Provide Installed property to Agent.

src/Infrastructure/BotSharp.Abstraction/Agents/Models/Agent.cs

@@ -63,6 +63,9 @@ public class Agent
     [JsonIgnore]
     public PluginDef Plugin {  get; set; }
 
+    [JsonIgnore]
+    public bool Installed => Plugin.Enabled;
+
     /// <summary>
     /// Allow to be routed
     /// </summary>

src/Infrastructure/BotSharp.Abstraction/Repositories/Filters/AgentFilter.cs

@@ -4,6 +4,7 @@ public class AgentFilter
 {
     public string? AgentName { get; set; }
     public bool? Disabled { get; set; }
+    public bool? Installed { get; set; }
     public bool? AllowRouting { get; set; }
     public bool? IsPublic { get; set; }
     public bool? IsRouter { get; set; }

src/Infrastructure/BotSharp.Core/Agents/Services/AgentService.GetAgents.cs

@@ -21,7 +21,9 @@ public partial class AgentService
             agent.Plugin = GetPlugin(agent.Id);
         }
 
-        return await Task.FromResult(agents);
+        agents = agents.Where(x => x.Installed).ToList();
+
+        return agents;
     }
 
 #if !DEBUG

src/Infrastructure/BotSharp.Core/Agents/Services/AgentService.GetPlugin.cs

@@ -18,7 +18,8 @@ public partial class AgentService
                     agentId
                 },
                 Assembly = typeof(AgentService).Assembly.FullName.Split(',').First(),
-                Name = "BotSharp.Core"
+                Name = "BotSharp",
+                Enabled = true,
             };
     }
 }