Xây MCP client đầu tiên

import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";

from mcp import ClientSession, StdioServerParameters, types
from mcp.client.stdio import stdio_client

using Microsoft.Extensions.AI;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using ModelContextProtocol.Client;

import java.util.Map;
import org.springframework.web.reactive.function.client.WebClient;
import io.modelcontextprotocol.client.McpClient;
import io.modelcontextprotocol.client.transport.WebFluxSseClientTransport;
import io.modelcontextprotocol.spec.McpClientTransport;
import io.modelcontextprotocol.spec.McpSchema.CallToolRequest;
import io.modelcontextprotocol.spec.McpSchema.CallToolResult;
import io.modelcontextprotocol.spec.McpSchema.ListToolsResult;

[package]
name = "calculator-client"
version = "0.1.0"
edition = "2024"

[dependencies]
rmcp = { version = "0.5.0", features = ["client", "transport-child-process"] }
serde_json = "1.0.141"
tokio = { version = "1.46.1", features = ["rt-multi-thread"] }

use rmcp::{
    RmcpError,
    model::CallToolRequestParam,
    service::ServiceExt,
    transport::{ConfigureCommandExt, TokioChildProcess},
};
use tokio::process::Command;

const transport = new StdioClientTransport({
  command: "node",
  args: ["server.js"]
});

const client = new Client(
  {
    name: "example-client",
    version: "1.0.0"
  }
);

await client.connect(transport);

from mcp import ClientSession, StdioServerParameters, types
from mcp.client.stdio import stdio_client

# Create server parameters for stdio connection
server_params = StdioServerParameters(
    command="mcp",  # Executable
    args=["run", "server.py"],  # Optional command line arguments
    env=None,  # Optional environment variables
)

async def run():
    async with stdio_client(server_params) as (read, write):
        async with ClientSession(
            read, write
        ) as session:
            # Initialize the connection
            await session.initialize()

          

if __name__ == "__main__":
    import asyncio

    asyncio.run(run())

using Microsoft.Extensions.AI;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using ModelContextProtocol.Client;

var builder = Host.CreateApplicationBuilder(args);

builder.Configuration
    .AddEnvironmentVariables()
    .AddUserSecrets<Program>();



var clientTransport = new StdioClientTransport(new()
{
    Name = "Demo Server",
    Command = "dotnet",
    Arguments = ["run", "--project", "path/to/file.csproj"],
});

await using var mcpClient = await McpClient.CreateAsync(clientTransport);

public class SDKClient {
    
    public static void main(String[] args) {
        var transport = new WebFluxSseClientTransport(WebClient.builder().baseUrl("http://localhost:8080"));
        new SDKClient(transport).run();
    }
    
    private final McpClientTransport transport;

    public SDKClient(McpClientTransport transport) {
        this.transport = transport;
    }

    public void run() {
        var client = McpClient.sync(this.transport).build();
        client.initialize();
        
        // Your client logic goes here
    }
}

async fn main() -> Result<(), RmcpError> {
    // Assume the server is a sibling project named "calculator-server" in the same directory
    let server_dir = std::path::Path::new(env!("CARGO_MANIFEST_DIR"))
        .parent()
        .expect("failed to locate workspace root")
        .join("calculator-server");

    let client = ()
        .serve(
            TokioChildProcess::new(Command::new("cargo").configure(|cmd| {
                cmd.arg("run").current_dir(server_dir);
            }))
            .map_err(RmcpError::transport_creation::<TokioChildProcess>)?,
        )
        .await?;

    // TODO: Initialize

    // TODO: List tools

    // TODO: Call add tool with arguments = {"a": 3, "b": 2}

    client.cancel().await?;
    Ok(())
}

// List prompts
const prompts = await client.listPrompts();

// List resources
const resources = await client.listResources();

// list tools
const tools = await client.listTools();

# List available resources
resources = await session.list_resources()
print("LISTING RESOURCES")
for resource in resources:
    print("Resource: ", resource)

# List available tools
tools = await session.list_tools()
print("LISTING TOOLS")
for tool in tools.tools:
    print("Tool: ", tool.name)

foreach (var tool in await client.ListToolsAsync())
{
    Console.WriteLine($"{tool.Name} ({tool.Description})");
}

// List and demonstrate tools
ListToolsResult toolsList = client.listTools();
System.out.println("Available Tools = " + toolsList);

// You can also ping the server to verify connection
client.ping();

// Initialize
let server_info = client.peer_info();
println!("Server info: {:?}", server_info);

// List tools
let tools = client.list_tools(Default::default()).await?;
println!("Available tools: {:?}", tools);

// Read a resource
const resource = await client.readResource({
  uri: "file:///example.txt"
});

// Call a tool
const result = await client.callTool({
  name: "example-tool",
  arguments: {
    arg1: "value"
  }
});

// call prompt
const promptResult = await client.getPrompt({
    name: "review-code",
    arguments: {
        code: "console.log(\"Hello world\")"
    }
})

# Read a resource
print("READING RESOURCE")
content, mime_type = await session.read_resource("greeting://hello")

# Call a tool
print("CALL TOOL")
result = await session.call_tool("add", arguments={"a": 1, "b": 7})
print(result.content)

// Call various calculator tools
CallToolResult resultAdd = client.callTool(new CallToolRequest("add", Map.of("a", 5.0, "b", 3.0)));
System.out.println("Add Result = " + resultAdd);

CallToolResult resultSubtract = client.callTool(new CallToolRequest("subtract", Map.of("a", 10.0, "b", 4.0)));
System.out.println("Subtract Result = " + resultSubtract);

CallToolResult resultMultiply = client.callTool(new CallToolRequest("multiply", Map.of("a", 6.0, "b", 7.0)));
System.out.println("Multiply Result = " + resultMultiply);

CallToolResult resultDivide = client.callTool(new CallToolRequest("divide", Map.of("a", 20.0, "b", 4.0)));
System.out.println("Divide Result = " + resultDivide);

CallToolResult resultHelp = client.callTool(new CallToolRequest("help", Map.of()));
System.out.println("Help = " + resultHelp);

// Call add tool with arguments = {"a": 3, "b": 2}
let a = 3;
let b = 2;
let tool_result = client
    .call_tool(CallToolRequestParam {
        name: "add".into(),
        arguments: serde_json::json!({ "a": a, "b": b }).as_object().cloned(),
    })
    .await?;
println!("Result of {:?} + {:?}: {:?}", a, b, tool_result);

"client": "tsc && node build/client.js"

npm run client

python client.py

dotnet run

# Build you project
./mvnw clean compile

# Run the client
./mvnw exec:java -Dexec.mainClass="com.microsoft.mcp.sample.client.SDKClient"

# Navigate to the solution directory
cd 03-GettingStarted/02-client/solution/java

# Build and run the JAR
./mvnw clean package
java -jar target/calculator-client-0.0.1-SNAPSHOT.jar

cargo fmt
cargo run

import { McpServer, ResourceTemplate } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";

// Create an MCP server
const server = new McpServer({
  name: "Demo",
  version: "1.0.0"
});

// Add an addition tool
server.tool("add",
  { a: z.number(), b: z.number() },
  async ({ a, b }) => ({
    content: [{ type: "text", text: String(a + b) }]
  })
);

// Add a dynamic greeting resource
server.resource(
  "greeting",
  new ResourceTemplate("greeting://{name}", { list: undefined }),
  async (uri, { name }) => ({
    contents: [{
      uri: uri.href,
      text: `Hello, ${name}!`
    }]
  })
);

// Start receiving messages on stdin and sending messages on stdout

async function main() {
  const transport = new StdioServerTransport();
  await server.connect(transport);
  console.error("MCPServer started on stdin/stdout");
}

main().catch((error) => {
  console.error("Fatal error: ", error);
  process.exit(1);
});

# server.py
from mcp.server.fastmcp import FastMCP

# Create an MCP server
mcp = FastMCP("Demo")


# Add an addition tool
@mcp.tool()
def add(a: int, b: int) -> int:
    """Add two numbers"""
    return a + b


# Add a dynamic greeting resource
@mcp.resource("greeting://{name}")
def get_greeting(name: str) -> str:
    """Get a personalized greeting"""
    return f"Hello, {name}!"

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using ModelContextProtocol.Server;
using System.ComponentModel;

var builder = Host.CreateApplicationBuilder(args);
builder.Logging.AddConsole(consoleLogOptions =>
{
    // Configure all logs to go to stderr
    consoleLogOptions.LogToStandardErrorThreshold = LogLevel.Trace;
});

builder.Services
    .AddMcpServer()
    .WithStdioServerTransport()
    .WithToolsFromAssembly();
await builder.Build().RunAsync();

[McpServerToolType]
public static class CalculatorTool
{
    [McpServerTool, Description("Adds two numbers")]
    public static string Add(int a, int b) => $"Sum {a + b}";
}