Knowledge in CrewAI is not Working

CrewAI Community Support
1

I ran the demo of “knowledge” from official website and could not get the expected output.

Virtual environment info:
requires-python = “>=3.12”
dependencies = [
“crewai==0.121.0”,
“crewai-tools>=0.45.0”,
“python-dotenv>=1.1.0”,
]

Here is the code I’m using:

from crewai import Agent, Task, Crew, Process, LLM
from crewai.knowledge.source.string_knowledge_source import StringKnowledgeSource

content = "Users name is John. He is 30 years old and lives in San Francisco."
string_source = StringKnowledgeSource(content=content)

llm = LLM(model="gpt-4o-mini", temperature=0)

agent = Agent(
    role="About User",
    goal="You know everything about the user.",
    backstory="You are a master at understanding people and their preferences.",
    verbose=True,
    allow_delegation=False,
    llm=llm,
)

task = Task(
    description="Answer the following questions about the user: {question}",
    expected_output="An answer to the question.",
    agent=agent,
)

crew = Crew(
    agents=[agent],
    tasks=[task],
    verbose=True,
    process=Process.sequential,
    knowledge_sources=[string_source], # Enable knowledge by adding the sources here
)

result = crew.kickoff(inputs={"question": "What city does John live in and how old is he?"})

print(result.raw)

The Output is → John lives in an unspecified city, and his age is not provided in the information available.