GUID Generator API

GET

Create RFC 4122 unique IDs in the format your system needs.

GUID Generator creates RFC 4122 version 4 GUIDs in standard, uppercase, hyphen-free, or brace-wrapped formats. Pass a count and formatting style to receive a batch of unique IDs matching your structural requirements.

Try it — live request, no key required

Request

GETapi.apiverve.com/v1/guidgenerator

Verification

Format

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

Example

{
  "status": "ok",
  "error": null,
  "data": {
    "guids": [
      "099FD1E4-60FD-4749-9B61-53A265F52579",
      "D68CA374-C822-40E4-9948-CE7A5D5FC76A",
      "F6DAD45F-A904-4007-89DF-8F5C76184910"
    ],
    "count": 3,
    "format": "uppercase",
    "version": 4,
    "variant": "RFC 4122"
  }
}

About the GUID Generator API

GUID Generator works by creating random 128-bit identifiers following the RFC 4122 UUID version 4 specification. Supports multiple output formats including standard, uppercase, hyphen-less, and brace-enclosed.

What people use it for

Database Records: Generate unique primary keys and identifiers for database records and entities
Session Management: Create unique session identifiers for web applications and APIs
File Naming: Generate unique filenames and resource identifiers to prevent conflicts
Transaction IDs: Create unique transaction and request identifiers for tracking and logging

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 GUID 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 Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.on VerveSheets

Questions.

Common questions about the GUID Generator API.

Read the docs →

What output formats can I request for generated GUIDs?

GUID Generator supports several standard presentation styles. You can generate identifiers formatted as standard hyphenated strings, uppercase strings, hyphen-less strings, or strings enclosed in curly braces.

Can I generate multiple GUIDs in a single call?

Yes. You can use the count parameter to request multiple identifiers in one request. The response returns an array containing all generated GUID strings alongside the total count and applied format.

Does the generator follow official RFC standards?

Yes. All identifiers are 128-bit values created strictly following the RFC 4122 UUID version 4 specification for randomly generated unique identifiers.

Do I get the UUID version and variant on the Free plan?

No. The version and variant metadata fields are premium attributes available only on paid plans. Free plan responses include the generated GUID array, count, and format, while any paid plan unlocks the version and variant confirmation.

How far does the Starter plan go for generating GUIDs?

The Starter plan covers 100,000 calls each month at 2 credits per call, which works out to about $0.0003 per call or $0.30 per 1,000 calls. If you are experimenting before subscribing, the Free plan provides 100 calls per month.

Request parameters — GET /v1/guidgenerator

Sent in the query string. 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.

Optional

Parameter	Type	Example	Description
`count`Optional	integer	`3`	Number of GUIDs to generate default 1 · range 1-100
`format`Optional	string	`uppercase`	Output format `defaultuppercasenohyphensbraces` default default

Example request

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curl "https://api.apiverve.com/v1/guidgenerator?count=3&format=uppercase" \
  -H "x-api-key: YOUR_API_KEY"

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.

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 — GET /v1/guidgenerator

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": {
    "guids": [
      "099FD1E4-60FD-4749-9B61-53A265F52579",
      "D68CA374-C822-40E4-9948-CE7A5D5FC76A",
      "F6DAD45F-A904-4007-89DF-8F5C76184910"
    ],
    "count": 3,
    "format": "uppercase",
    "version": 4,
    "variant": "RFC 4122"
  }
}

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
`guids`	array	`[099FD1E4-60FD-4749-9B61-53A265F52579, ...]`	Array of generated GUID strings in requested format
`count`	number	`3`	Total number of GUIDs generated in the response
`format`	string	`"uppercase"`	Output format applied to generated GUIDs
`version`Premium	number	`4`	UUID version used for GUID generation
`variant`Premium	string	`"RFC 4122"`	UUID variant standard followed by generated GUIDs

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	GUID 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 — GET /v1/guidgenerator

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

cURL

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2

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

Resources

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

Also published for

@apiverve/guidgeneratornpm apiverve-guidgeneratorPyPI APIVerve.API.GUIDGeneratorNuGet

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

Call it from Node.js — GET /v1/guidgenerator

Install the Node.js SDK, then call the GUID 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/guidgenerator

Node.js

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

Resources

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

Also published for

apiverve-guidgeneratorPyPI APIVerve.API.GUIDGeneratorNuGet

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

Call it from Python — GET /v1/guidgenerator

Install the Python SDK, then call the GUID Generator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — PyPI

pip install apiverve-guidgenerator

Python

import requests

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

Resources

PyPIapiverve-guidgeneratorThe published Python client, versioned and signed.GitHubapiverve/guidgenerator-apiSource, issues and the examples this page is built from.ReferenceGUID Generator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/guidgeneratornpm APIVerve.API.GUIDGeneratorNuGet

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

Call it from C# / .NET — GET /v1/guidgenerator

Install the C# / .NET SDK, then call the GUID 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.GUIDGenerator

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

Resources

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

Also published for

@apiverve/guidgeneratornpm apiverve-guidgeneratorPyPI

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

Call it from Go — GET /v1/guidgenerator

No SDK to install — this is a plain HTTPS call to /v1/guidgenerator 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/guidgenerator", 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/guidgeneratornpm apiverve-guidgeneratorPyPI APIVerve.API.GUIDGeneratorNuGet

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

Call it from PHP — GET /v1/guidgenerator

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

PHP

$ch = curl_init("https://api.apiverve.com/v1/guidgenerator");
curl_setopt($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/guidgeneratornpm apiverve-guidgeneratorPyPI APIVerve.API.GUIDGeneratorNuGet

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

Call it from Ruby — GET /v1/guidgenerator

No SDK to install — this is a plain HTTPS call to /v1/guidgenerator 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/guidgenerator")
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/guidgeneratornpm apiverve-guidgeneratorPyPI APIVerve.API.GUIDGeneratorNuGet

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

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GUID Generator API

Try it — live request, no key required

About the GUID Generator API

What people use it for

Ways to call it

Other ways to use GUID Generator

Questions.

Request parameters — GET /v1/guidgenerator

Optional

Authentication

Response — GET /v1/guidgenerator

Response fields

Response headers

Errors

What a call costs — 2 credits per call

Call it from cURL — GET /v1/guidgenerator

Resources

Also published for

Call it from Node.js — GET /v1/guidgenerator

Resources

Also published for

Call it from Python — GET /v1/guidgenerator

Resources

Also published for

Call it from C# / .NET — GET /v1/guidgenerator

Resources

Also published for

Call it from Go — GET /v1/guidgenerator

Resources

Also published for

Call it from PHP — GET /v1/guidgenerator

Resources

Also published for

Call it from Ruby — GET /v1/guidgenerator

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — GUID Generator API

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