From 2105d0df2cf2574022f105d80d9e49ecaf524af4 Mon Sep 17 00:00:00 2001
From: Hannes Rudolph <hrudolph@gmail.com>
Date: Mon, 2 Mar 2026 16:34:34 -0700
Subject: [PATCH] fix: prevent redundant skill reloading in conversation

Add deduplication constraint to skill matching instructions so models
don't re-invoke the skill tool for content already present in the
conversation history.
---
 src/core/prompts/sections/skills.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/core/prompts/sections/skills.ts b/src/core/prompts/sections/skills.ts
index e34d314faf3..6cd3a71d75f 100644
--- a/src/core/prompts/sections/skills.ts
+++ b/src/core/prompts/sections/skills.ts
@@ -74,6 +74,7 @@ Step 2: Branching Decision
 CONSTRAINTS:
 - Do NOT load every skill up front.
 - Load skills ONLY after a skill is selected.
+- Do NOT reload a skill whose instructions already appear in this conversation.
 - Do NOT skip this check.
 - FAILURE to perform this check is an error.
 </mandatory_skill_check>