Langtrace Integration

Demonstrates instrumenting an Agno agent with Langtrace.

This example initializes Langtrace after importing Agno model modules, so automatic instrumentation may not attach. Create a Langtrace project and generate an API key before running the example. See Langtrace Python SDK setup.

langtrace_op.py

"""
Langtrace Integration
=====================

Demonstrates instrumenting an Agno agent with Langtrace.
"""

# Must precede other imports
from agno.agent import Agent
from agno.models.openai import OpenAIChat
from agno.tools.yfinance import YFinanceTools
from langtrace_python_sdk import langtrace  # type: ignore

# ---------------------------------------------------------------------------
# Setup
# ---------------------------------------------------------------------------
langtrace.init()


# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
agent = Agent(
    name="Stock Price Agent",
    model=OpenAIChat(id="gpt-5.2"),
    tools=[YFinanceTools()],
    instructions="You are a stock price agent. Answer questions in the style of a stock analyst.",
)


# ---------------------------------------------------------------------------
# Run Example
# ---------------------------------------------------------------------------
if __name__ == "__main__":
    agent.print_response("What is the current price of Tesla?")

Run the Example

Set up your virtual environment

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

Install dependencies

uv pip install -U agno langtrace-python-sdk openai yfinance

Export your Langtrace and OpenAI API keys

export LANGTRACE_API_KEY="your_langtrace_api_key_here"
export OPENAI_API_KEY="your_openai_api_key_here"

Save and fix the initialization order

Save the code above as langtrace_op.py, then move the langtrace_python_sdk import and langtrace.init() before every Agno and OpenAI import.

Run the example

Run the corrected file:

python langtrace_op.py

Full source: cookbook/observability/langtrace_op.py