diff --git a/src/ai_client.py b/src/ai_client.py
index 48d292f..8579e4d 100644
--- a/src/ai_client.py
+++ b/src/ai_client.py
@@ -51,6 +51,7 @@ _history_trunc_limit: int = 8000
 events: EventEmitter = EventEmitter()
 
 def set_model_params(temp: float, max_tok: int, trunc_limit: int = 8000, top_p: float = 1.0) -> None:
+ """Sets global generation parameters like temperature and max tokens."""
  global _temperature, _max_tokens, _history_trunc_limit, _top_p
  _temperature = temp
  _max_tokens = max_tok
@@ -146,6 +147,7 @@ _global_tool_instructions: str = ""
 _project_context_marker: str = ""
 
 def set_custom_system_prompt(prompt: str) -> None:
+ """Sets a custom system prompt to be combined with the default instructions."""
  global _custom_system_prompt
  _custom_system_prompt = prompt
 
@@ -355,6 +357,7 @@ def _classify_minimax_error(exc: Exception) -> ProviderError:
  return ProviderError("unknown", "minimax", Exception(body))
 
 def set_provider(provider: str, model: str) -> None:
+ """Updates the active LLM provider and model name."""
  global _provider, _model
  _provider = provider
  if provider == "gemini_cli":
@@ -373,9 +376,11 @@ def set_provider(provider: str, model: str) -> None:
   _model = model
 
 def get_provider() -> str:
+ """Returns the current active provider name."""
  return _provider
 
 def cleanup() -> None:
+ """Performs cleanup operations like deleting server-side Gemini caches."""
  global _gemini_client, _gemini_cache, _gemini_cached_file_paths
  if _gemini_client and _gemini_cache:
   try:
@@ -385,6 +390,7 @@ def cleanup() -> None:
  _gemini_cached_file_paths = []
 
 def reset_session() -> None:
+ """Clears conversation history and resets provider-specific session state."""
  global _gemini_client, _gemini_chat, _gemini_cache
  global _gemini_cache_md_hash, _gemini_cache_created_at, _gemini_cached_file_paths
  global _anthropic_client, _anthropic_history
@@ -494,6 +500,7 @@ TOOL_NAME: str = "run_powershell"
 _agent_tools: dict[str, bool] = {}
 
 def set_agent_tools(tools: dict[str, bool]) -> None:
+ """Configures which tools are enabled for the AI agent."""
  global _agent_tools, _CACHED_ANTHROPIC_TOOLS
  _agent_tools = tools
  _CACHED_ANTHROPIC_TOOLS = None
@@ -529,6 +536,7 @@ def set_tool_preset(preset_name: Optional[str]) -> None:
  _CACHED_ANTHROPIC_TOOLS = None
 
 def set_bias_profile(profile_name: Optional[str]) -> None:
+ """Sets the active tool bias profile for tuning model behavior."""
  global _active_bias_profile
  if not profile_name or profile_name == "None":
   _active_bias_profile = None
@@ -544,6 +552,7 @@ def set_bias_profile(profile_name: Optional[str]) -> None:
    sys.stderr.flush()
 
 def get_bias_profile() -> Optional[str]:
+ """Returns the name of the currently active bias profile."""
  return _active_bias_profile.name if _active_bias_profile else None
 
 def _build_anthropic_tools() -> list[dict[str, Any]]:
diff --git a/src/gemini_cli_adapter.py b/src/gemini_cli_adapter.py
index d2ff974..5d90e68 100644
--- a/src/gemini_cli_adapter.py
+++ b/src/gemini_cli_adapter.py
@@ -47,6 +47,7 @@ class GeminiCliAdapter:
     Adapter for the Gemini CLI that parses streaming JSON output.
     """
  def __init__(self, binary_path: str = "gemini"):
+  """Initializes the adapter with the path to the gemini CLI executable."""
   self.binary_path = binary_path
   self.session_id: Optional[str] = None
   self.last_usage: Optional[dict[str, Any]] = None