API security assessment helps to identify and classify the potential vulnerabilities and security risks of Application Programming Interfaces (APIs).

OWASP Top 10 API Vulnerabilities
1. API1 Broken Object-Level Authorization
2. API2 Broken User Authentication
3. API3 Excessive Data Exposure
4. API4 Lack of Resources and Rate Limiting
5. API5 Broken Function-Level Authorization
6. API6 Mass Assignment
7. API7 Security Misconfiguration
8. API8 Injection
9. API9 Improper Asset Management
10. API10 Insufficient Logging and Monitoring