diff --git a/letta/prompts/system/memgpt_generate_tool.txt b/letta/prompts/system/memgpt_generate_tool.txt
index 826b578b..17a9353a 100644
--- a/letta/prompts/system/memgpt_generate_tool.txt
+++ b/letta/prompts/system/memgpt_generate_tool.txt
@@ -34,7 +34,7 @@ You are are expert python programmer that is tasked with generating python sourc
 **Quick Rules for Generation**
 1. **Use a flat, one-line signature** with only native types:
    ```python
-   def tool_name(param1: str, flag: bool = True) -> dict:
+   def tool_name(param1: str, flag: bool) -> dict:
    ```
 2. **Docstring `Args:`** must list each parameter with a **single token** type (`str`, `bool`, `int`, `float`, `list`, `dict`).
 3. **Avoid** `Union[...]`, `List[...]`, multi-line signatures, or pipes in types.
@@ -50,7 +50,7 @@ You are are expert python programmer that is tasked with generating python sourc
 
 Example:
 ```python
-def get_price(coin_ids: str, vs_currencies: str, include_market_cap: bool) -> dict:
+def get_price(coin_ids: str, vs_currencies: str, reverse: bool) -> list:
 ```
 </tool_signature>
 
@@ -62,17 +62,17 @@ A docstring must always be generated and formatted correctly as part of any gene
 
 Example:
 ```python
-def get_price(coin_ids: str, vs_currencies: str, include_market_cap: bool) -> dict:
+def get_price(coin_ids: str, vs_currencies: str, reverse: bool) -> list:
     """
     Fetch prices from CoinGecko.
 
     Args:
         coin_ids (str): Comma-separated CoinGecko IDs.
         vs_currencies (str): Comma-separated target currencies.
-        include_market_cap (bool): Include market-cap data.
+        reverse (bool): Reverse the order of the coin_ids for the output list.
 
     Returns:
-        dict: Result with a key for each specified coin_id where the value is a nested dict with the price in the target currency and optional market_cap.
+        list: the prices in the target currency, in the same order as the coin_ids if reverse is False, otherwise in the reverse order
     """
     ...
 ```
@@ -106,13 +106,14 @@ def get_price(coin_ids: str, vs_currencies: str, include_market_cap: bool) -> di
 <tool_sample_args>
 - **Required** to be generated on every turn so solution can be tested successfully.
 - **Must** be valid JSON string, where each key is the name of an argument and each value is the proposed value for that argument, as a string.
+- **Infer** values from the conversation with the user when possible so they values are aligned with their use case.
 
 Example:
 ```JSON
 {
     "coin_ids": "bitcoin,ethereum",
     "vs_currencies": "usd",
-    "include_market_cap": "true"
+    "reverse": "False"
 }
 ```
 </tool_sample_args>
diff --git a/letta/server/rest_api/routers/v1/tools.py b/letta/server/rest_api/routers/v1/tools.py
index 45bd4e04..4f47470e 100644
--- a/letta/server/rest_api/routers/v1/tools.py
+++ b/letta/server/rest_api/routers/v1/tools.py
@@ -971,7 +971,7 @@ async def generate_tool_from_prompt(
         response_data = await llm_client.request_async(request_data, llm_config)
         response = llm_client.convert_response_to_chat_completion(response_data, input_messages, llm_config)
         output = json.loads(response.choices[0].message.tool_calls[0].function.arguments)
-        pip_requirements = [PipRequirement(name=k, version=v) for k, v in json.loads(output["pip_requirements_json"]).items()]
+        pip_requirements = [PipRequirement(name=k, version=v or None) for k, v in json.loads(output["pip_requirements_json"]).items()]
         return GenerateToolOutput(
             tool=Tool(
                 name=request.tool_name,