Fluxzy uses a declarative rule system. A filter matches specific traffic (by host, method, header, status code, or dozens of other criteria). An action performs an operation on that traffic: modify headers, mock responses, add delays, set breakpoints, etc.
Combine a filter with one or more actions to create a rule. Rules are defined in YAML and work identically across Fluxzy Desktop, the CLI, and .NET integration. All directives are available in every Fluxzy tool, including the free Community Edition.