go-sdk/internal/readme/client/client.go
Robert Findley 204b59483b
mcp,design: revert 'content' back to an interface type (#29)
After 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.
2025-06-25 13:09:05 -04:00

47 lines
1,001 B
Go

// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
// !+
package main
import (
"context"
"log"
"os/exec"
"github.com/modelcontextprotocol/go-sdk/mcp"
)
func main() {
ctx := context.Background()
// Create a new client, with no features.
client := mcp.NewClient("mcp-client", "v1.0.0", nil)
// Connect to a server over stdin/stdout
transport := mcp.NewCommandTransport(exec.Command("myserver"))
session, err := client.Connect(ctx, transport)
if err != nil {
log.Fatal(err)
}
defer session.Close()
// Call a tool on the server.
params := &mcp.CallToolParams{
Name: "greet",
Arguments: map[string]any{"name": "you"},
}
res, err := session.CallTool(ctx, params)
if err != nil {
log.Fatalf("CallTool failed: %v", err)
}
if res.IsError {
log.Fatal("tool failed")
}
for _, c := range res.Content {
log.Print(c.(*mcp.TextContent).Text)
}
}
//!-