Free APIs Without API Key
Zero-friction public APIs you can call right from your terminal or frontend without account creation, billing verification, or API key configuration.
Overview & Comparison Matrix
6 Endpoints| API Name | Category | Auth Status | Rate Limit | Action |
|---|---|---|---|---|
| World Cities & Coordinates | Hava Durumu ve İklim | ⚡ No Key | High-Speed / Unlimited | View API |
| Global Currency Exchange Rates | Finans ve Borsa | ⚡ No Key | High-Speed / Unlimited | View API |
| Master Pokédex | Hava Durumu ve İklim | ⚡ No Key | High-Speed / Unlimited | View API |
| D&D 5e Spells Compendium | Hava Durumu ve İklim | ⚡ No Key | High-Speed / Unlimited | View API |
| Chemical Elements Periodic Table | Hava Durumu ve İklim | ⚡ No Key | High-Speed / Unlimited | View API |
| Nobel Laureates Archive | Eğitim ve Öğrenme | ⚡ No Key | High-Speed / Unlimited | View API |
All Verified Endpoints (6)
World Cities & Coordinates
Global city search, latitude, longitude, and country codes REST API endpoint.
Global Currency Exchange Rates
Live fiat forex currency exchange rates updated continuously.
Master Pokédex
Complete Pokédex API featuring Pokémon base stats, abilities, and types.
D&D 5e Spells Compendium
Comprehensive compendium of Dungeons & Dragons 5th Edition spells.
Chemical Elements Periodic Table
Detailed physical and atomic properties for chemical elements on the Periodic Table.
Nobel Laureates Archive
Complete official archive of Nobel Prize winners and award citations.
Frequently Asked Questions & Developer Guide
What is a Zero-Auth API?
Zero-Auth APIs allow developers to make HTTP requests without passing an Authorization header, bearer token, or API key query parameter.
Are there rate limits on keyless APIs?
Yes, providers often enforce IP-based rate limiting to prevent abuse. Specific rate limits are documented on each API detail page.
Can I query them from client-side React / Next.js apps?
Yes. Most endpoints support CORS, and you can also route calls through FreeAPI Smart Edge Gateway for instant CORS handling.