getmockd/mockd

Mock HTTP, gRPC, GraphQL, WebSocket, MQTT, SSE, and SOAP from a single CLI tool.
Import OpenAPI specs. Build digital twins. Let AI agents create mocks for you.
Website ·
Docs ·
Samples ·
Contributing
---
Quick Start
More install options
Pre-built binaries for Linux, macOS, and Windows on the Releases page.
Why mockd?
Every other mock tool makes you choose: pick one protocol, install a runtime, bolt on extensions. mockd doesn't.
| | mockd | WireMock | Mockoon | Prism | MockServer | Beeceptor | json-server |
|---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
| **Single binary, no runtime** | ✅ | ❌ JVM | ❌ Electron | ✅ | ❌ JVM | ❌ SaaS | ❌ Node |
| **All 9 protocols built-in** | ✅ | 🔌 Ext | Partial | HTTP only | HTTP only | Partial | REST only |
| **Chaos profiles + circuit breakers** | ✅ | ⚠️ Cloud | ❌ | ❌ | ❌ | ❌ | ❌ |
| **MCP server** | ✅ local | ⚠️ Cloud | ❌ | ❌ | ❌ | ⚠️ Cloud, Team+ | ❌ |
| **Free + self-hostable, unlimited** | ✅ | ✅ | ✅ | ✅ | ✅ | 50 req/day | ✅ |
> 🔌 **Ext** = requires separate extension JAR • ⚠️ **Cloud** = only in paid/hosted tier
Full capability matrix (deployment, protocols, capabilities, imports/exports, pricing)
Deployment
| | mockd | WireMock | Mockoon | Prism | MockServer | Beeceptor | json-server |
|---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
| Native single binary | ✅ Go | ❌ | ❌ | ✅ | ❌ | ❌ | ❌ |
| Runtime required | none | JVM | Electron/Node | optional Node | JVM | n/a (SaaS) | Node |
| Docker image | ✅ | ✅ | ✅ CLI | ✅ | ✅ | ⚠️ Enterprise | ❌ |
| Managed SaaS offering | roadmap | WireMock Cloud | Mockoon Cloud | Stoplight | ❌ | ✅ | ❌ |
Protocol support
| | mockd | WireMock OSS | Mockoon | Prism | MockServer | Beeceptor | json-server |
|---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
| REST / HTTP | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| gRPC | ✅ | 🔌 Ext | ❌ | ❌ | ❌ | ✅ | ❌ |
| GraphQL | ✅ | 🔌 Ext | ❌ | ❌ | ❌ | ✅ | ❌ |
| WebSocket | ✅ | 🔌 Ext (beta) | ✅ | ❌ | ❌ | ❌ | ❌ |
| MQTT | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| SSE | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| SOAP (WSDL) | ✅ | ❌ | Partial | ❌ | Partial | ✅ | ❌ |
| mTLS | ✅ | ✅ | Partial | ❌ | ✅ | ✅ | ❌ |
| OAuth flows | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
Capabilities
| | mockd | WireMock OSS | Mockoon | Prism | MockServer | Beeceptor | json-server |
|---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
| Stateful CRUD | ✅ | ❌ | ✅ | Partial | ❌ | ✅ | ✅ |
| Multi-step stateful flows | ✅ | ✅ Scenarios | Partial | ❌ | Partial | ✅ | ❌ |
| Fault injection (delay, errors) | ✅ | ✅ | ✅ | ❌ | ✅ | ✅ | ❌ |
| Chaos profiles | ✅ | ⚠️ Cloud | ❌ | ❌ | ❌ | ❌ | ❌ |
| Circuit breakers | ✅ | ⚠️ Cloud | ❌ | ❌ | ❌ | ❌ | ❌ |
| Bandwidth throttling | ✅ | ❌ | ❌ | ❌ | ❌ | roadmap | ❌ |
| Admin REST API | ✅ | ✅ | CLI only | ❌ | ✅ | ✅ | Partial |
| Built-in web dashboard | ✅ | ⚠️ Cloud | ⚠️ Cloud | ❌ | ✅ read-only | ✅ | ❌ |
| Native desktop GUI | ❌ | ❌ | ✅ Electron | ❌ | ❌ | ❌ | ❌ |
| MCP server | ✅ local | ⚠️ Cloud | ❌ | ❌ | ❌ | ⚠️ Cloud Team+ | ❌ |
| Cloud tunnel sharing | ✅ | ❌ | ⚠️ Cloud | ❌ | ❌ | ✅ | ❌ |
Import / export
| | mockd | WireMock OSS | Mockoon | Prism | MockServer | Beeceptor | json-server |
|---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
| OpenAPI import | ✅ | ⚠️ Cloud | ✅ | ✅ | ✅ | ✅ | ❌ |
| Postman import | ✅ | ⚠️ Cloud | ❌ | ✅ | ❌ | ❌ | ❌ |
| HAR import | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| WSDL import | ✅ | ❌ | ❌ | ❌ | ❌ | ✅ | ❌ |
| cURL import | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |