My IP API vs Open Library
Same instrument, two spec sheets — measured, not claimed.
My IP API vs Open Library: common questions
Which is more reliable, My IP API or Open Library?
On our scheduled checks, Open Library leads on measured uptime — My IP API at 69.4% versus Open Library at 86.1% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, My IP API or Open Library?
My IP API has the lower median latency in our checks — My IP API responds in 300 ms versus Open Library at 1121 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do My IP API and Open Library need an API key?
Neither needs a paid key — My IP API is callable with no signup, and Open Library is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call My IP API and Open Library from the browser?
Only Open Library is browser-friendly — it returns CORS headers over HTTPS. My IP API needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are My IP API and Open Library free for commercial use?
My IP API has unclear commercial terms, and Open Library 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.