6e03217c83Handlers and client/server methods take a single request argument combining the session and params. This slightly simplifies the signature for handlers, since there is no longer an often-ignored session argument. But more importantly, it opens the door to adding more information in requests, such as auth info and HTTP request headers. For #243.
36 lines
1,022 B
Go
36 lines
1,022 B
Go
// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
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// Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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// !+
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package main
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import (
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"context"
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"log"
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"github.com/modelcontextprotocol/go-sdk/mcp"
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)
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type HiParams struct {
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Name string `json:"name" jsonschema:"the name of the person to greet"`
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}
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func SayHi(ctx context.Context, req *mcp.ServerRequest[*mcp.CallToolParamsFor[HiParams]]) (*mcp.CallToolResultFor[any], error) {
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return &mcp.CallToolResultFor[any]{
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Content: []mcp.Content{&mcp.TextContent{Text: "Hi " + req.Params.Arguments.Name}},
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}, nil
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}
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func main() {
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// Create a server with a single tool.
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server := mcp.NewServer(&mcp.Implementation{Name: "greeter", Version: "v1.0.0"}, nil)
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mcp.AddTool(server, &mcp.Tool{Name: "greet", Description: "say hi"}, SayHi)
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// Run the server over stdin/stdout, until the client disconnects
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if err := server.Run(context.Background(), &mcp.StdioTransport{}); err != nil {
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log.Fatal(err)
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}
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}
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// !-
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