Protect the APIs your business runs on

    Ensure the security of your APIs with our comprehensive penetration testing services.

    Delivered by certified consultants

    OSCPOSCE³CRESTCRTOOSWEBurp Suite Certified
    REST
    GraphQL
    gRPC
    Authorisation
    Rate Limiting
    Data Exposure

    Trusted by security teams around the world

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    Revolut logoRevolut
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    Why choose Pentestly for API Testing?

    OWASP API Top 10

    Assess authentication, authorization, rate limiting, input validation and excessive data exposure.

    Spec-Driven Testing

    Use OpenAPI/Swagger to enumerate endpoints, parameters and security requirements.

    Logic & Abuse Cases

    Test IDORs, mass assignment, privilege escalation and business logic flaws.

    Reporting & PoCs

    Clear risk ratings, reproducible PoCs and remediation guidance for developers.

    How our API Test Works

    Step 1

    Scoping

    Collect specs, test accounts and environments; define rate limits and safe data handling.

    Step 2

    Enumeration

    Discover endpoints from specs and traffic; map auth flows and dependencies.

    Step 3

    Testing

    Automated and manual tests covering authZ, validation and logic defects.

    Step 4

    Report & Retest

    Actionable remediation, developer tips and retest support.

    Outcomes

    API penetration testing focused on broken authorisation

    Secure APIs aligned to OWASP API Top 10

    Fewer authZ/IDOR defects reaching production

    Developer-ready PoCs and fixes

    Improved specs and security controls

    Get started

    Ready to Secure Your APIs?

    Speak directly with a consultant to scope your engagement and get clear, practical guidance on the right testing approach.