Anthropic SDK / Claude Agent SDK

pip install langsight anthropic

from langsight.sdk import LangSightClient
from langsight.integrations.anthropic_sdk import langsight_anthropic_tool

client = LangSightClient(url="http://localhost:8000")

@langsight_anthropic_tool(client=client, server_name="my-tools")
async def get_weather(location: str) -> str:
    """Get current weather for a location."""
    return f"72°F and sunny in {location}"

@langsight_anthropic_tool(client=client, server_name="my-tools")
async def search_docs(query: str) -> str:
    """Search the documentation."""
    return await do_search(query)

from langsight.integrations.anthropic_sdk import AnthropicToolTracer

tracer = AnthropicToolTracer(
    client=client,
    agent_name="assistant",
    session_id="sess-001",
)

# Your standard Anthropic SDK loop
response = await anthropic.messages.create(
    model="claude-sonnet-4-6",
    messages=[{"role": "user", "content": "What's the weather in NYC?"}],
    tools=[weather_tool, search_tool],
)

# Record what tools the model requested
await tracer.trace_response(response)

# Execute tools and trace the execution
for block in response.content:
    if block.type == "tool_use":
        result = await tracer.execute_and_trace(
            block.name, block.input, tool_handlers[block.name]
        )

from langsight.integrations.anthropic_sdk import LangSightClaudeAgentHooks

hooks = LangSightClaudeAgentHooks(
    client=client,
    agent_name="support-agent",
    session_id="sess-001",
    trace_id="trace-abc",
)

# Pass as lifecycle hooks
result = await runner.run(agent, hooks=hooks)

langsight sessions --id sess-001