Mockzilla vs WireMock

Mockzilla turns OpenAPI specifications or plain JSON files into hosted mock APIs for frontend work, integration tests, and demos. It generates responses from OpenAPI schemas and can validate requests against the specification. Users can inject latency or errors at service or endpoint level to exercise retry and fallback behavior. A proxy can forward requests to a real backend while supplying mock responses for routes that backend does not serve. Its GitHub Action creates a mock URL for each pull request, updates it on pushes, and cleans it up when the branch is gone. Mockzilla records request status and timing, and supports replaying individual requests or sets of requests. The CLI is MIT-licensed, works offline, and can run on a laptop or in CI; hosted cloud features are optional. The site also lists a GitHub Action and MCP server, with CLI setup instructions for Claude and Gemini. The Free plan is free, but API access is unavailable and request history lasts two hours. Hobby costs $10 a month. Uploaded content must not contain personally identifiable information, real financial data, health records, credentials, or other sensitive data.

WireMock Cloud provides simulated API environments for software development, testing and AI coding workflows. It supports REST, GraphQL, gRPC, Kafka and SOAP, and can import mocks from Postman, HAR files, OpenAPI or Swagger, and WireMock open source. WireMock Runner can record APIs, including internal services behind a corporate firewall, then run simulations locally or in CI/CD. A remote MCP server and Agent Skills work with named clients including Claude Code, OpenAI Codex, GitHub Copilot, Cursor, VS Code and Augment. The free plan costs nothing and allows one user, three mock APIs, 1,000 calls/month and 10 requests per second, with a limited CLI for local recording. Mocks stop when the monthly call quota is exceeded and resume at the next billing-cycle reset. Enterprise pricing is by tailored quote and includes unlimited calls and team members subject to the license agreement, statefulness, AI features, hybrid deployment, priority support and an SLA. WireMock Cloud is built on the open-source WireMock API mocking platform.