MCP Server implementation for Poem
[dependencies]
poem-mcpserver.workspace = "*"
serde = { version = "1.0", features = ["derive"] }
schemars = "0.8.22"
use poem_mcpserver::{stdio::stdio, tool::Text, McpServer, Tools};
struct Counter {
count: i32,
}
/// This server provides a counter tool that can increment and decrement values.
///
/// The counter starts at 0 and can be modified using the 'increment' and
/// 'decrement' tools. Use 'get_value' to check the current count.
#[Tools]
impl Counter {
/// Increment the counter by 1
async fn increment(&mut self) -> Text<i32> {
self.count += 1;
Text(self.count)
}
/// Decrement the counter by 1
async fn decrement(&mut self) -> Text<i32> {
self.count -= 1;
Text(self.count)
}
/// Get the current counter value
async fn get_value(&self) -> Text<i32> {
Text(self.count)
}
}
#[tokio::main]
async fn main() -> std::io::Result<()> {
stdio(McpServer::new().tools(Counter { count: 0 })).await
}
This crate uses #![forbid(unsafe_code)] to ensure everything is implemented in 100% Safe Rust.
The minimum supported Rust version for this crate is 1.85.0.
:balloon: Thanks for your help improving the project! We are so happy to have you!
Licensed under either of
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Poem by you, shall be licensed as Apache, without any additional terms or conditions.