openapi-to-mcp vs everything

Side-by-side comparison to help you pick between these two MCP servers.

	openapi-to-mcp by EvilFreelancer	everything by modelcontextprotocol
Stars	★ 16	★ 85,748
30d uses	—	—
Score	42	77
Official	—	✓
Categories	Developer ToolsAI / LLM ToolsOther	Developer ToolsAI / LLM ToolsOther
Language	TypeScript	TypeScript
Last commit	3 mo ago	this month

openapi-to-mcp · Summary

OpenAPI-to-MCP converts any OpenAPI/Swagger API into MCP tools with HTTP execution.

everything · Summary

Official MCP test server exercising all protocol features for client builders.

openapi-to-mcp · Use cases

Enabling AI clients to interact with existing REST APIs through MCP
Creating MCP interfaces for legacy systems with OpenAPI documentation
Bridging AI systems with enterprise REST APIs securely

everything · Use cases

Testing MCP client implementations against all protocol features
Learning MCP protocol capabilities through a reference server
Validating client compatibility with different transport methods

openapi-to-mcp · Install

Installation

With npm (local)

Copy .env.example to .env and set required variables:

``bash cp .env.example .env # Edit .env: MCP_OPENAPI_SPEC, MCP_API_BASE_URL ``

Install and run:

``bash npm ci npm run build npm run start ``

With Docker

docker run --rm -p 3100:3100 \
  -e MCP_OPENAPI_SPEC=http://your-api/openapi.json \
  -e MCP_API_BASE_URL=http://your-api \
  evilfreelancer/openapi-to-mcp:latest

Claude Desktop Configuration

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "openapi-mcp": {
      "command": "npx",
      "args": ["openapi-to-mcp"],
      "env": {
        "MCP_OPENAPI_SPEC": "http://your-api/openapi.json",
        "MCP_API_BASE_URL": "http://your-api"
      }
    }
  }
}

everything · Install

NPX (recommended)

{
  "mcpServers": {
    "everything": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-everything"]
    }
  }
}

On Windows, use cmd /c:

{
  "mcpServers": {
    "everything": {
      "command": "cmd",
      "args": ["/c", "npx", "-y", "@modelcontextprotocol/server-everything"]
    }
  }
}

Docker

{
  "mcpServers": {
    "everything": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "mcp/everything"]
    }
  }
}

Global install

npm install -g @modelcontextprotocol/server-everything@latest
npx @modelcontextprotocol/server-everything

Comparison generated from public README + GitHub signals. Last updated automatically.