diff --git a/dare_framework/context/context.py b/dare_framework/context/context.py
index d6b67173..8dde1185 100644
--- a/dare_framework/context/context.py
+++ b/dare_framework/context/context.py
@@ -115,6 +115,10 @@ def sys_prompt(self) -> Prompt | None:
     def sys_skill(self) -> Skill | None:
         return self._sys_skill
 
+    def set_skill(self, skill: Skill | None) -> None:
+        """Mount or replace current skill at runtime. None clears."""
+        self._sys_skill = skill
+
     @property
     def context_window_tokens(self) -> int | None:
         """LLM 单次请求上下文窗口大小（用于压缩），单位 token。"""
diff --git a/dare_framework/context/kernel.py b/dare_framework/context/kernel.py
index 50193a25..e4314193 100644
--- a/dare_framework/context/kernel.py
+++ b/dare_framework/context/kernel.py
@@ -66,6 +66,11 @@ def sys_skill(self) -> Skill | None:
         """
         ...
 
+    @abstractmethod
+    def set_skill(self, skill: Skill | None) -> None:
+        """Mount or replace the active skill at runtime. None clears."""
+        ...
+
     # Short-term memory
 
     @abstractmethod
diff --git a/docs/features/fix-context-set-skill.md b/docs/features/fix-context-set-skill.md
index f6ea45ba..c9eb5225 100644
--- a/docs/features/fix-context-set-skill.md
+++ b/docs/features/fix-context-set-skill.md
@@ -42,4 +42,5 @@ None.
 
 ### Review and Merge Gate Links
 
-- Intent PR: (this document)
+- Intent PR: https://github.com/clowder-labs/Deterministic-Agent-Runtime-Engine/pull/228
+- Implementation PR: https://github.com/clowder-labs/Deterministic-Agent-Runtime-Engine/pull/227