Crate tokitai_mcp_server 

Tokitai MCP Server - Build AI-callable tool servers with zero runtime overhead

This crate provides scaffolding for building MCP (Model Context Protocol) servers using Tokitai’s compile-time tool definitions.

Features

• Zero Runtime Overhead - Tool definitions generated at compile time
• Type Safe - Rust’s type system ensures AI parameters match your functions
• MCP Compliant - Full support for MCP protocol
• Easy to Use - Get started with just a few lines of code

Quick Start

1. Define your tools

use tokitai::tool;

#[tool]
struct Calculator;

#[tool]
impl Calculator {
    /// Add two numbers together
    pub fn add(&self, a: i32, b: i32) -> i32 {
        a + b
    }
}

2. Create and run the server

use tokitai_mcp_server::McpServerBuilder;

#[tokio::main]
async fn main() {
    let server = McpServerBuilder::with_tool(Calculator::default())
        .with_port(8080)
        .build();

    server.run().await.unwrap();
}

3. Call from AI client

# Python MCP client example
import requests

# Get available tools
response = requests.get("http://127.0.0.1:8080/tools")
tools = response.json()

# Call a tool
response = requests.post("http://127.0.0.1:8080/call", json={
    "name": "add",
    "arguments": {"a": 10, "b": 20}
})
result = response.json()
print(result["result"])  # 30

Architecture

┌─────────────────┐         ┌─────────────────────┐         ┌─────────────────┐
│   AI Client     │         │  MCP Server         │         │  Business Logic │
│   (Python/JS)   │ ──────> │  (tokitai-mcp)      │ ──────> │  (Rust tools)   │
│                 │ <────── │                     │ <────── │  #[tool]        │
└─────────────────┘         └─────────────────────┘         └─────────────────┘
     │                           │                              │
     │ 1. List tools             │                              │
     │ 2. Call tool (JSON)       │                              │
     │                           │ 3. Type-safe call            │
     │                           │                              │
     │ 4. Result (JSON)          │                              │

Features

Feature	Description
default	Default features

Requirements

• Rust Version: 1.70+
• Edition: 2021

License

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE)
• MIT License (LICENSE-MIT)

at your option.

Re-exports

pub use server::McpServer;

pub use server::McpServerBuilder;

pub use server::McpServerConfig;

pub use server::MultiToolProvider;

pub use server::ServerError;

pub use server::ToolCallerDyn;

Modules

server

MCP Server implementation

Constants

VERSION

Library version