Examples
HTTP
Chi

Chi

This page details the example found in /examples/http/chi, demonstrating how to integrate the HTTP+SSE transport with the Chi router.

Chi Server (examples/http/chi)

This example shows how to mount the sse.Server and server.Server HTTP handlers onto a Chi router.

Key parts:

package main

import (
	"log"
	"net/http"

	"github.com/go-chi/chi/v5"
	"github.com/go-chi/chi/v5/middleware"
	// ... other imports: server, protocol, types, sse ...
)

func main() {
	// 1. Setup MCP Server (as usual)
	serverInfo := types.Implementation{Name: "chi-http-server", Version: "0.1.0"}
	opts := server.NewServerOptions(serverInfo)
	srv := server.NewServer(opts)
	// Register tools, etc.

	// 2. Create SSE Transport Server
	sseServer := sse.NewServer(srv, opts.Logger)

	// 3. Setup Chi Router
	r := chi.NewRouter()
	r.Use(middleware.Logger) // Example middleware

	// Mount handlers directly as they satisfy http.Handler
	r.Get("/events", sseServer.HTTPHandler)
	r.Post("/message", srv.HTTPHandler)

	// Add a root handler for testing
	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("Chi MCP Server running. Use /events and /message."))
	})

	// 4. Start Chi Server
	log.Println("Starting Chi HTTP+SSE MCP server on :8080...")
	if err := http.ListenAndServe(":8080", r); err != nil {
		log.Fatalf("Chi server error: %v", err)
	}
}

To Run: Navigate to examples/http/chi and run go run main.go. Clients connect as described in the net/http example (SSE to /events, POST to /message).

Since the gomcp handlers (sseServer.HTTPHandler and srv.HTTPHandler) implement the standard http.Handler interface, they can be mounted directly onto the Chi router using methods like r.Get and r.Post.

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