Blog
Deep dives on APIs.
- API Health Check Endpoints: What Real Public APIs ExposeWhat a health check endpoint should return, and what 15 public APIs exposed on 29 October 2026: 7 vendor routes answered 200, 0 of 4 at /health.
- Public API Directories: Where to Find Free APIsPublic API directories compared on 29 October 2026: what freepublicapis, APIs.guru, the GitHub lists, Public APIs and RapidAPI offer, and which still update.
- Cool Free APIs for Projects: 21 Called Without a KeyCool free APIs for a side project or demo app: we called 21 without a key on 29 October 2026 and recorded which ones a browser can fetch directly.
- Is There a Google Jobs API? What to Use Instead in 2026Google Jobs API: Google offers no public search API for Google for Jobs. We called 9 job APIs on 29 October 2026, and 5 answered with no key.
- What Is a Public API? Definition, Examples and How to TellA public API is one any developer can call without a contract. Four live calls and our catalog data show what public means: keyless, keyed or locked.
- Best SerpApi Alternatives in 2026, RankedThe best SerpApi alternatives in 2026, ranked by price per search, free tier and data source, with every price read from the vendor's own page in October 2026.
- API Response Time: What 99 Public APIs Actually DoWe timed 99 live public APIs. The median answered in 446 ms, the server's own share was 195 ms, and distance mattered more than code. What counts as good.
- The State of Public APIs 2026: Data From 1,580 APIsWe measured all 1,580 public APIs in our directory. How many need a key, OAuth or nothing, which work from a browser, what is growing, and how many are down.
- API Caching: What 87 Public APIs Actually SendWe read the cache headers of 87 live public APIs. 31% send none, and only 37% answer a conditional request with a 304. What that means and how to cache them.
- Best SendGrid Alternatives in 2026, RankedThe best SendGrid alternatives in 2026, ranked, with every free tier and entry price read live from the vendor's own pricing page in October 2026.