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@@ -48,8 +48,6 @@ class ExampleFlow(Flow):
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],
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)
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#TODO: NEED TO ADD AN EXAMPLE AGENT IN HERE AS WELL.
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random_city = response["choices"][0]["message"]["content"]
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# Store the city in our state
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self.state["city"] = random_city
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@@ -547,6 +545,97 @@ The `third_method` and `fourth_method` listen to the output of the `second_metho
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When you run this Flow, the output will change based on the random boolean value generated by the `start_method`.
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## Adding LiteAgent to Flows
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LiteAgents can be seamlessly integrated into your flows, providing a lightweight alternative to full Crews when you need simpler, focused task execution. Here's an example of how to use a LiteAgent within a flow to perform market research:
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```python
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from typing import List, cast
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from crewai_tools.tools.website_search.website_search_tool import WebsiteSearchTool
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from pydantic import BaseModel, Field
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from crewai.flow.flow import Flow, listen, start
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from crewai.lite_agent import LiteAgent
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# Define a structured output format
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class MarketAnalysis(BaseModel):
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key_trends: List[str] = Field(description="List of identified market trends")
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market_size: str = Field(description="Estimated market size")
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competitors: List[str] = Field(description="Major competitors in the space")
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# Define flow state
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class MarketResearchState(BaseModel):
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product: str = ""
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analysis: MarketAnalysis | None = None
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class MarketResearchFlow(Flow[MarketResearchState]):
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@start()
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def initialize_research(self):
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print(f"Starting market research for {self.state.product}")
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@listen(initialize_research)
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def analyze_market(self):
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# Create a LiteAgent for market research
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analyst = LiteAgent(
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role="Market Research Analyst",
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goal=f"Analyze the market for {self.state.product}",
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backstory="You are an experienced market analyst with expertise in "
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"identifying market trends and opportunities.",
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llm="gpt-4o",
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tools=[WebsiteSearchTool()],
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verbose=True,
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response_format=MarketAnalysis,
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)
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# Define the research query
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query = f"""
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Research the market for {self.state.product}. Include:
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1. Key market trends
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2. Market size
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3. Major competitors
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Format your response according to the specified structure.
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"""
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# Execute the analysis
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result = analyst.kickoff(query)
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self.state.analysis = cast(MarketAnalysis, result.pydantic)
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return result.pydantic
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@listen(analyze_market)
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def present_results(self):
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analysis = self.state.analysis
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if analysis is None:
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print("No analysis results available")
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return
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print("\nMarket Analysis Results")
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print("=====================")
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print("\nKey Market Trends:")
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for trend in analysis.key_trends:
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print(f"- {trend}")
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print(f"\nMarket Size: {analysis.market_size}")
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print("\nMajor Competitors:")
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for competitor in analysis.competitors:
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print(f"- {competitor}")
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# Usage example
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flow = MarketResearchFlow()
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result = flow.kickoff(inputs={"product": "AI-powered chatbots"})
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```
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This example demonstrates several key features of using LiteAgents in flows:
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1. **Structured Output**: Using Pydantic models to define the expected output format (`MarketAnalysis`) ensures type safety and structured data throughout the flow.
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2. **State Management**: The flow state (`MarketResearchState`) maintains context between steps and stores both inputs and outputs.
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3. **Tool Integration**: LiteAgents can use tools (like `WebsiteSearchTool`) to enhance their capabilities.
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If you want to learn more about LiteAgents, check out the [LiteAgent](/concepts/lite-agent) page.
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## Adding Crews to Flows
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Creating a flow with multiple crews in CrewAI is straightforward.
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