Tool Crawl4AI has error with Ollama

[vanetreg]

I use newest versions:
phidata 2.7.3
crawl4ai 0.4.23
ollama 0.4.4
crawl4ai example code works with
model=OpenAIChat(id="gpt-4o-mini"),
but not with:
model=Ollama(id="llama3.2:latest", host = ollama_base_url),

The full code used:

from phi.agent import Agent
from phi.model.ollama import Ollama
from phi.tools.crawl4ai_tools import Crawl4aiTools
import os
from dotenv import load_dotenv

load_dotenv()

ollama_base_url = os.getenv("OLLAMA_BASE_URL")

agent = Agent(
    model=Ollama(id="llama3.2:latest", host = ollama_base_url),
    tools=[Crawl4aiTools(max_length="1000")],
    show_tool_calls=True
)
agent.print_response("Summarize me the key points in bullet points of this: https://blog.google/products/gemini/google-gemini-deep-research/", stream=True)

I got error:

(phidata-venv) PS D:\Projects\AI_testing\phidata> python .\crawl4ai_tool_ollama.py
▰▰▰▰▰▰▱ Thinking...
┏━ Message ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓┃                                                                                                                                                       ┃┃ Summarize me the key points in bullet points of this: https://blog.google/products/gemini/google-gemini-deep-research/                                ┃┃                                                                                                                                                       ┃┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛Traceback (most recent call last):
  File "D:\Projects\AI_testing\phidata\crawl4ai_tool_ollama.py", line 16, in <module>
    agent.print_response("Summarize me the key points in bullet points of this: https://blog.google/products/gemini/google-gemini-deep-research/", stream=True)
  File "D:\Projects\AI_testing\phidata\phidata-venv\Lib\site-packages\phi\agent\agent.py", line 2783, in print_response
    for resp in self.run(message=message, messages=messages, stream=True, **kwargs):
  File "D:\Projects\AI_testing\phidata\phidata-venv\Lib\site-packages\phi\agent\agent.py", line 1794, in _run
    for model_response_chunk in self.model.response_stream(messages=messages_for_model):
                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\AI_testing\phidata\phidata-venv\Lib\site-packages\phi\model\ollama\chat.py", line 597, in response_stream
    for response in self.invoke_stream(messages=messages):
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\AI_testing\phidata\phidata-venv\Lib\site-packages\phi\model\ollama\chat.py", line 236, in invoke_stream
    yield from self.get_client().chat(
  File "D:\Projects\AI_testing\phidata\phidata-venv\Lib\site-packages\ollama\_client.py", line 339, in chat
    tools=[tool for tool in _copy_tools(tools)],
                            ^^^^^^^^^^^^^^^^^^
  File "D:\Projects\AI_testing\phidata\phidata-venv\Lib\site-packages\ollama\_client.py", line 1133, in _copy_tools
    yield convert_function_to_tool(unprocessed_tool) if callable(unprocessed_tool) else Tool.model_validate(unprocessed_tool)
                                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\AI_testing\phidata\phidata-venv\Lib\site-packages\pydantic\main.py", line 627, in model_validate
    return cls.__pydantic_validator__.validate_python(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.ValidationError: 1 validation error for Tool
function.parameters.properties.max_length.type
  Input should be a valid string [type=string_type, input_value=['number', 'null'], input_type=list]
    For further information visit https://errors.pydantic.dev/2.10/v/string_type

Note I used 3.5-sonnet in Cursor for debugging and I tried to set
max_length to default None, 1000 and "1000"
in "Crawl4aiTools(max_length="1000")"
but none ot them worked, had the same error...