Cannot access internal class 'McpClient' here

[yanBrandao]

Describe the bug
I'm trying to replicate some sample of Elicitation McpClient or QuickstartClient but it's not working, there's missing class dependencies. My .csproject have this:

<ItemGroup>
        <PackageReference Include="ModelContextProtocol" Version="0.3.0-preview.4" />
        <PackageReference Include="ModelContextProtocol.Core" Version="0.3.0-preview.4" />
       ....

To Reproduce
Steps to reproduce the behavior:

1. Create new repository
2. Install ModelContextProtocol and ModelContextProtocol.Core too
3. In your Program.cs try to use McpClient class

Expected behavior
McpClient should work correctly like documentation specify.

Logs

/path/to/myproject/Sample.MCP.Client/Program.cs(23,27): error CS0246: The type or namespace name 'HttpClientTransport' could not be found (are you missing a using directive or an assembly reference?)
/path/to/myproject/Sample.MCP.Client/Program.cs(37,35): error CS0122: 'McpClient' is inaccessible due to its protection level

[vltmedia]

Can confirm, blank project with just the QuickstartClient code, and the current Nuget build is showing the error above.

[vltmedia]

@yanBrandao looks like there were breaking changes a month ago and the samples or the README.md on Github haven't been updated to reflect the change to the McpClient , but it is updated on the Nuget page page.

#786 Addresses this.

They changed McpClient -> McpClientFactory

Example to get it to work on .NetStandard 2.0 . Should be fine on newer .Net versions.

    public async Task Initialize()
    {
        
        var transport = new StdioClientTransportOptions
        {
            Name = "Filesystem",
            Command = "npx",
            Arguments = new List<string>() { "-y", "@modelcontextprotocol/server-filesystem" },
        };
        var clientTransport = new StdioClientTransport(transport);
        
         var client = await McpClientFactory.CreateAsync(clientTransport);

// // Print the list of tools available from the server.
         foreach (var tool in await client.ListToolsAsync())
         {
             Console.WriteLine($"{tool.Name} ({tool.Description})");
         }

}

[yanBrandao]

Hey @vltmedia really thanks for being so clear in your explanation.