Tier 1 · Learn
Naked Labs
One tiny API, one vulnerability, one flag. Drill each OWASP API risk in isolation until the technique is automatic.
12 labs →
Tier 2 · Hunt
Methodology Labs
Realistic APIs full of legitimate features and decoys. Practice a repeatable method to find what's actually broken.
6 labs →
Tier 3 · Prove
Exam Labs
Full multi-vulnerability APIs, exam conditions. Enumerate the whole surface and capture every flag — no hand-holding.
3 labs →