Interactive Sandbox

API Playground

Test real public APIs directly in your browser without installing Postman. Configure headers, inspect response payloads, and test your integration flows instantly.

Popular Public APIs

31 services found

Mock Data

JSONPlaceholder

https://jsonplaceholder.typicode.com

Free, reliable fake REST API for testing and prototyping with zero configuration.

Entertainment

PokéAPI

https://pokeapi.co/api/v2

All the Pokémon data you will ever need in one place, easily accessible via clean REST endpoints.

E-commerce

DummyJSON

https://dummyjson.com

A comprehensive fake REST API for products, users, recipes, posts, carts, and more.

Authentication

ReqRes

https://reqres.in/api

A robust user authentication and directory REST API ready to respond with realistic HTTP status codes.

Development

GitHub API

https://api.github.com

The official public GitHub REST API. Inspect users, repositories, and platform status.

Weather

Weather API

https://api.open-meteo.com/v1

The official free Open-Meteo Weather API. Retrieve live weather forecasts, historical observations, and atmospheric metrics.

Crypto

CoinGecko Crypto API

https://api.coingecko.com/api/v3

Free, public API for real-time and historical cryptocurrency assets, markets, rates, and exchange tracking.

Finance

Frankfurter Currency Exchange API

https://api.frankfurter.app

Free, open-source API for current and historical foreign exchange rates published by the European Central Bank.

Geographic Data

REST Countries API

https://countries.dev

Test keyless geographic queries to fetch country data, local currencies, languages, and border maps instantly.

Aerospace & Science

ISS Live Tracking API

https://api.wheretheiss.at/v1

Track the real-time orbital coordinates, velocity, and exact global altitude vectors of the International Space Station keylessly.

Books & Literature

Open Library Book API

https://openlibrary.org

Search across millions of cataloged works, editions, author biographies, and dynamic book metadata schemas.

Payments

Stripe Test API

https://api.stripe.com/v1

Process mock/live payments, manage customers, and simulate refunds with Stripe REST API endpoints.

Communications

Twilio SMS API

https://api.twilio.com/2010-04-01

Send SMS notifications, verify phone numbers, and fetch message status logs worldwide.

Geolocation

Google Maps API

https://maps.googleapis.com/maps/api

Geocode addresses, lookup local places, fetch routing directions, and calculate ground elevation.

Media & Music

Spotify Web API

https://api.spotify.com/v1

Explore artists, search tracks, and retrieve albums or playback queue simulations using Spotify Web API endpoints.

Information & Media

NewsAPI

https://newsapi.org/v2

Fetch top headlines, search worldwide news articles, and filter reports by source, category, or country.

Geolocation

IP Geolocation API

https://ipapi.co

Resolve IP addresses to physical coordinates, postal codes, ISPs, timezone configurations, and regional data.

AI & LLM

OpenAI API

https://api.openai.com/v1

The industry-standard AI platform. Create chat completions, generate images, convert text to speech, and utilize embedding vectors.

AI & LLM

Google Gemini API

https://generativelanguage.googleapis.com/v1beta

Access Google’s flagship multimodal AI models for content generation, structured outputs, code analysis, and system prompting.

AI & LLM

Groq Cloud AI API

https://api.groq.com/openai/v1

Lightning-fast inference endpoints running open-weights models (Llama 3, Mixtral, Gemma) at ultra-low latency.

AI & LLM

Hugging Face Inference API

https://api-inference.huggingface.co/models

Instantly query over 100,000 open-source models for text generation, embeddings, sentence-similarity, and image classification.

Database

Supabase REST API

https://your-project.supabase.co/rest/v1

Perform CRUD operations directly on your PostgreSQL tables using auto-generated PostgREST APIs.

Email & Comm

Resend Email API

https://api.resend.com

Modern email service with developer-first API interface, high deliverability, and instant response times.

Email & Comm

SendGrid Mail API

https://api.sendgrid.com/v3

Reliable, scalable cloud-based email delivery platform that handles transactional and marketing emails.

Database

Firebase REST API

https://firestore.googleapis.com/v1

Interact with Firestore Database documents or Realtime Database natively via standardized JSON REST endpoints.

Weather & Science

Open-Meteo Weather API

https://api.open-meteo.com/v1

Free, open-source weather API with high-precision local weather forecasts, historical data, and air quality metrics without API keys.

Utilities

QR Code Generator API

https://api.qrserver.com/v1

Instantly generate high-quality vector and raster QR Codes for URLs, text, wifi networks, and contact cards.

Reference & Books

Wikipedia MediaWiki API

https://en.wikipedia.org/api/rest_v1

Search articles, fetch page summaries, retrieve images, and obtain structured metadata from the world’s largest open encyclopedia.

Media & Video

Unsplash Images API

https://api.unsplash.com

Search and retrieve millions of ultra-high-resolution, beautifully curated photos with full author attribution, download stats, and collections.

Media & Video

TMDB Movies & TV

https://api.themoviedb.org/3

Query a world-class movies, TV series, actors, ratings, and popular culture database with zero setup hurdles using automatic proxy-simulator failover.

Entertainment

JokeAPI

https://v2.jokeapi.dev

A free, highly customizable REST API providing single and twopart jokes segmented by programming, dark, pun, spooky, and christmas categories.

Why use LearnHubly API Playground?

Browser Based

Run requests directly from your browser. Zero downloads, zero configurations, zero complexity.

Free

Totally free to use. Test endpoint payload structures without paying for premium licenses.

No Signup

Jump right into testing without signing up, generating profiles, or filling out feedback forms.

Fast Response

Enjoy rapid testing of public endpoints, real response timings in ms, and clean payload formatting.

Generate Models

Convert raw JSON payloads instantly into TypeScript interfaces, Python classes, Kotlin data models, or Java structures.

Export Code Samples

Instantly generate clean connection code snippets in 8 modern programming languages including Axios, Fetch, Python, and cURL.

Frequently Asked Questions

Q:How does the API Playground execute requests?

All requests are executed directly from your web browser using standard client-side Fetch APIs. This ensures that your local network environment, cookies, and tokens behave exactly as they would in your real front-end application code.

Q:What is CORS, and why are some requests blocked?

Cross-Origin Resource Sharing (CORS) is a browser security protocol that prevents scripts on one website from reading data on another domain unless explicitly authorized. The five public APIs in our catalog (JSONPlaceholder, PokéAPI, DummyJSON, ReqRes, GitHub) have CORS headers enabled, making them fully testable in any browser client.

Q:Can I test my own private local APIs here?

Yes! Because requests are sent entirely from your local browser, you can enter any custom URL path pointing to localhost (e.g. http://localhost:8080/api/users) directly into the playground client, provided your local development server is configured with appropriate CORS access settings.

Q:Does LearnHubly log or store my API payloads?

Absolutely not. Since the playground operates completely in your local browser sandbox, all URLs, custom headers, tokens, request bodies, and responses exist entirely in client-side memory and are never transmitted to LearnHubly servers.