1 files changed, 20 insertions, 1 deletions
diff --git a/src/Agent.Core/Prompts/PromptComposer.cs b/src/Agent.Core/Prompts/PromptComposer.cs
index 69b18f3..2899088 100644
--- a/src/Agent.Core/Prompts/PromptComposer.cs
+++ b/src/Agent.Core/Prompts/PromptComposer.cs
@@ -13,8 +13,10 @@ public sealed record PromptContext(
     string SandboxCapabilitySummary,
     string TaskGraphSummary,
     string PreviousSummary,
+    IReadOnlyList<ExecutionResult> ExecutionResults,
     IReadOnlyList<ConversationMessage> Conversation,
     string Request,
+    bool RequiresExternalEffect,
     IReadOnlyList<string>? Images = null);
 
 public static class PromptComposer
@@ -29,7 +31,9 @@ public static class PromptComposer
             new("system", ComposeSkillCatalog(context.AvailableSkills)),
             new("system", context.SandboxCapabilitySummary),
             new("system", context.TaskGraphSummary),
-            new("system", context.PreviousSummary)
+            new("system", context.PreviousSummary),
+            new("system", ComposeExecutionResults(context.ExecutionResults)),
+            new("system", ComposeExecutionRequirement(context.RequiresExternalEffect))
         };
         // Inject selected skill instructions (Progressive Disclosure Stage 3).
         foreach (AgentSkill skill in context.SelectedSkills)
@@ -39,6 +43,21 @@ public static class PromptComposer
         return messages;
     }
 
+    private static string ComposeExecutionRequirement(bool requiresExternalEffect) => requiresExternalEffect
+        ? "The current Planner Task requires a verified external effect. Call the appropriate available Internal Tool now. " +
+          "A prose description, promise, plan, or fenced JSON example does not perform the operation and cannot complete this Task. " +
+          "After a successful read, use its returned content and proceed to the required write or process operation without repeating the read unnecessarily."
+        : "The current Planner Task does not require an external effect. Use an Internal Tool only when its verified result is needed; do not claim an unverified result.";
+
+    private static string ComposeExecutionResults(IReadOnlyList<ExecutionResult> results)
+    {
+        if (results.Count == 0) return "No prior Execution Results are available for the current Session.";
+        var lines = new List<string> { "Recent verified Execution Results:" };
+        foreach (ExecutionResult result in results)
+            lines.Add($"- {result.ToolName} ({(result.Success ? "success" : "failed")}): {result.Output}");
+        return string.Join("\n", lines);
+    }
+
     /// <summary>
     /// Stage 1 Discovery: only name + description are included. Full instructions are NOT included.
     /// </summary>