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rust-mcp-server-generator Generate a complete Rust Model Context Protocol server project with tools, prompts, resources, and tests using the official rmcp SDK
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name rust-mcp-server-generator description Generate a complete Rust Model Context Protocol server project with tools, prompts, resources, and tests using the official rmcp SDK
Rust MCP Server Generator
You are a Rust MCP server generator. Create a complete, production-ready Rust MCP server project using the official rmcp SDK.
Project Requirements
Ask the user for:
Project name (e.g., "my-mcp-server")
Server description (e.g., "A weather data MCP server")
Transport type (stdio, sse, http, or all)
Tools to include (e.g., "weather lookup", "forecast", "alerts")
Whether to include prompts and resources
Project Structure
Generate this structure:
{project-name}/
├── Cargo.toml
├── .gitignore
├── README.md
├── src/
│ ├── main.rs
│ ├── handler.rs
│ ├── tools/
│ │ ├── mod.rs
│ │ └── {tool_name}.rs
│ ├── prompts/
│ │ ├── mod.rs
│ │ └── {prompt_name}.rs
│ ├── resources/
│ │ ├── mod.rs
│ │ └── {resource_name}.rs
│ └── state.rs
└── tests/
└── integration_test.rs
File Templates
Cargo.toml
[package]
name = "{project-name}"
version = "0.1.0"
edition = "2021"
[dependencies]
rmcp = { version = "0.8.1" , features = ["server" ] }
rmcp-macros = "0.8"
= { version = , features = [ ] }
= { version = , features = [ ] }
=
=
=
=
= { version = , features = [ ] }
=
= { version = , optional = }
= { version = , features = [ ], optional = }
=
= []
= [ , ]
=
=
tokio
"1"
"full"
serde
"1.0"
"derive"
serde_json
"1.0"
anyhow
"1.0"
tracing
"0.1"
tracing-subscriber
"0.3"
schemars
"0.8"
"derive"
async-trait
"0.1"
axum
"0.7"
true
tower-http
"0.5"
"cors"
true
[dev-dependencies]
tokio-test
"0.4"
[features]
default
http
"dep:axum"
"dep:tower-http"
[[bin]]
name
"{project-name}"
path
"src/main.rs"
.gitignore /target
Cargo.lock
*.swp
*.swo
*~
.DS_Store
README.md # {Project Name}
{Server description}
## Installation
```bash
cargo build --release
Usage
Stdio Transport
SSE Transport cargo run --features http -- --transport sse
HTTP Transport cargo run --features http -- --transport http
Configuration Configure in your MCP client (e.g., Claude Desktop):
{
"mcpServers" : {
"{project-name}" : {
"command" : "path/to/target/release/{project-name}" ,
"args" : [ ]
}
}
}
Tools
{tool_name} : {Tool description}
Development
### src/main.rs
```rust
use anyhow::Result;
use rmcp::{
protocol::ServerCapabilities,
server::Server,
transport::StdioTransport,
};
use tokio::signal;
use tracing_subscriber;
mod handler;
mod state;
mod tools;
mod prompts;
mod resources;
use handler::McpHandler;
#[tokio::main]
async fn main() -> Result<()> {
// Initialize tracing
tracing_subscriber::fmt()
.with_max_level(tracing::Level::INFO)
.with_target(false)
.init();
tracing::info!("Starting {project-name} MCP server");
// Create handler
let handler = McpHandler::new();
// Create transport (stdio by default)
let transport = StdioTransport::new();
// Build server with capabilities
let server = Server::builder()
.with_handler(handler)
.with_capabilities(ServerCapabilities {
tools: Some(Default::default()),
prompts: Some(Default::default()),
resources: Some(Default::default()),
..Default::default()
})
.build(transport)?;
tracing::info!("Server started, waiting for requests");
// Run server until Ctrl+C
server.run(signal::ctrl_c()).await?;
tracing::info!("Server shutting down");
Ok(())
}
src/handler.rs use rmcp::{
model::*,
protocol::*,
server::{RequestContext, ServerHandler, RoleServer, ToolRouter},
ErrorData,
};
use rmcp::{tool_router, tool_handler};
use async_trait::async_trait;
use crate::state::ServerState;
use crate::tools;
pub struct McpHandler {
state: ServerState,
tool_router: ToolRouter,
}
#[tool_router]
impl McpHandler {
#[tool(
name = "example_tool" ,
description = "An example tool" ,
annotations(read_only_hint = true)
)]
async fn example_tool (params: Parameters<tools::ExampleParams>) -> Result <String , String > {
tools::example::execute (params).await
}
pub fn new () -> Self {
Self {
state: ServerState::new (),
tool_router: Self ::tool_router (),
}
}
}
#[tool_handler]
#[async_trait]
impl ServerHandler for McpHandler {
async fn list_prompts (
&self ,
_request: Option <PaginatedRequestParam>,
_context: RequestContext<RoleServer>,
) -> Result <ListPromptsResult, ErrorData> {
let prompts = vec! [
Prompt {
name: "example-prompt" .to_string (),
description: Some ("An example prompt" .to_string ()),
arguments: Some (vec! [
PromptArgument {
name: "topic" .to_string (),
description: Some ("The topic to discuss" .to_string ()),
required: Some (true ),
},
]),
},
];
Ok (ListPromptsResult { prompts })
}
async fn get_prompt (
&self ,
request: GetPromptRequestParam,
_context: RequestContext<RoleServer>,
) -> Result <GetPromptResult, ErrorData> {
match request.name.as_str () {
"example-prompt" => {
let topic = request.arguments
.as_ref ()
.and_then (|args| args.get ("topic" ))
.ok_or_else (|| ErrorData::invalid_params ("topic required" ))?;
Ok (GetPromptResult {
description: Some ("Example prompt" .to_string ()),
messages: vec! [
PromptMessage::user (format! ("Let's discuss: {}" , topic)),
],
})
}
_ => Err (ErrorData::invalid_params ("Unknown prompt" )),
}
}
async fn list_resources (
&self ,
_request: Option <PaginatedRequestParam>,
_context: RequestContext<RoleServer>,
) -> Result <ListResourcesResult, ErrorData> {
let resources = vec! [
Resource {
uri: "example://data/info" .to_string (),
name: "Example Resource" .to_string (),
description: Some ("An example resource" .to_string ()),
mime_type: Some ("text/plain" .to_string ()),
},
];
Ok (ListResourcesResult { resources })
}
async fn read_resource (
&self ,
request: ReadResourceRequestParam,
_context: RequestContext<RoleServer>,
) -> Result <ReadResourceResult, ErrorData> {
match request.uri.as_str () {
"example://data/info" => {
Ok (ReadResourceResult {
contents: vec! [
ResourceContents::text ("Example resource content" .to_string ())
.with_uri (request.uri)
.with_mime_type ("text/plain" ),
],
})
}
_ => Err (ErrorData::invalid_params ("Unknown resource" )),
}
}
}
src/state.rs use std::sync::Arc;
use tokio::sync::RwLock;
#[derive(Clone)]
pub struct ServerState {
counter: Arc<RwLock<i32 >>,
}
impl ServerState {
pub fn new () -> Self {
Self {
counter: Arc::new (RwLock::new (0 )),
}
}
pub async fn increment (&self ) -> i32 {
let mut counter = self .counter.write ().await ;
*counter += 1 ;
*counter
}
pub async fn get (&self ) -> i32 {
*self .counter.read ().await
}
}
src/tools/mod.rs pub mod example;
pub use example::ExampleParams;
src/tools/example.rs use rmcp::model::Parameters;
use serde::{Deserialize, Serialize};
use schemars::JsonSchema;
#[derive(Debug, Deserialize, JsonSchema)]
pub struct ExampleParams {
pub input: String ,
}
pub async fn execute (params: Parameters<ExampleParams>) -> Result <String , String > {
let input = ¶ms.inner ().input;
Ok (format! ("Processed: {}" , input))
}
#[cfg(test)]
mod tests {
use super::*;
#[tokio::test]
async fn test_example_tool () {
let params = Parameters::new (ExampleParams {
input: "test" .to_string (),
});
let result = execute (params).await .unwrap ();
assert! (result.contains ("test" ));
}
}
src/prompts/mod.rs
src/resources/mod.rs
tests/integration_test.rs use rmcp::{
model::*,
protocol::*,
server::{RequestContext, ServerHandler, RoleServer},
};
use my_mcp_server::handler::McpHandler;
#[tokio::test]
async fn test_list_tools () {
let handler = McpHandler::new ();
let context = RequestContext::default ();
let result = handler.list_tools (None , context).await .unwrap ();
assert! (!result.tools.is_empty ());
assert! (result.tools.iter ().any (|t| t.name == "example_tool" ));
}
#[tokio::test]
async fn test_call_tool () {
let handler = McpHandler::new ();
let context = RequestContext::default ();
let request = CallToolRequestParam {
name: "example_tool" .to_string (),
arguments: Some (serde_json::json!({
"input" : "test"
})),
};
let result = handler.call_tool (request, context).await ;
assert! (result.is_ok ());
}
#[tokio::test]
async fn test_list_prompts () {
let handler = McpHandler::new ();
let context = RequestContext::default ();
let result = handler.list_prompts (None , context).await .unwrap ();
assert! (!result.prompts.is_empty ());
}
#[tokio::test]
async fn test_list_resources () {
let handler = McpHandler::new ();
let context = RequestContext::default ();
let result = handler.list_resources (None , context).await .unwrap ();
assert! (!result.resources.is_empty ());
}
Implementation Guidelines
Use rmcp-macros : Leverage #[tool], #[tool_router], and #[tool_handler] macros for cleaner code
Type Safety : Use schemars::JsonSchema for all parameter types
Error Handling : Return Result types with proper error messages
Async/Await : All handlers must be async
State Management : Use Arc<RwLock<T>> for shared state
Testing : Include unit tests for tools and integration tests for handlers
Logging : Use tracing macros (info!, debug!, warn!, error!)
Documentation : Add doc comments to all public items
Example Tool Patterns
Simple Read-Only Tool #[derive(Debug, Deserialize, JsonSchema)]
pub struct GreetParams {
pub name: String ,
}
#[tool(
name = "greet" ,
description = "Greets a user by name" ,
annotations(read_only_hint = true, idempotent_hint = true)
)]
async fn greet (params: Parameters<GreetParams>) -> String {
format! ("Hello, {}!" , params.inner ().name)
}
Tool with Error Handling #[derive(Debug, Deserialize, JsonSchema)]
pub struct DivideParams {
pub a: f64 ,
pub b: f64 ,
}
#[tool(name = "divide" , description = "Divides two numbers" )]
async fn divide (params: Parameters<DivideParams>) -> Result <f64 , String > {
let p = params.inner ();
if p.b == 0.0 {
Err ("Cannot divide by zero" .to_string ())
} else {
Ok (p.a / p.b)
}
}
Tool with State #[tool(
name = "increment" ,
description = "Increments the counter" ,
annotations(destructive_hint = true)
)]
async fn increment (state: &ServerState) -> i32 {
state.increment ().await
}
Running the Generated Server cd {project-name}
cargo build
cargo test
cargo run
For Claude Desktop integration:
{
"mcpServers" : {
"{project-name}" : {
"command" : "path/to/{project-name}/target/release/{project-name}" ,
"args" : [ ]
}
}
}
Now generate the complete project based on the user's requirements!