Autonomous API penetration testing

AI-Native API penetration testing for REST and GraphQL. Prancer discovers endpoints, authenticates like a real client, chains findings across calls and validates exploitability with captured responses — eliminating the false positives that make conventional API scanning unusable.

API coverage

• Discovery — endpoint and schema enumeration from OpenAPI/Swagger, GraphQL introspection, Postman collections and observed traffic, including undocumented and shadow endpoints.
• Authentication — OAuth 2.0, JWT, session cookie, form login and fully custom schemes, with multi-role sessions held in parallel.
• Authorization abuse — broken object-level authorization (BOLA), IDOR, broken function-level authorization and privilege-escalation chains proven by replaying one role's token against another's objects.
• Injection and logic — SQL/NoSQL/command injection, SSRF, mass assignment, rate-limit bypass and business-logic abuse, each attempted rather than inferred.

Mapped to OWASP API Security Top 10

Findings roll up against the OWASP API Security Top 10 and OWASP Top 10 2021, alongside PCI DSS 4.0, SOC 2 and ISO 27001:2022 evidence, exported as OCSF 1.1.0 JSON, Markdown and interactive HTML.

Continuous, not quarterly

APIs change every sprint, which is why a point-in-time API pentest is stale before the report is signed. Prancer re-tests on every deploy, so a newly shipped endpoint is exercised the same day it ships. Findings are evidence-graded, so only proven exploitation carries Critical severity and your team triages proof instead of possibilities.

See also unified testing, the SwarmHack engine and API testing documentation. Book an API assessment.