204b59483bAfter some experience with the flattened version of Content, we see that it can easily lead to incorrect usage and is a harder API to read. Therefore, this CL changes back to a design similar to what we had prior to https://go.dev/cl/672415, though opting to promote content unmarshalling to the protocol types that use it, which leads to an overall simpler api.
74 lines
1.9 KiB
Go
74 lines
1.9 KiB
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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package mcp_test
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import (
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"context"
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"fmt"
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"log"
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"github.com/modelcontextprotocol/go-sdk/mcp"
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)
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type SayHiParams 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.CallToolParamsFor[SayHiParams]) (*mcp.CallToolResultFor[any], error) {
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return &mcp.CallToolResultFor[any]{
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Content: []mcp.Content{
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&mcp.TextContent{Text: "Hi " + params.Arguments.Name},
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},
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}, nil
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}
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func ExampleServer() {
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ctx := context.Background()
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clientTransport, serverTransport := mcp.NewInMemoryTransports()
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server := mcp.NewServer("greeter", "v0.0.1", nil)
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server.AddTools(mcp.NewServerTool("greet", "say hi", SayHi))
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serverSession, err := server.Connect(ctx, serverTransport)
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if err != nil {
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log.Fatal(err)
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}
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client := mcp.NewClient("client", "v0.0.1", nil)
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clientSession, err := client.Connect(ctx, clientTransport)
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if err != nil {
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log.Fatal(err)
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}
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res, err := clientSession.CallTool(ctx, &mcp.CallToolParams{
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Name: "greet",
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Arguments: map[string]any{"name": "user"},
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})
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if err != nil {
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log.Fatal(err)
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}
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fmt.Println(res.Content[0].(*mcp.TextContent).Text)
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clientSession.Close()
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serverSession.Wait()
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// Output: Hi user
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}
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// createSessions creates and connects an in-memory client and server session for testing purposes.
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func createSessions(ctx context.Context) (*mcp.ClientSession, *mcp.ServerSession, *mcp.Server) {
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server := mcp.NewServer("server", "v0.0.1", nil)
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client := mcp.NewClient("client", "v0.0.1", nil)
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serverTransport, clientTransport := mcp.NewInMemoryTransports()
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serverSession, err := server.Connect(ctx, serverTransport)
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if err != nil {
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log.Fatal(err)
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}
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clientSession, err := client.Connect(ctx, clientTransport)
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if err != nil {
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log.Fatal(err)
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}
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return clientSession, serverSession, server
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}
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