// Define your request/response types (shared with the endpoint)
class SimilarRequest  { public string Query { get; set; } }
class TicketSummary   { public string Id { get; set; } public string Subject { get; set; } }

// Render a list of similar tickets
VStack().Children(
    TextBlock("Similar tickets").SemiBold(),
    Defer(async () =>
    {
        var results = await Mosaik.API.Endpoints
            .CallAsync<SimilarRequest, TicketSummary[]>(
                "similar-tickets",
                new SimilarRequest { Query = currentTicket.Body });

        return VStack().Children(
            results.Select(t =>
                Card().Children(
                    TextBlock(t.Subject),
                    TextBlock(t.Id).Small().Muted()
                )
            )
        );
    })
).Render();