OSV API vs VPNDetection API

Two free Security APIs compared on access, reliability and developer ratings, using data from our daily health checks.

The verdict

Choose OSV API if its data fits your use case better; on access and reliability it's level with VPNDetection API.
Choose VPNDetection API if its data fits your use case better; on access and reliability it's level with OSV API.

	OSV API	VPNDetection API
What it does	Open source vulnerability database and distributed triage infrastructure.	Check whether an IPv4 or IPv6 address belongs to VPN infrastructure, no key needed.
Provider	OSV	VPNDetection
API key	Not needed	Not needed
HTTPS	Yes	Yes
CORS (browser calls)	Yes	Yes
Status today	Online · 608 ms	Online · 726 ms
Uptime (30 days)	Up	Up
Developer rating	Not rated yet	Not rated yet
Price	Free / free tier	Free / free tier

Open source vulnerability database and distributed triage infrastructure.

Information about the OSV database and API.

Strengths

Check whether an IPv4 or IPv6 address belongs to VPN infrastructure, no key needed.

The VPNDetection HTTP API tells you what we know about an IP address: one request, one address, and whether it belongs to VPN infrastructure.

Strengths

Prototyping or a tutorial? Pick the one that needs no API key (both qualify).
Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
Still unsure? Both are free to try: send one request to each and compare the data you get back.