Third-party integrations

Third-party integrations are not officially supported by Logfire.

They are maintained by the community and may not be as reliable as the integrations developed by Logfire.

Claude Agent SDK

You can instrument the Python Claude Agent SDK using Logfire and Langsmith.

Note

This is separate from the anthropic integration. The Claude Agent SDK doesn't actually use the anthropic package under the hood.

First, install dependencies:

pip install 'langsmith[claude-agent-sdk, otel]'

Here's an example script:

from langsmith.integrations.claude_agent_sdk import configure_claude_agent_sdk
import logfire
import os
import asyncio
from claude_agent_sdk import (
    ClaudeAgentOptions,
    ClaudeSDKClient,
    tool,
    create_sdk_mcp_server,
)
from typing import Any

# These environment variables enable Langsmith OpenTelemetry tracing,
# instead of sending traces to Langsmith directly.
os.environ['LANGSMITH_OTEL_ENABLED'] = "true"
os.environ['LANGSMITH_OTEL_ONLY'] = "true"
os.environ['LANGSMITH_TRACING'] = "true"

# Ensure that OpenTelemetry traces are sent to Logfire
logfire.configure()

# Instrument the Claude Agent SDK with Langsmith
configure_claude_agent_sdk()

# Example of using a tool in the Claude Agent SDK:
@tool(
    "get_weather",
    "Gets the current weather for a given city",
    {
        "city": str,
    },
)
async def get_weather(args: dict[str, Any]) -> dict[str, Any]:
    """Simulated weather lookup tool"""
    city = args["city"]
    weather = "Cloudy, 59°F"
    return {"content": [{"type": "text", "text": f"Weather in {city}: {weather}"}]}


async def main():
    weather_server = create_sdk_mcp_server(
        name="weather",
        version="1.0.0",
        tools=[get_weather],
    )

    options = ClaudeAgentOptions(
        system_prompt="You are a friendly travel assistant who helps with weather information.",
        mcp_servers={"weather": weather_server},
        allowed_tools=["mcp__weather__get_weather"],
    )

    async with ClaudeSDKClient(options=options) as client:
        await client.query("What's the weather like in Berlin?")

        async for message in client.receive_response():
            print(message)


asyncio.run(main())

Warning

Only the ClaudeSDKClient is instrumented, not the top-level claude_agent_sdk.query() function.

The resulting trace looks like this in Logfire: