api-fuzz-agent

To find API security weaknesses, structured fuzzing analyzes endpoints, parameters, responses, and authorization behavior. This approach replaces blind fuzzing with parameter-aware testing and response mining to systematically uncover vulnerabilities during security assessments.

Semantic fuzzing combines JavaScript-derived parameter requirements with harvested response values. This data linkage uncovers hidden relationships and security issues, ensuring API parameter analysis is driven by actual data flow rather than random payload injection.

To test for IDOR vulnerabilities during an API security assessment, you analyze endpoint parameter maps and track harvested values across responses. This controlled testing procedure evaluates authorization behavior to detect improper access control weaknesses.

Yes, you can use this approach for endpoint discovery in authorized bug bounty programs. It prioritizes high-value targets, validates request methods, and investigates undocumented endpoints by applying structured workflows to your discovered endpoint parameter maps.

To start an API endpoint coverage test, you need an endpoint parameter map as input. This mapping drives the structured security assessment, enabling request generation, response analysis, and controlled testing procedures for systematic evaluation.