Developer Utilities API

What it does

Developer Utilities gives you a small set of utility endpoints for common backend and integration tasks: parse cron expressions, convert timestamps, inspect user-agent strings, list HTTP status codes, and generate UUIDv4 values.

Send a cron expression to /security/cron and get back whether it parsed, a plain-language description, and the expression split into minute, hour, dayOfMonth, month, and dayOfWeek fields. Use /security/timestamp to convert a string or number into ISO 8601 UTC, Unix seconds, Unix milliseconds, and a human-readable UTC value, with an error field when the input is invalid.

If you need request metadata, /security/user-agent accepts a ua string and returns the raw string plus browser, browserVersion, os, device, and whether it is a known bot. /security/http-status returns a complete list of HTTP status codes with their phrase and category, which is useful for docs, observability tooling, and internal dashboards.

For generating identifiers, /security/uuid creates one or more UUIDv4 values, returning a single string for count 1 or an array when you request multiple values. It fits well in admin tools, debugging workflows, schedulers, and service integrations where you need lightweight utility responses without building these parsers yourself.

▣ ENDPOINT 01 / 05

POST

Cron Expression Explainer

https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/cron

QUICKSTART

GUIDE

Quickstart

Run this to check a cron expression with the required JSON body.

curl -X POST "https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/cron" \
  -H "apy-token: $APY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"expression":"0 */6 * * *"}'

What you'll get back

The live response to the request above:

{
  "tool": "Cron builder client and server side from freedailypro",
  "valid": true,
  "expression": "0 */6 * * *",
  "description": "At 0, past every 6 hours, on every day of the month, in every month, on every day of the week.",
  "fields": {
    "minute": "0",
    "hour": "*/6",
    "dayOfMonth": "*",
    "month": "*",
    "dayOfWeek": "*"
  }
}

TRY ITLIVE · 10 ATOMS

API key

Loading your default key…

The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Checks a standard 5-field cron expression (minute, hour, day of month, month, day of week) and explains it in plain language, with each field shown separately. Use it to understand or double-check a schedule before adding it to a job scheduler.

Request Body

Parameter	Type	Mandatory	Description
expression	String	Yes	Cron expression input.

Response

A successful call returns a JSON object with these fields:

Parameter	Type	Description
tool	String	Name of the tool that produced the response.
valid	Boolean	`true` if the expression was parsed.
expression	String	The cron expression (echoes the request).
description	String	Plain-language description of the schedule.
fields	Object	The expression split into its five fields.
fields.minute	String	Minute field.
fields.hour	String	Hour field.
fields.dayOfMonth	String	Day-of-month field.
fields.month	String	Month field.
fields.dayOfWeek	String	Day-of-week field.

▣ ENDPOINT 02 / 05

POST

Unix Timestamp Converter

https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/timestamp

QUICKSTART

GUIDE

Quickstart

Send the required input value to generate a timestamp-related response.

curl -X POST "https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/timestamp" \
  -H "apy-token: $APY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"input":"1700000000"}'

What you'll get back

The live response to the request above:

{
  "tool": "Timestamp converter client and server side from freedailypro",
  "unixSeconds": 1700000000,
  "unixMilliseconds": 1700000000000,
  "iso": "2023-11-14T22:13:20.000Z",
  "utc": "Tue, 14 Nov 2023 22:13:20 GMT"
}

TRY ITLIVE · 10 ATOMS

API key

Loading your default key…

The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Converts a date or time into all common formats at once. Send Unix seconds, Unix milliseconds or a date string, and get back Unix seconds, Unix milliseconds, an ISO 8601 string and a human-readable UTC date. All results are in UTC. Use it to read timestamps from logs or databases, or to convert dates for APIs.

Request Body

Parameter	Type	Mandatory	Description
input	String	Yes	Timestamp to convert: Unix seconds, Unix milliseconds, or a date string such as `2026-10-29T10:00:00Z`.

Response

A successful call returns a JSON object with these fields:

Parameter	Type	Description
tool	String	Name of the tool that produced the response.
unixSeconds	Number	Unix time in seconds.
unixMilliseconds	Number	Unix time in milliseconds.
iso	String	ISO 8601 date and time in UTC.
utc	String	Human-readable UTC date and time.
error	String	Error message. Present only when the input is invalid, e.g. "Invalid timestamp or date string".

If the input can't be read as a date, the API returns {"error":"Invalid timestamp or date string"}.

▣ ENDPOINT 03 / 05

POST

User-Agent Parser

https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/user-agent

QUICKSTART

GUIDE

Quickstart

Send a user agent string to check or process it.

curl -X POST "https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/user-agent" \
  -H "apy-token: $APY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"ua":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36"}'

What you'll get back

The live response to the request above:

{
  "tool": "User agent parser client and server side from freedailypro",
  "result": {
    "raw": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36",
    "browser": "Chrome",
    "browserVersion": "123.0.0.0",
    "os": "Windows 10/11",
    "device": "desktop",
    "isBot": false
  }
}

TRY ITLIVE · 10 ATOMS

API key

Loading your default key…

The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Parses a browser user-agent string and returns the browser name and version, operating system, device type (such as desktop or mobile) and whether the request comes from a known bot or crawler. Use it for analytics, logging, device detection or blocking bots.

Request Body

Parameter	Type	Mandatory	Description
ua	String	Yes	The user agent string to parse.

Response

A successful call returns a JSON object with these fields:

Parameter	Type	Description
tool	String	Name of the tool that produced the response.
result	Object	Parsed user-agent details.
result.raw	String	The user-agent string (echoes the request).
result.browser	String	Browser name.
result.browserVersion	String	Browser version.
result.os	String	Operating system.
result.device	String	Device type, e.g. `desktop` or `mobile`.
result.isBot	Boolean	`true` if the user agent is a known bot or crawler.

▣ ENDPOINT 04 / 05

GET

HTTP Status Codes List

https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/http-status

QUICKSTART

GUIDE

Quickstart

Check the HTTP status helper with a simple GET request.

curl -X GET "https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/http-status" \
  -H "apy-token: $APY_TOKEN"

What you'll get back

The live response to the request above:

{
  "tool": "Http status reference client and server side from freedailypro",
  "result": [
    {
      "code": 100,
      "phrase": "Continue",
      "category": "Informational"
    },
    {
      "code": 101,
      "phrase": "Switching Protocols",
      "category": "Informational"
    },
    ...
  ]
}

TRY ITLIVE · 10 ATOMS

API key

Loading your default key…

The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Returns the full list of HTTP status codes, each with its standard reason phrase (for example 404 Not Found) and category (Informational, Success, Redirection, Client Error or Server Error). No input is needed. Use it to show readable error messages or to build documentation and debugging tools.

Response

A successful call returns a JSON object with these fields:

Parameter	Type	Description
tool	String	Name of the tool that produced the response.
result	Array of Object	All HTTP status codes.
result[].code	Number	Status code.
result[].phrase	String	Standard reason phrase.
result[].category	String	Status class, e.g. `Informational` or `Client Error`.

▣ ENDPOINT 05 / 05

POST

UUID v4 Generator

https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/uuid

QUICKSTART

GUIDE

Quickstart

Generate a UUID by sending the required count in the JSON body.

curl -X POST "https://api.eu.apyhub.com/freedailypro/developer-utilities-api/security/uuid" \
  -H "apy-token: $APY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"count":1}'

What you'll get back

The live response to the request above:

{
  "tool": "Uuid generator client and server side from freedailypro",
  "result": "ad9120ef-8b84-46fb-bb3b-6293a176e468"
}

TRY ITLIVE · 10 ATOMS

API key

Loading your default key…

The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Generates random version 4 UUIDs, the standard format for unique IDs in databases, APIs and distributed systems. Request one by default, or up to 1,000 at once with count.

Request Body

Parameter	Type	Mandatory	Description
count	Number	No	Number of UUIDs to generate. Minimum: 1, maximum: 1000. Default: `1`.

Response

A successful call returns a JSON object with these fields:

Parameter	Type	Description
tool	String	Name of the tool that produced the response.
result	String or Array of String	The generated UUID (v4). A single string when `count` is 1, otherwise an array of strings.

result is a single string when count is 1, and an array of strings when count is more than 1.

▣ COMMON ERRORS

Errors any endpoint can return

400bad_request

Required parameter missing or malformed body.

401unauthorized

API key missing, revoked, or not authorized for this service.

429rate_limited

Your plan's per-second rate exceeded. Retry with exponential backoff.

503upstream_busy

Backend temporarily unavailable. Try again in a few seconds.

Similar APIs

Closest matches in the catalog based on this service.

CALLDescribe Cron APIDosvak LLC CALLGenerate UUID APIDosvak LLC CALLAdvanced Schedule Cron APInick creighton CALL Text Utilities API FreeDailyPro

From the blog

Reads that touch this API.

Why Utility API as a Service Is a Dev Tool EssentialJul 9, 2026 Exploring the world of Software Utility APIsJul 9, 2026 HTTP Status Codes: A Developer's Cheat Sheet (With Fixes for the Common Errors)Aug 5, 2026 The API Sprawl Problem in Ecommerce: How Teams Lose Time to Utility CodeAug 5, 2026