Program.cs

using GitHub.Copilot;
using GitHub.Copilot.Rpc;

var permissionLog = new List<string>();

using var client = new CopilotClient();

await client.StartAsync();

try
{
    await using var session = await client.CreateSessionAsync(new SessionConfig
    {
        Model = "claude-haiku-4.5",
        OnPermissionRequest = (request, invocation) =>
        {
            var toolName = request switch
            {
                PermissionRequestCustomTool ct => ct.ToolName,
                PermissionRequestShell sh => "shell",
                PermissionRequestWrite wr => wr.FileName ?? "write",
                PermissionRequestRead rd => rd.Path ?? "read",
                PermissionRequestMcp mcp => mcp.ToolName ?? "mcp",
                _ => request.Kind,
            };
            permissionLog.Add($"approved:{toolName}");
            return Task.FromResult<PermissionDecision>(PermissionDecision.ApproveOnce());
        },
        Hooks = new SessionHooks
        {
            OnPreToolUse = (input, invocation) =>
                Task.FromResult<PreToolUseHookOutput?>(new PreToolUseHookOutput { PermissionDecision = "allow" }),
        },
    });

    var response = await session.SendAndWaitAsync(new MessageOptions
    {
        Prompt = "List the files in the current directory using glob with pattern '*.md'.",
    });

    if (response != null)
    {
        Console.WriteLine(response.Data?.Content);
    }

    Console.WriteLine("\n--- Permission request log ---");
    foreach (var entry in permissionLog)
    {
        Console.WriteLine($"  {entry}");
    }
    Console.WriteLine($"\nTotal permission requests: {permissionLog.Count}");
}
finally
{
    await client.StopAsync();
}