APISec Platform vs WuppieFuzz

APISec Platform is an application security tool for validating exploits against APIs and applications. It discovers applications, builds a dynamic model of their behavior, and runs attacker-like tests at runtime. The model can capture endpoints, parameters, authentication flows, roles, permissions, object ownership, and business logic without documentation or developer interviews. Tests cover business logic, data access, permissions, configuration, infrastructure, and controls such as injection and token handling. For validated exploits, the platform returns the request sequence, data reached, blast radius, replay, and a suggested resolution. APISec says it can find APIs across infrastructure, source, gateways, ingress and authentication paths, web apps, development tools, and CI/CD, as well as agents, MCP servers, and LLM call sites. Public APIs run against its cloud; private and on-premises APIs can use a Kubernetes or Docker container, while cloud deployments can run in a customer’s GCP, Azure, or AWS environment. The free plan covers public API testing and basic simulations. Standard costs $690 a month per 100 endpoints; Pro costs $2,750 a month per 100 endpoints.

WuppieFuzz is a free, open-source, self-hosted REST API fuzzer built on LibAFL. It generates and mutates requests from an OpenAPI specification to seek potential errors and security flaws. Black-box, grey-box, and white-box testing are supported, along with authentication and input-validation testing. Authentication formats include Bearer, custom, cookie, OAuth, and Web Fuzzing Commons. Code coverage is supported for Java, JavaScript, and Python, while code coverage reports currently support JaCoCo. The tool can produce endpoint coverage reports, and a Grafana dashboard can visualize request information from a fuzzing campaign. It runs on Windows, macOS, and Linux and uses the Apache 2.0 license. TNO says fuzzing data is not shared with TNO or third parties. The tool is described for software development, supply-chain quality control, or penetration testing. WuppieFuzz requires an OpenAPI document in JSON or YAML to generate requests, and API discovery is not supported. Its plan costs nothing.