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feat(macros): auto-generate get_info and default router (#785)

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* feat(macros): auto-generate get_info and default router

* docs: simplify examples and docs with new defaults

* feat(macros): add tool_router(server_handler) to elide separate #[tool_handler] impl

* docs: add Tools section to README and simplify calculator examples with server_handler
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Dale Seo 2026-04-08 15:06:26 -04:00 • committed by GitHub
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12
crates/rmcp/src/handler/server/router/tool.rs
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@ -10,9 +10,8 @@
//! # schemars
//! # };
//! # use serde::{Serialize, Deserialize};
//! struct Server {
//! tool_router: ToolRouter<Self>,
//! }
//! struct Server;
//!
//! #[derive(Deserialize, schemars::JsonSchema, Default)]
//! struct AddParameter {
//! left: usize,
@ -22,7 +21,7 @@
//! struct AddOutput {
//! sum: usize
//! }
//! #[tool_router]
//! #[tool_router(server_handler)]
//! impl Server {
//! #[tool(name = "adder", description = "Modular add two integers")]
//! fn add(
@ -34,6 +33,11 @@
//! }
//! ```
//!
//! The `server_handler` flag emits `#[tool_handler]` for you (tools-only servers). For custom
//! `#[tool_handler(...)]` options or multiple handler macros on one `impl ServerHandler`, write
//! `#[tool_router]` and `#[tool_handler] impl ServerHandler for ...` explicitly—see
//! [`tool_router`][crate::tool_router] and [`tool_handler`][crate::tool_handler].
//!
//! Using the macro-based code pattern above is suitable for small MCP servers with simple interfaces.
//! When the business logic become larger, it is recommended that each tool should reside
//! in individual file, combined into MCP server using [`SyncTool`] and [`AsyncTool`] traits.