API Security Tester

Scan any API endpoint for common security misconfigurations. Check CORS, authentication, rate limiting, and more.

Monitor Your APIs 24/7

Security testing is just the start. ObserveOne monitors your APIs around the clock: uptime, performance, and security in one dashboard.

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Why API Security Matters

APIs are the backbone of modern applications, and the #1 attack vector. Misconfigured CORS policies, missing authentication, and absent rate limiting are among the most common vulnerabilities in production APIs. A single exposed endpoint can compromise your entire system.

What This Tool Checks

CORS Policy

Verifies that cross-origin requests are properly restricted and not open to wildcard origins.

Authentication

Checks if the endpoint requires authentication or is publicly accessible without credentials.

Rate Limiting

Detects rate limiting headers that protect against brute force and denial-of-service attacks.

Information Leakage

Checks for exposed server technology headers that attackers can use to identify vulnerabilities.