CrewAI

uv add langsight

[project]
dependencies = [
    "crewai>=1.5",
    "langsight",
]

uv sync

pip install langsight

#!/usr/bin/env python
import langsight

# Patches CrewAI event bus + Anthropic/OpenAI SDK automatically.
# Reads LANGSIGHT_URL, LANGSIGHT_API_KEY, LANGSIGHT_PROJECT_ID from env.
langsight.auto_patch()

from crewai import Agent, Task, Crew

analyst = Agent(
    role="SQL Analyst",
    goal="Write accurate SQL queries",
    backstory="You are an expert SQL analyst.",
)
task = Task(
    description="Count the number of orders in Q4 2024",
    expected_output="A SQL query and the result",
    agent=analyst,
)
crew = Crew(agents=[analyst], tasks=[task])
result = crew.kickoff()
# Done. Session grouping, agent attribution, and flush happen automatically.

LANGSIGHT_URL=http://localhost:8000
LANGSIGHT_API_KEY=ls_your_key_here
LANGSIGHT_PROJECT_ID=your_project_id_here

auto_patch.crewai.event_bus  status=active
auto_patch.complete          patched=['anthropic', 'crewai']

langsight sessions --hours 1

Session          Agent        Calls   Failed   Duration
bced92bc…        crew         24      0        2m 40s

langsight.auto_patch()
        │
        ├── Detects CrewAI >= 1.5
        │   └── Registers LangSightCrewAIEventListener on crewai_event_bus
        │       └── 19 event handlers (crew + task + agent + tool + LLM + A2A)
        │
        ├── Patches Agent.kickoff (all versions)
        │   └── Sets _agent_ctx for Anthropic/OpenAI SDK LLM attribution
        │
        ├── Patches Crew.kickoff (all versions)
        │   └── Auto-generates session_id + flushes spans after kickoff
        │
        └── Fallback: patches BaseTool.run (CrewAI < 1.5 only)

from langsight.sdk import LangSightClient
from langsight.integrations.crewai import LangSightCrewAICallback

client = LangSightClient(
    url="http://localhost:8000",
    project_id="my-project",
    redact_payloads=True,
)

callback = LangSightCrewAICallback(
    client=client,
    server_name="my-mcp-server",
    agent_name="support-agent",
)

agent = Agent(
    role="Support Agent",
    tools=[my_mcp_tool],
    callbacks=[callback],
)

import langsight
langsight.auto_patch()

from crewai import Agent, Task, Crew

crew = Crew(agents=[...], tasks=[...])

with langsight.session(session_id="q1-revenue-analysis"):
    result = crew.kickoff()