langsmith_via_openinference.py
"""
LangSmith Via OpenInference
===========================
Demonstrates instrumenting an Agno agent with OpenInference and sending traces to LangSmith.
"""
import os
from agno.agent import Agent
from agno.models.openai import OpenAIChat
from agno.tools.websearch import WebSearchTools
from openinference.instrumentation.agno import AgnoInstrumentor
from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import SimpleSpanProcessor
# ---------------------------------------------------------------------------
# Setup
# ---------------------------------------------------------------------------
endpoint = "https://eu.api.smith.langchain.com/otel/v1/traces"
headers = {
"x-api-key": os.getenv("LANGSMITH_API_KEY"),
"Langsmith-Project": os.getenv("LANGSMITH_PROJECT"),
}
tracer_provider = TracerProvider()
tracer_provider.add_span_processor(
SimpleSpanProcessor(OTLPSpanExporter(endpoint=endpoint, headers=headers))
)
# Start instrumenting agno
AgnoInstrumentor().instrument(tracer_provider=tracer_provider)
# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------
agent = Agent(
name="Stock Market Agent",
model=OpenAIChat(id="gpt-4o-mini"),
tools=[WebSearchTools()],
markdown=True,
debug_mode=True,
)
# ---------------------------------------------------------------------------
# Run Example
# ---------------------------------------------------------------------------
if __name__ == "__main__":
agent.print_response("What is news on the stock market?")
Run the Example
1
Set up your virtual environment
uv venv --python 3.12
source .venv/bin/activate
uv venv --python 3.12
.venv\Scripts\activate
2
Install dependencies
uv pip install -U agno ddgs openai openinference-instrumentation-agno opentelemetry-exporter-otlp opentelemetry-sdk
3
Export environment variables
export LANGSMITH_API_KEY="your_langsmith_api_key_here"
export LANGSMITH_PROJECT="your_langsmith_project_here"
export OPENAI_API_KEY="your_openai_api_key_here"
$Env:LANGSMITH_API_KEY="your_langsmith_api_key_here"
$Env:LANGSMITH_PROJECT="your_langsmith_project_here"
$Env:OPENAI_API_KEY="your_openai_api_key_here"
4
Run the example
Save the code above as
langsmith_via_openinference.py, then run:python langsmith_via_openinference.py