MockAPI
Lightweight Local API Mock Server One binary Full-featured.
by Fynn Tang
FreemiummacOSWindowsLinux
- Upvotes
- 132
- Comments
- 4
- Impressions
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About
MockAPI is a lightweight local mock server for creating API endpoints quickly. It runs as a single Go binary with zero runtime dependencies and includes a web UI to view logs, manage routes, and create endpoints without configuration files. The tool supports mocking REST, GraphQL, WebSocket, and gRPC-Web HTTP endpoints, including dynamic routing with path parameters, wildcards, and conditional responses. For generating realistic behavior, it provides a JavaScript engine to build responses using request context. MockAPI can import Swagger/OpenAPI 2.0 and 3.x specifications to auto-generate routes, and it offers 12+ quick templates to speed up setup. A proxy mode forwards unmatched requests to a real backend, enabling partial mocking during development and testing.
Awards
1 awardRecognition this tool has earned on NextGen Tools.
Problem & solution
Problem
Developers need fast local API mocks for testing without dependencies.
Solution
Single-binary server provides REST/GraphQL/WebSocket/gRPC mocks with UI and templates.
Who it's for
Developers needing local API mocking for tests and prototyping.
Main features
- REST/GraphQL/gRPC/WebSocket
- Web UI route management
- Swagger/OpenAPI import
- JavaScript response engine
- Proxy unmatched requests
Use cases
- Mock endpoints for frontend dev
- Test APIs with dynamic responses
Comments
4 shownShare your thoughts about this tool.
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- Robert GAug 2, 2026
great
- info8294Jul 30, 2026
good
- 6Clement JoshuaJul 27, 2026
Good
- Ghulam NabiJul 27, 2026
No match for such golden ideas
