docs: migration of tbgenkit package samples from go sdk

docs/en/sdks/go-sdk/tbgenkit/_index.md

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+---
+title: "tbGenkit Package"
+linkTitle: "tbGenkit"
+type: docs
+weight: 1
+---
+
+![MCP Toolbox Logo](https://raw.githubusercontent.com/googleapis/genai-toolbox/main/logo.png)
+
+# MCP Toolbox TBGenkit Package
+
+[![License: Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+
+This package allows you to seamlessly integrate the functionalities of
+[Toolbox](https://github.com/googleapis/genai-toolbox) allowing you to load and
+use tools defined in the service as standard Genkit Tools within your Genkit Go
+applications.
+
+This simplifies integrating external functionalities (like APIs, databases, or
+custom logic) managed by the Toolbox into your workflows, especially those
+involving Large Language Models (LLMs).
+
+
+<!-- TOC ignore:true -->
+<!-- TOC -->
+
+- [Installation](#installation)
+- [Quickstart](#quickstart)
+- [Convert Toolbox Tool to a Genkit Tool](#convert-toolbox-tool-to-a-genkit-tool)
+- [Contributing](#contributing)
+- [License](#license)
+- [Support](#support)
+- [Samples for Reference](#samples-for-reference)
+<!-- /TOC -->
+
+## Installation
+
+```bash
+go get github.com/googleapis/mcp-toolbox-sdk-go
+```
+This SDK is supported on Go version 1.24.4 and higher.
+
+## Quickstart
+
+For more information on how to load a ToolboxTool, see [the core package](https://github.com/googleapis/mcp-toolbox-sdk-go/tree/main/core)
+
+## Convert Toolbox Tool to a Genkit Tool
+
+```go
+"github.com/googleapis/mcp-toolbox-sdk-go/tbgenkit"
+
+func main() {
+  // Assuming the toolbox tool is loaded
+  // Make sure to add error checks for debugging
+  ctx := context.Background()
+  g, err := genkit.Init(ctx)
+
+  genkitTool, err := tbgenkit.ToGenkitTool(toolboxTool, g)
+
+}
+```
+
+For end-to-end example on how to use Toolbox with Genkit Go, check out the [/samples/](https://github.com/googleapis/mcp-toolbox-sdk-go/tree/main/tbgenkit/samples) folder
+
+# Contributing
+
+Contributions are welcome! Please refer to the [DEVELOPER.md](/DEVELOPER.md)
+file for guidelines on how to set up a development environment and run tests.
+
+# License
+
+This project is licensed under the Apache License 2.0. See the
+[LICENSE](https://github.com/googleapis/mcp-toolbox-sdk-go/blob/main/LICENSE) file for details.
+
+# Support
+
+If you encounter issues or have questions, check the existing [GitHub Issues](https://github.com/googleapis/genai-toolbox/issues) for the main Toolbox project.
+
+# Samples for Reference
+
+<details>
+<summary>Genkit Go</summary>
+
+```go
+//This sample contains a complete example on how to integrate MCP Toolbox Go SDK with Genkit Go using the tbgenkit package.
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/googleapis/mcp-toolbox-sdk-go/core"
+	"github.com/googleapis/mcp-toolbox-sdk-go/tbgenkit"
+
+	"github.com/firebase/genkit/go/ai"
+	"github.com/firebase/genkit/go/genkit"
+	"github.com/firebase/genkit/go/plugins/googlegenai"
+)
+
+func main() {
+	ctx := context.Background()
+	toolboxClient, err := core.NewToolboxClient("http://127.0.0.1:5000")
+	if err != nil {
+		log.Fatalf("Failed to create Toolbox client: %v", err)
+	}
+
+	// Load the tools using the MCP Toolbox SDK.
+	tools, err := toolboxClient.LoadToolset("my-toolset", ctx)
+	if err != nil {
+		log.Fatalf("Failed to load tools: %v\nMake sure your Toolbox server is running and the tool is configured.", err)
+	}
+
+	// Initialize genkit
+  g := genkit.Init(ctx,
+		genkit.WithPlugins(&googlegenai.GoogleAI{}),
+		genkit.WithDefaultModel("googleai/gemini-1.5-flash"),
+	)
+
+	// Convert your tool to a Genkit tool.
+	genkitTools := make([]ai.Tool, len(tools))
+	for i, tool := range tools {
+		newTool, err := tbgenkit.ToGenkitTool(tool, g)
+		if err != nil {
+			log.Fatalf("Failed to convert tool: %v\n", err)
+		}
+		genkitTools[i] = newTool
+	}
+
+	toolRefs := make([]ai.ToolRef, len(genkitTools))
+
+	for i, tool := range genkitTools {
+		toolRefs[i] = tool
+	}
+
+	// Generate llm response using prompts and tools.
+	resp, err := genkit.Generate(ctx, g,
+		ai.WithPrompt("Find hotels in Basel with Basel in it's name."),
+		ai.WithTools(toolRefs...),
+	)
+	if err != nil {
+		log.Fatalf("%v\n", err)
+	}
+	fmt.Println(resp.Text())
+}
+```
+
+</details>