Hoppscotch vs Kroki
Same instrument, two spec sheets — measured, not claimed.
Hoppscotch vs Kroki: common questions
Which is more reliable, Hoppscotch or Kroki?
On our scheduled checks, Kroki leads on measured uptime — Hoppscotch at —% versus Kroki at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Hoppscotch and Kroki need an API key?
Neither needs a paid key — Hoppscotch is callable with no signup, and Kroki is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Hoppscotch and Kroki from the browser?
Yes — both Hoppscotch and Kroki send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Hoppscotch and Kroki free for commercial use?
Hoppscotch has unclear commercial terms, and Kroki has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.