Installation & First Crew

BeginnerTopic 2 of 24Open in Colab

Installation & First Crew

Get CrewAI installed and run your first multi-agent crew in minutes.

Prerequisites

Python 3.10 or later
An OpenAI API key (or another supported LLM provider)

Install CrewAI

pip install crewai crewai-tools

Set Up Your API Key

export OPENAI_API_KEY="sk-your-key-here"

Your First Crew

Create a file called main.py:

from crewai import Agent, Task, Crew
 
researcher = Agent(
    role="AI Researcher",
    goal="Find the latest trends in AI agents",
    backstory="You are an expert AI researcher who stays current with the latest developments in autonomous agents and multi-agent systems.",
    verbose=True,
)
 
writer = Agent(
    role="Technical Writer",
    goal="Write clear, engaging summaries of technical topics",
    backstory="You are a skilled technical writer who makes complex AI topics accessible to developers.",
    verbose=True,
)
 
research_task = Task(
    description="Research the top 3 trends in AI agents for 2025. Focus on practical applications.",
    expected_output="A bullet-point list of 3 trends with a one-paragraph explanation each.",
    agent=researcher,
)
 
write_task = Task(
    description="Write a short blog post summarizing the research findings.",
    expected_output="A 300-word blog post with an introduction, 3 sections (one per trend), and a conclusion.",
    agent=writer,
)
 
crew = Crew(
    agents=[researcher, writer],
    tasks=[research_task, write_task],
    verbose=True,
)
 
result = crew.kickoff()
print(result)

Run It

python main.py

You'll see both agents working in sequence — the researcher gathers information, then the writer produces a polished blog post using those findings.

What Just Happened?

Two agents were created with distinct roles and goals
Two tasks were defined with clear expected outputs
A crew was assembled, linking agents to tasks
crew.kickoff() executed the tasks in sequential order

Next Steps

Now that you've seen a crew in action, let's dive deeper into how to define agents effectively.

What is CrewAI?

Defining Agents with Roles & Goals