NIXX/DEVv1.15.0
ArticlesFavorites
Sign In
Sign In
50+ Free Tools

Simple Online Tools for Everyday Work

Free, fast, no-signup tools for developers and everyday tasks.

API Explorer

Developer

Test and debug REST APIs with ease. Send requests and inspect responses in real time.

Discussion

Join the discussion

Sign in to share your thoughts and engage with the community.

Sign In
Loading comments…

About this tool

What is the API Explorer?

The API Explorer is a browser-based tool for sending HTTP requests and inspecting responses in real time. It lets you test REST API endpoints directly — without installing Postman, writing curl commands, or switching between apps. Enter a URL, choose a method, add headers or a body, and send.

It's designed for developers who want a fast, frictionless way to test an endpoint during development, verify an API integration, or debug a request that isn't behaving as expected.


How to Use the API Explorer

  1. Enter the endpoint URL — paste the full API URL you want to test, including any path parameters.
  2. Select the HTTP method — choose GET, POST, PUT, PATCH, DELETE, or HEAD depending on what the endpoint expects.
  3. Add request headers — include headers like Authorization, Content-Type, or any custom headers required by the API.
  4. Add a request body — for POST and PUT requests, enter your JSON payload in the body field.
  5. Send the request — the tool fires the request from your browser and displays the full response: status code, response headers, and body.

What You Can Do With It

Test public APIs — Explore open APIs (weather, maps, data sources) without writing a single line of code.

Debug authentication issues — Test Bearer tokens, API keys, and Basic Auth headers to confirm your credentials are being sent correctly.

Verify request formatting — Check that your JSON body structure matches what the API expects before writing it into your application.

Inspect response structure — See exactly what fields an API returns so you can map them correctly in your code.

Test different environments — Switch between development, staging, and production endpoints quickly by changing the URL.


Supported Request Types

The API Explorer supports all standard HTTP methods used in REST APIs:

  • GET — retrieve data from an endpoint
  • POST — send data to create a resource
  • PUT / PATCH — update an existing resource
  • DELETE — remove a resource
  • HEAD — retrieve headers only, without a response body

Custom headers and JSON request bodies are supported for all applicable methods.


Privacy

API requests are sent directly from your browser to the target endpoint. No request data, response data, URLs, headers, or authentication tokens are stored or logged on our servers. Your API keys and credentials never leave your device.

Users also viewed

  • JSON Formatter & Validator
  • Color Picker & Palette Generator
  • Find & Replace
  • Text Cleaner
  • Text Diff Checker
  • YouTube Thumbnail Downloader
🇺🇸USD ACCOUNTOpen a free US-based USD accountReceive & save in USD — powered by ClevaSponsoredInterserver Hosting#1 VALUEAffordable, reliable hosting from $2.50/mo99.9% uptimeSponsored

More Developer tools

8

JSON Formatter & Validator

Format, beautify, and validate JSON data online — free JSON linter.

DeveloperFormat & Validate JSON →

Color Picker & Palette Generator

Select colors and get HEX, RGB, HSL values with palette suggestions.

DesignPick a Color →

Find & Replace

Find and replace text in large blocks with regex support and real-time preview.

ContentFind & Replace →

Text Cleaner

Clean and format text with one click using customizable rules.

ContentClean Text →

Text Diff Checker

Compare two texts side-by-side and spot every difference.

ContentCompare Texts →

YouTube Thumbnail Downloader

Download high-resolution YouTube video thumbnails.

MediaDownload YouTube Thumbnail →

State Machine Visualizer

Visualize and interact with finite state machines using JSON configuration.

DeveloperVisualize State Machine →

GitHub Repo Analyzer

Inspect any public GitHub repository — languages, contributors, commit activity, and health metrics.

DeveloperAnalyze GitHub Repository →
|Made with · © 2026|TermsPrivacy
AboutBlogContact

Free, open-source tools for developers and creators · Community driven