getmockd/mockd

Overview

Mockd is a high-performance mock server supporting HTTP, WebSocket, gRPC, MQTT, SSE, GraphQL, and SOAP in a single Go binary. It allows developers to simulate multiple backend services for testing and development without running separate servers.

Best for

Best for
Developers needing a lightweight multi-protocol mock server for testing and prototyping

Use cases

• Mocking REST APIs for frontend development
• Simulating WebSocket and gRPC services for integration tests
• Stubbing MQTT and SSE endpoints for IoT or real-time applications

How to use

Install

curl -sSL https://get.mockd.io | sh

Tools exposed

• mockd

Tested with

Claude Desktop, Cursor, Windsurf

Example client config

{\n  "mcpServers": {\n    "mockd": { "command": "mockd", "args": ["mcp"] }\n  }\n}

Notes

Mockd is a high-performance mock server supporting HTTP, WebSocket, gRPC, MQTT, SSE, GraphQL, and SOAP in a single Go binary. It allows developers to simulate multiple backend services for testing and development without running separate servers.

123 stars on GitHub. Last updated 2026-05-18. Licensed Apache-2.0.

Use cases

• Mocking REST APIs for frontend development
• Simulating WebSocket and gRPC services for integration tests
• Stubbing MQTT and SSE endpoints for IoT or real-time applications

Pros

• Single binary covers many protocols reducing setup complexity
• High-performance suitable for load testing scenarios
• Open source with Go language for easy customization

Cons

• Relatively small community (123 stars) may mean fewer examples or contributions
• Each protocol may lack advanced features compared to dedicated mock tools
• Documentation and tutorials may be limited

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.