Streaming Agent

Code

1from typing import Iterator  # noqa
2from kern.agent import Agent, RunOutputEvent  # noqa
3from kern.models.anthropic import Claude
4
5agent = Agent(model=Claude(id="claude-sonnet-4-20250514"), markdown=True)
6
7# Get the response in a variable
8# run_response: Iterator[RunOutputEvent] = agent.run("Share a 2 sentence horror story", stream=True)
9# for chunk in run_response:
10#     print(chunk.content)
11
12# Print the response in the terminal
13agent.print_response("Share a 2 sentence horror story", stream=True)

Usage

Set up your virtual environment

1uv venv --python 3.12
2source .venv/bin/activate

1uv venv --python 3.12
2.venv\Scripts\activate

Set your API key

1export ANTHROPIC_API_KEY=xxx

Install dependencies

1uv pip install -U anthropic kern-ai

Run Agent

1python cookbook/11_models/anthropic/basic_stream.py