API-Mocked
API-Mocked: A self-hosted, open-source mock server with dynamic responses and Socket.IO support. Ranked #22 of 26 in API Mocking Tools by our editors (6.8/10); pricing: Open source; best for self-hosted HTTP and WebSocket mocks.
At a glance
- Editor score6.8 / 10
- PricingOpen source
- Best forSelf-hosted HTTP and WebSocket mocks
- Paid fromFree
- Dynamic responsesYes
- Facts checked20 Sep 2026
Where it wins
- Supports HTTP, HTTPS, and WebSocket connections through Socket.IO
- Uses request data from headers, query paths, and JWTs in responses
- Provides delayed, multiple, and timer-based responses
Where it doesn't
- Request matching is limited to paths
- The workflow centers on HCL rather than OpenAPI import
- Deployment is self-hosted rather than managed
Our verdict on API-Mocked
API-Mocked is an open-source standalone server for developers who need local API mocks during development and API testing. Written in Go, it compiles to a single binary and serves configured HTTP and HTTPS endpoints, alongside WebSocket connections through Socket.IO. Its self-hosted model suits teams that want to run mocks in their own environment and define behavior directly in configuration.
The strongest feature is its control over response behavior. HCL configuration supports authentication with JWT and BasicAuth, CORS headers, delayed responses, multiple responses, and timer-based responses. Response values can come from request headers, query paths, and JWTs, allowing mocks to reflect request-specific data rather than returning only fixed payloads. This makes API-Mocked useful for testing authentication flows, asynchronous behavior, and changing response scenarios.
API-Mocked remains focused on a narrow, configuration-driven mocking workflow. Request matching is path-based, so teams needing detailed matching across query parameters, headers, or request bodies may need a different tool. The workflow also centers on HCL instead of OpenAPI import or generated mock data, and deployment is self-hosted rather than managed. Choose API-Mocked when a compact local server, open-source codebase, HTTP and HTTPS coverage, or Socket.IO support matters. Choose an alternative when a broader integration ecosystem, OpenAPI-centered workflow, or hosted service is the priority.
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API-Mocked pricing
API-Mocked fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Free |
| Dynamic responses | Yes |
| OpenAPI import | Not verified |
| Request matching | Path |
| Mock data generation | Not verified |
| Local deployment | Yes |
| Supported protocols | HTTP, HTTPS, WebSockets |
| Deployment | Self-hosted |
| Support | Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Open source |
| Website | github.com |
| Facts checked | 20 Sep 2026 |
Alternatives to API-Mocked
- BeeceptorA broad API mocking platform with protocol coverage, contract testing, and hosted or self-hosted deployment.9.4
- MockServerA free, open-source choice for teams that need broad, self-hosted API control.9.1
- WireMockA flexible mocking platform spanning hosted, local, CI/CD, Kubernetes, and self-managed use.9.0
See all API-Mocked alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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