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Working with Multiple Sessions

Manage multiple independent conversations simultaneously.

Runnable example: recipe/multiple-sessions.cs

dotnet run recipe/multiple-sessions.cs

Example scenario

You need to run multiple conversations in parallel, each with its own context and history.

C

using GitHub.Copilot.SDK;

await using var client = new CopilotClient();
await client.StartAsync();

// Create multiple independent sessions
var session1 = await client.CreateSessionAsync(new SessionConfig
{
    Model = "gpt-5",
    OnPermissionRequest = PermissionHandler.ApproveAll
});
var session2 = await client.CreateSessionAsync(new SessionConfig
{
    Model = "gpt-5",
    OnPermissionRequest = PermissionHandler.ApproveAll
});
var session3 = await client.CreateSessionAsync(new SessionConfig
{
    Model = "claude-sonnet-4.5",
    OnPermissionRequest = PermissionHandler.ApproveAll
});

// Each session maintains its own conversation history
await session1.SendAsync(new MessageOptions { Prompt = "You are helping with a Python project" });
await session2.SendAsync(new MessageOptions { Prompt = "You are helping with a TypeScript project" });
await session3.SendAsync(new MessageOptions { Prompt = "You are helping with a Go project" });

// Follow-up messages stay in their respective contexts
await session1.SendAsync(new MessageOptions { Prompt = "How do I create a virtual environment?" });
await session2.SendAsync(new MessageOptions { Prompt = "How do I set up tsconfig?" });
await session3.SendAsync(new MessageOptions { Prompt = "How do I initialize a module?" });

// Clean up all sessions
await session1.DisposeAsync();
await session2.DisposeAsync();
await session3.DisposeAsync();

Custom session IDs

Use custom IDs for easier tracking:

var session = await client.CreateSessionAsync(new SessionConfig
{
    SessionId = "user-123-chat",
    Model = "gpt-5",
    OnPermissionRequest = PermissionHandler.ApproveAll
});

Console.WriteLine(session.SessionId); // "user-123-chat"

Listing sessions

var sessions = await client.ListSessionsAsync();
foreach (var sessionInfo in sessions)
{
    Console.WriteLine($"Session: {sessionInfo.SessionId}");
}

Deleting sessions

// Delete a specific session
await client.DeleteSessionAsync("user-123-chat");

Use cases

  • Multi-user applications: One session per user
  • Multi-task workflows: Separate sessions for different tasks
  • A/B testing: Compare responses from different models