diff --git a/lumen/ai/analysis.py b/lumen/ai/analysis.py
index 5593b3cc..45c07c9b 100644
--- a/lumen/ai/analysis.py
+++ b/lumen/ai/analysis.py
@@ -29,6 +29,8 @@ class Analysis(param.ParameterizedFunction):
      # Whether to allow the analysis to be called multiple times in a row
     _consecutive_calls = False
 
+    _callable_by_llm = True
+
     _field_params = []
 
     @classmethod
@@ -60,6 +62,8 @@ class Join(Analysis):
 
     context = param.String(doc="Additional context to provide to the LLM.")
 
+    _callable_by_llm = False
+
     _previous_table = param.Parameter()
 
     _previous_source = param.Parameter()
diff --git a/lumen/ai/assistant.py b/lumen/ai/assistant.py
index 4fdfad20..8ede84b3 100644
--- a/lumen/ai/assistant.py
+++ b/lumen/ai/assistant.py
@@ -344,7 +344,7 @@ async def _choose_agent(self, messages: list | str, agents: list[Agent]):
             if isinstance(agent, AnalysisAgent):
                 analyses = "\n".join(
                     f"- `{analysis.__name__}`: {(analysis.__doc__ or '').strip()}"
-                    for analysis in agent.analyses
+                    for analysis in agent.analyses if analysis._callable_by_llm
                 )
                 agent.__doc__ = f"Available analyses include:\n{analyses}\nSelect this agent to perform one of these analyses."
                 break