgenerator

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
`secret`Required	string	`JBSWY3DPEHPK3PXP`	Base32-encoded shared secret

Optional

Parameter	Type	Example	Description
`digits`Optional	integer	`6`	Number of digits in token default 6 · range 6-8
`period`Optional	integer	`30`	Time period in seconds default 30 · range 1-300

Example request

curl -X POST "https://api.apiverve.com/v1/totpgenerator" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"secret":"JBSWY3DPEHPK3PXP","digits":6,"period":30}'

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/totpgenerator

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": {
    "token": "935324",
    "digits": 6,
    "period": 30,
    "timeRemaining": 25,
    "expiresAt": "2025-12-16T22:31:00Z"
  }
}

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
`token`	string	`"935324"`	Generated time-based one-time password token
`digits`	number	`6`	Number of digits in the generated token
`period`	number	`30`	Time period configured for token generation
`timeRemaining`Premium	number	`25`	Seconds remaining until token expires
`expiresAt`Premium	string	`"2025-12-16T22:31:00Z"`	ISO 8601 timestamp when token expires

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	TOTP Generator 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/totpgenerator

No SDK to install — this is a plain HTTPS call to /v1/totpgenerator 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/totpgenerator" \
  -H "x-api-key: YOUR_API_KEY"

Resources

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

Also published for

@apiverve/totpgeneratornpm APIVerve.API.TOTPGeneratorNuGet

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/totpgenerator

Install the Node.js SDK, then call the TOTP Generator 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/totpgenerator

Node.js

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

Resources

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

Also published for

APIVerve.API.TOTPGeneratorNuGet

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

Call it from Python — POST /v1/totpgenerator

No SDK to install — this is a plain HTTPS call to /v1/totpgenerator 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/totpgenerator",
    headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])

Resources

Also published for

@apiverve/totpgeneratornpm APIVerve.API.TOTPGeneratorNuGet

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/totpgenerator

Install the C# / .NET SDK, then call the TOTP Generator 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.TOTPGenerator

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/totpgenerator");
Console.WriteLine(json);

Resources

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

Also published for

@apiverve/totpgeneratornpm

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

Call it from Go — POST /v1/totpgenerator

No SDK to install — this is a plain HTTPS call to /v1/totpgenerator 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/totpgenerator", 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/totpgeneratornpm APIVerve.API.TOTPGeneratorNuGet

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

Call it from PHP — POST /v1/totpgenerator

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

PHP

$ch = curl_init("https://api.apiverve.com/v1/totpgenerator");
curl_setopt($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/totpgeneratornpm APIVerve.API.TOTPGeneratorNuGet

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

Call it from Ruby — POST /v1/totpgenerator

No SDK to install — this is a plain HTTPS call to /v1/totpgenerator 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/totpgenerator")
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/totpgeneratornpm APIVerve.API.TOTPGeneratorNuGet

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

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TOTP Generator API

Try it — live request, no key required

About the TOTP Generator API

What people use it for

Ways to call it

Other ways to use TOTP Generator

Questions.

Request parameters — POST /v1/totpgenerator

Required

Optional

Authentication

Response — POST /v1/totpgenerator

Response fields

Response headers

Errors

What a call costs — 2 credits per call

Call it from cURL — POST /v1/totpgenerator

Resources

Also published for

Call it from Node.js — POST /v1/totpgenerator

Resources

Also published for

Call it from Python — POST /v1/totpgenerator

Resources

Also published for

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

Resources

Also published for

Call it from Go — POST /v1/totpgenerator

Resources

Also published for

Call it from PHP — POST /v1/totpgenerator

Resources

Also published for

Call it from Ruby — POST /v1/totpgenerator

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — TOTP Generator API

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