Remote MCP Server

A server implementation for Model Context Protocol (MCP) that enables remote access to MCP capabilities, developed by Fetcch.

Overview

Remote MCP Server extends the traditional local-only MCP implementation by providing a HTTP API interface, allowing any MCP to be accessed remotely. This enables distributed architectures where MCP-powered tools, resources, and prompts can be accessed over a network.

Features

• Remote access to MCP tools, resources, and prompts
• RESTful API interface
• Easy configuration and setup
• Compatible with existing MCP clients

Installation

# Using uv (recommended)
uv pip install remote-mcp-server

# Or using pip
pip install remote-mcp-server

Creating an MCP Server

Creating a remote MCP server is straightforward. Here's a basic example:

from remote_mcp_server.server.config import Config
from remote_mcp_server.server.main import MCPServer
from mcp.types import ServerCapabilities

# Initialize server configuration
config = Config(
    warn_on_duplicates=True, 
    capabilities=ServerCapabilities(), 
    name="MyRemoteMCP", 
    version="1.0.0"
)

# Create server instance
server = MCPServer(config=config)

# Start the server
app = server.start_server()

# Run with uvicorn
# uvicorn my_server:app --host 0.0.0.0 --port 8000

Adding Tools

Tools are functions that can be called remotely through the MCP protocol:

async def add_numbers(a: int, b: int) -> str:
    """Adds two integers and returns the result as a string."""
    return str(a + b)

server.add_tool(
    name="add",
    description="Add two numbers together",
    input_schema={
        "title": "InputSchema",
        "type": "object",
        "properties": {
            "a": {"title": "a", "type": "integer"},
            "b": {"title": "b", "type": "integer"}
        },
        "required": ["a", "b"]
    },
    fn=add_numbers
)

Adding Resources

Resources are data that can be accessed remotely:

async def read_text_resource(uri: str) -> list[ReadResourceResult]:
    """Read a text resource by URI."""
    return [
        ReadResourceResult(contents=[
            TextResourceContents(
                uri=uri, 
                mimeType="text/plain", 
                text="Resource content here"
            )
        ])
    ]

def list_text_resources() -> list[Resource]:
    """List available text resources."""
    return [
        Resource(
            uri="text:///example",
            name="ExampleText",
            description="An example text resource",
            mimeType="text/plain"
        )
    ]

resource = ResourceModel(
    uri="text:///example",
    name="ExampleText",
    description="An example text resource",
    mime_type="text/plain",
    size=123,
    list_fn=list_text_resources,
    read_fn=read_text_resource
)

server.add_resource(resource)

Adding Prompts

Prompts are template messages that can be customized with arguments:

def generate_greeting(args: Dict[str, str]) -> list[PromptMessage]:
    """Generate a greeting based on provided name."""
    name = args.get("name", "Guest")
    return [
        PromptMessage(
            role="assistant", 
            content=TextContent(
                type="text", 
                text=f"Hello, {name}! How can I help you today?"
            )
        )
    ]

greeting_prompt = PromptModel(
    name="greeting",
    description="Generates a personalized greeting",
    arguments=[
        ArgumentModel(
            name="name",
            description="The name to greet",
            required=False
        )
    ],
    prompt_fn=generate_greeting
)

server.add_prompt(greeting_prompt)

Running the Server

To run a remote MCP server:

# Save as server.py
from remote_mcp_server.server.config import Config
from remote_mcp_server.server.main import MCPServer
from mcp.types import ServerCapabilities
import uvicorn

# Initialize server with configuration
config = Config(
    warn_on_duplicates=True, 
    capabilities=ServerCapabilities(), 
    name="MyRemoteMCP", 
    version="1.0.0"
)
server = MCPServer(config=config)

# Add your tools, resources, and prompts here...

# Start the server
app = server.start_server()

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)

Then run:

python server.py

Configuring MCP Client

To connect to a remote MCP server from an MCP client, add the following to your config.json:

{
  "mcpServers": {
    "client-mcp": {
      "command": "/path/to/uv",
      "args": [
        "--directory", 
        "/path/to/mcp-servers",
        "run",
        "/path/to/mcp-servers/mcp-local-server/cli.py",
        "http://localhost:8000"  // URL of your remote MCP server
      ]
    }
  }
}

Example

A complete example server with an add tool and welcome prompt:

# examples/add_with_prompt.py
from remote_mcp_server.server.config import Config, ResourceModel, PromptModel, ArgumentModel
from mcp.types import ServerCapabilities, ReadResourceResult, TextResourceContents, Resource, PromptMessage, TextContent
from typing import Dict
import asyncio
from remote_mcp_server.server.main import MCPServer
import uvicorn

# Initialize server configuration
config = Config(
    warn_on_duplicates=True, 
    capabilities=ServerCapabilities(), 
    name="ExampleMCP", 
    version="1.0.0"
)
server = MCPServer(config=config)

# Add tool implementation
async def add(a: int, b: int) -> str:
    return str(a + b)

server.add_tool(
    "add",
    "add 2 numbers", 
    {
        "title": "InputSchema",
        "type": "object",
        "properties": {
            "a": {"title": "a", "type": "integer"},
            "b": {"title": "b", "type": "integer"}
        },
        "required": ["a", "b"]
    }, 
    add
)

# Add welcome prompt
def generate_welcome_prompt(args: Dict[str, str]) -> list[PromptMessage]:
    name = args.get("username", "Guest")
    return [PromptMessage(
        role="assistant", 
        content=TextContent(type="text", text=f"Welcome aboard, {name}!")
    )]

welcome_prompt = PromptModel(
    name="welcome_message",
    description="Generates a welcome message for users",
    arguments=[
        ArgumentModel(
            name="username",
            description="The username to welcome",
            required=False
        )
    ],
    prompt_fn=generate_welcome_prompt
)
server.add_prompt(welcome_prompt)

# Start the server
app = server.start_server()

if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)