Science & Math
No authHTTPSCORS
Science & Math
Toolalize API
Not rated yet · Be the first to rate itUnit and live currency conversion with NIST SI factors, no key needed.
Toolalize API is a free Science & Math API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
- Authentication
- None required
- HTTPS
- Yes
- CORS
- Yes
- Category
- Science & Math
- Uptime (30 days)
- 100%
Visit documentation ↗toolalize.com
Online · 1704 msTested Nov 15, 2026 · checked dailyIs it down? Status & uptime
Key facts
- No API key needed
- 100% uptime (30 days)
- Returns JSON at its URL
- Callable from the browser (CORS)
- HTTPS
Quick start
Toolalize API returns JSON at toolalize.com with no API key. Verified by our health check on Nov 15, 2026.
curl -s "https://toolalize.com/openapi.json"const res = await fetch("https://toolalize.com/openapi.json");
if (!res.ok) throw new Error(`HTTP ${res.status}`);
const data = await res.json();
console.log(data);import requests
res = requests.get("https://toolalize.com/openapi.json", timeout=10)
res.raise_for_status()
data = res.json()
print(data)
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Ratings & reviews
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Toolalize API FAQ
Is the Toolalize API free?
Yes. The Toolalize API is listed in the Science & Math category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Does the Toolalize API require an API key?
No. The Toolalize API requires no authentication, so you can start making requests without signing up.
Can I call the Toolalize API from the browser?
Yes. The Toolalize API supports CORS, so front-end JavaScript can call it directly.
Does the Toolalize API support HTTPS?
Yes. The Toolalize API is served over HTTPS, so it's safe to use in production.
Maintain the Toolalize API? Add a badge
Show that Toolalize is listed on Public APIs. The badge displays its developer rating once it has one.
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