API testing

API penetration testing, on demand

PentestMe tests your REST and GraphQL APIs against the OWASP API Security Top 10, including the cross-user authorization flaws a scanner cannot find, and returns a validated report the same day.

We discover your endpoints from a spec or by crawling, then test each one with real authenticated identities so access-control findings are proven, not guessed.

We find the endpoints first

An API test is only as good as its coverage. PentestMe ingests your OpenAPI or GraphQL schema when you have one, and crawls the application to discover the endpoints the app actually calls when you do not, so hidden and undocumented routes are in scope too, not just the ones in the docs.

What an API pentest finds

We test against the OWASP API Security Top 10, with particular focus on the authorization flaws that make up most real API breaches.

Broken object-level authorization (BOLA)

The number-one API risk: one user reaching another user's objects. We test it across real identities and prove it with the request and response.

Broken authentication

Weak or missing authentication on endpoints, flawed token handling, and JWT issues that let a caller become someone they are not.

Broken function-level authorization (BFLA)

Regular users reaching admin-only or privileged functions because the endpoint checks who you are but not what you are allowed to do.

Excessive data exposure

Endpoints that return more fields than the client needs, leaking personal or sensitive data that a caller can simply read.

Unrestricted resource consumption

Missing rate limiting and anti-automation controls that allow brute force, scraping and denial-of-wallet abuse.

SSRF and injection

Server-side request forgery and injection reachable through API parameters, tested with payloads and confirmed by the response.

Cross-user testing with real identities

Most API breaches are authorization failures: a valid user asks for data or actions that belong to someone else. These are invisible to a single-user scan. PentestMe tests with more than one authenticated identity, so it can prove that user A can reach user B's data or admin-only functions, and it captures the exact request and response as evidence you can hand straight to your developers.

Test your API free

Run a real, validated API pentest on your own endpoints before you pay anything. No credit card.

Start your free pentest