Lightning-fast MCP prototyping

Create prototype MCP Servers instantly

Get a live MCP server in seconds, define your tools and mock responses. See how LLMs interact with it before building the real thing. Iterate on your tools and validate your ideas.

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{
  "mcpServers": {
    "your-server": {
      "type": "streamable-http",
      "url": "https://your-server.dummymcp.com/api/mcp",
      "headers": {
        "Authorization": "Bearer some_bearer"
      }
    }
  }
}

How DummyMCP Works

Get from idea to testing in minutes.

Create MCP Server

Create an MCP server get your unique endpoint URL instantly.

Define Tools, Resources and Prompts

Define your tools, resources and prompts and mock responses.

Test with LLMs

Connect to your favourite MCP client(s) and see how LLMs interact with your tools.

Iterate & Analyze

Tweak your tools and responses, monitor how LLMs are using your tools with our comprehensive logging.

Use cases

Whether you're exploring ideas or building production systems, DummyMCP accelerates your workflow

Proof of Concept

Validate your MCP server ideas before investing time and resources in full development. Test concepts quickly and iterate on designs.

Feasibility Testing

Verify that LLMs and MCP clients will actually work well with your proposed tools and workflows before building them.

Stakeholder Demos

Show teams and stakeholders exactly how your MCP server will work in practice, making it easier to get buy-in for development.

MCP Client Development

Create diverse MCP servers with different configurations to thoroughly test your MCP client implementations.

Rapid Prototyping

Quickly iterate on MCP server designs, test different tool schemas, and experiment with various response patterns.

Learning & Training

Understand how MCP works by creating and testing servers without complex setup. Perfect for education and onboarding teams.

Simple Definitions

Define your Tools, Resources and Prompts in a simple UI.

JSON Schema validation

Mock responses

Built-in error handling

Liquid templating for dynamic mock responses

{
  "name": "get_weather",
  "description": "Get current temperature for a given location.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "location": {
        "type": "string",
        "description": "City and country e.g. Bogotá, Colombia"
      }
    },
    "required": [
      "location"
    ],
    "additionalProperties": false
  }
}