diff --git a/astrbot/core/skills/skill_manager.py b/astrbot/core/skills/skill_manager.py
index d996dd7a070..c2fa83d74d3 100644
--- a/astrbot/core/skills/skill_manager.py
+++ b/astrbot/core/skills/skill_manager.py
@@ -268,9 +268,10 @@ def build_skills_prompt(skills: list[SkillInfo]) -> str:
         "*Never silently skip a matching skill* — either use it or briefly "
         "explain why you chose not to.\n"
         "3. **Mandatory grounding** — Before executing any skill you MUST "
-        "first read its `SKILL.md` by running a shell command compatible "
-        "with the current runtime shell and using the **absolute path** "
-        f"shown above (e.g. `{example_command}`). "
+        "first read its `SKILL.md` in full using the **absolute path** "
+        "shown above. Use an available, permitted file-reading tool first, "
+        "or an available, permitted shell command compatible with the "
+        f"current runtime shell (e.g. `{example_command}`). "
         "Never rely on memory or assumptions about a skill's content.\n"
         "4. **Progressive disclosure** — Load only what is directly "
         "referenced from `SKILL.md`:\n"