Workflows are the main authoring model.

options.ConfigureBuilder(agentBuilder =>
{
    agentBuilder.AddWorkflow<SupportInboxCapabilities>("support-inbox", agent =>
    {
        agent.WithRoutePrefixes("/support");
    });
});

[AgentCapability("support_inbox", Name = "Support Inbox")]
public sealed class SupportInboxCapabilities
{
    [AgentAction("Show open tickets that still need a reply")]
    public Task<CapabilityResult> ShowOpenTicketsAsync(int days = 7)
        => Task.FromResult(
            CapabilityResult.Success($"Highlighted tickets from the last {days} days."));

    [AgentAction("Draft a reply for the highlighted tickets", RequiresApproval = true)]
    public Task<CapabilityResult> DraftReplyAsync()
        => Task.FromResult(
            CapabilityResult.Success("Prepared the reply draft.")
                .WithNextActions("Review the reply", "Approve the draft"));
}

• Keep actions semantic and user-facing.
• Use WithRoutePrefixes(...) to scope the workflow.
• Mark risky or mutating actions with approval.
• Return CapabilityResult with warnings and next actions when useful.