04ca8ac03b
Make Tool APIs future-proof by pushing generics into CallToolParams, and using CallToolParams throughout. This has several advantages: - We no longer need the awkward CallToolOptions type, which is almost but not quite like CallToolParams. - NewTool no longer needs to define its own handler type: it accepts a ToolHandler[TArgs]. This also means its signature is future-proof. Additionally, provide a `CallTool` helper (the analog of NewTool) to serve as a more strongly typed variant of `ClientSession.CallTool`. + design, protocol generation Change-Id: I80172a25bc50734dae84a541aa4776ed9161694e Reviewed-on: https://go-review.googlesource.com/c/tools/+/676495 Reviewed-by: Jonathan Amsterdam <jba@google.com> Auto-Submit: Robert Findley <rfindley@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
32 lines
844 B
Go
32 lines
844 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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"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"`
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}
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func SayHi(ctx context.Context, cc *mcp.ServerSession, params *mcp.CallToolParams[HiParams]) (*mcp.CallToolResult, error) {
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return &mcp.CallToolResult{
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Content: []*mcp.Content{mcp.NewTextContent("Hi " + params.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("greeter", "v1.0.0", nil)
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server.AddTools(mcp.NewTool("greet", "say hi", SayHi))
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// Run the server over stdin/stdout, until the client disconnects
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_ = server.Run(context.Background(), mcp.NewStdIOTransport())
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}
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// !-
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