MockForge

Generate realistic mock API servers from OpenAPI specs with stateful behavior

Code & DevelopmentFreemium

MockForge generates fully functional mock API servers from OpenAPI/Swagger specifications, producing realistic response data that respects schema constraints, relationships between endpoints, and stateful behavior where POST requests affect subsequent GET responses. The tool supports configurable latency injection, error rate simulation, and rate limiting to test client resilience. Frontend teams use it to develop against APIs before backend implementation is complete while QA teams use it to test edge cases and failure scenarios that are difficult to reproduce against real services.

Key Features

• ✓OpenAPI spec parsing
• ✓Stateful mock behavior
• ✓Realistic data generation
• ✓Latency injection
• ✓Error simulation