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Title: Trace LangChain agents (Python and JS/TS) - Docs by LangChain

Open Graph Title: Trace LangChain agents (Python and JS/TS) - Docs by LangChain

X Title: Trace LangChain agents (Python and JS/TS) - Docs by LangChain

Opengraph URL: https://docs.langchain.com/langsmith/trace-with-langchain

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Domain: docs.langchain.com

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Links:

/llms.txthttps://docs.langchain.com/llms.txt
Skip to main contenthttps://docs.langchain.com/langsmith/trace-with-langchain#content-area
Get early bird pricing nowhttps://interrupt.langchain.com/
Docs by LangChain home pagehttps://docs.langchain.com/
Ask AIhttps://chat.langchain.com/
GitHubhttps://github.com/langchain-ai
Try LangSmithhttps://smith.langchain.com/
Try LangSmithhttps://smith.langchain.com/
Overviewhttps://docs.langchain.com/langsmith/observability
Tracehttps://docs.langchain.com/langsmith/observability-quickstart
Debughttps://docs.langchain.com/langsmith/view-traces
Observehttps://docs.langchain.com/langsmith/dashboards
Referencehttps://docs.langchain.com/langsmith/reference
Quickstarthttps://docs.langchain.com/langsmith/observability-quickstart
Tutorialhttps://docs.langchain.com/langsmith/observability-llm-tutorial
Conceptshttps://docs.langchain.com/langsmith/observability-concepts
Chathttps://docs.langchain.com/langsmith/chat#observability
Overviewhttps://docs.langchain.com/langsmith/integrations
AutoGenhttps://docs.langchain.com/langsmith/trace-with-autogen
Claude Agent SDKhttps://docs.langchain.com/langsmith/trace-claude-agent-sdk
Claude Managed Agentshttps://docs.langchain.com/langsmith/trace-with-claude-managed-agents
CrewAIhttps://docs.langchain.com/langsmith/trace-with-crewai
Deep Agentshttps://docs.langchain.com/langsmith/trace-deep-agents
Google ADKhttps://docs.langchain.com/langsmith/trace-with-google-adk
LangChainhttps://docs.langchain.com/langsmith/trace-with-langchain
LangGraphhttps://docs.langchain.com/langsmith/trace-with-langgraph
Mastrahttps://docs.langchain.com/langsmith/trace-with-mastra
Microsoft Agent Frameworkhttps://docs.langchain.com/langsmith/trace-with-microsoft-agent-framework
OpenAI Agents SDKhttps://docs.langchain.com/langsmith/trace-with-openai-agents-sdk
OpenTelemetryhttps://docs.langchain.com/langsmith/trace-with-opentelemetry
PydanticAIhttps://docs.langchain.com/langsmith/trace-with-pydantic-ai
Semantic Kernelhttps://docs.langchain.com/langsmith/trace-with-semantic-kernel
Strands Agentshttps://docs.langchain.com/langsmith/trace-with-strands-agents
Vercel AI SDKhttps://docs.langchain.com/langsmith/trace-with-vercel-ai-sdk
Cost trackinghttps://docs.langchain.com/langsmith/cost-tracking
Usage and billinghttps://docs.langchain.com/langsmith/usage-and-billing
Installationhttps://docs.langchain.com/langsmith/trace-with-langchain#installation
Quick starthttps://docs.langchain.com/langsmith/trace-with-langchain#quick-start
1. Configure your environmenthttps://docs.langchain.com/langsmith/trace-with-langchain#1-configure-your-environment
2. Log a tracehttps://docs.langchain.com/langsmith/trace-with-langchain#2-log-a-trace
3. View your tracehttps://docs.langchain.com/langsmith/trace-with-langchain#3-view-your-trace
Trace selectivelyhttps://docs.langchain.com/langsmith/trace-with-langchain#trace-selectively
Select an agent and environmenthttps://docs.langchain.com/langsmith/trace-with-langchain#select-an-agent-and-environment
Add metadata and tags to traceshttps://docs.langchain.com/langsmith/trace-with-langchain#add-metadata-and-tags-to-traces
Customize run namehttps://docs.langchain.com/langsmith/trace-with-langchain#customize-run-name
Override model name in traceshttps://docs.langchain.com/langsmith/trace-with-langchain#override-model-name-in-traces
Customize run IDhttps://docs.langchain.com/langsmith/trace-with-langchain#customize-run-id
Access run (span) ID for LangChain invocationshttps://docs.langchain.com/langsmith/trace-with-langchain#access-run-span-id-for-langchain-invocations
Ensure all traces are submitted before exitinghttps://docs.langchain.com/langsmith/trace-with-langchain#ensure-all-traces-are-submitted-before-exiting
Trace without setting environment variableshttps://docs.langchain.com/langsmith/trace-with-langchain#trace-without-setting-environment-variables
Distributed tracing with LangChain (Python)https://docs.langchain.com/langsmith/trace-with-langchain#distributed-tracing-with-langchain-python
Interoperability between LangChain (Python) and LangSmith SDKhttps://docs.langchain.com/langsmith/trace-with-langchain#interoperability-between-langchain-python-and-langsmith-sdk
Interoperability between LangChain.JS and LangSmith SDKhttps://docs.langchain.com/langsmith/trace-with-langchain#interoperability-between-langchain-js-and-langsmith-sdk
Tracing LangChain objects inside traceable (JS only)https://docs.langchain.com/langsmith/trace-with-langchain#tracing-langchain-objects-inside-traceable-js-only
Tracing LangChain child runs via traceable / RunTree API (JS only)https://docs.langchain.com/langsmith/trace-with-langchain#tracing-langchain-child-runs-via-traceable-%2F-runtree-api-js-only
agent-based workspacehttps://docs.langchain.com/langsmith/agent-registry
create an agenthttps://docs.langchain.com/langsmith/create-an-agent
agent addressinghttps://docs.langchain.com/langsmith/log-traces-to-agent
tracer_session_namehttps://docs.langchain.com/langsmith/create-an-agent#use-an-environment-project
​https://docs.langchain.com/langsmith/trace-with-langchain#installation
LangChain docshttps://docs.langchain.com/oss/python/integrations/providers/overview
​https://docs.langchain.com/langsmith/trace-with-langchain#quick-start
​https://docs.langchain.com/langsmith/trace-with-langchain#1-configure-your-environment
​https://docs.langchain.com/langsmith/trace-with-langchain#2-log-a-trace
​https://docs.langchain.com/langsmith/trace-with-langchain#3-view-your-trace
​https://docs.langchain.com/langsmith/trace-with-langchain#trace-selectively
previous sectionhttps://docs.langchain.com/langsmith/trace-with-langchain#quick-start
callbackhttps://reference.langchain.com/python/langchain_core/callbacks/
tracing_context context managerhttps://reference.langchain.com/python/langsmith/observability/sdk/run_helpers/#langsmith.run_helpers.tracing_context
LangChainTracerhttps://reference.langchain.com/javascript/classes/_langchain_core.tracers_tracer_langchain.LangChainTracer.html
​https://docs.langchain.com/langsmith/trace-with-langchain#select-an-agent-and-environment
Log traces to an agenthttps://docs.langchain.com/langsmith/log-traces-to-agent
tracer_session_namehttps://docs.langchain.com/langsmith/create-an-agent#use-an-environment-project
​https://docs.langchain.com/langsmith/trace-with-langchain#add-metadata-and-tags-to-traces
RunnableConfighttps://reference.langchain.com/python/langchain_core/runnables/?h=runnablecon#langchain_core.runnables.RunnableConfig
Query traces (SDK)https://docs.langchain.com/langsmith/export-traces
RunnableConfighttps://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig
​https://docs.langchain.com/langsmith/trace-with-langchain#customize-run-name
Confighttps://reference.langchain.com/python/langchain_core/runnables/?h=runnablecon#langchain_core.runnables.RunnableConfig
RunnableConfighttps://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig
ChatOpenAIhttps://reference.langchain.com/python/langchain-openai/chat_models/base/ChatOpenAI
​https://docs.langchain.com/langsmith/trace-with-langchain#override-model-name-in-traces
metadata parameterhttps://docs.langchain.com/langsmith/ls-metadata-parameters#ls_model_name
cost trackinghttps://docs.langchain.com/langsmith/cost-tracking
metadata parameters referencehttps://docs.langchain.com/langsmith/ls-metadata-parameters
​https://docs.langchain.com/langsmith/trace-with-langchain#customize-run-id
Confighttps://reference.langchain.com/python/langchain_core/runnables/?h=runnablecon#langchain_core.runnables.RunnableConfig
RunnableConfighttps://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig
​https://docs.langchain.com/langsmith/trace-with-langchain#access-run-span-id-for-langchain-invocations
​https://docs.langchain.com/langsmith/trace-with-langchain#ensure-all-traces-are-submitted-before-exiting
​https://docs.langchain.com/langsmith/trace-with-langchain#trace-without-setting-environment-variables
previous sectionhttps://docs.langchain.com/langsmith/trace-with-langchain#trace-selectively
​https://docs.langchain.com/langsmith/trace-with-langchain#distributed-tracing-with-langchain-python
distributed tracing guidehttps://docs.langchain.com/langsmith/distributed-tracing
​https://docs.langchain.com/langsmith/trace-with-langchain#interoperability-between-langchain-python-and-langsmith-sdk
Custom instrumentationhttps://docs.langchain.com/langsmith/annotate-code
​https://docs.langchain.com/langsmith/trace-with-langchain#interoperability-between-langchain-js-and-langsmith-sdk
​https://docs.langchain.com/langsmith/trace-with-langchain#tracing-langchain-objects-inside-traceable-js-only
​https://docs.langchain.com/langsmith/trace-with-langchain#tracing-langchain-child-runs-via-traceable-/-runtree-api-js-only
RunnableConfighttps://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig
RunnableConfighttps://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig
Alternative Ways to Trace videohttps://academy.langchain.com/pages/intro-to-langsmith-preview
Connect these docshttps://docs.langchain.com/use-these-docs
Edit this page on GitHubhttps://github.com/langchain-ai/docs/edit/main/src/langsmith/trace-with-langchain.mdx
file an issuehttps://github.com/langchain-ai/docs/issues/new/choose
Trace Google ADK agentsPrevioushttps://docs.langchain.com/langsmith/trace-with-google-adk
Trace LangGraph agentsNexthttps://docs.langchain.com/langsmith/trace-with-langgraph
Docs by LangChain home pagehttps://docs.langchain.com/
githubhttps://github.com/langchain-ai
xhttps://x.com/LangChain
linkedinhttps://www.linkedin.com/company/langchain
youtubehttps://www.youtube.com/@LangChain
Forumhttps://forum.langchain.com/
Changeloghttps://changelog.langchain.com/
LangChain Academyhttps://academy.langchain.com/
Contact Saleshttps://www.langchain.com/contact-sales
Homehttps://langchain.com/
Trust Centerhttps://trust.langchain.com/
Careershttps://langchain.com/careers
Bloghttps://blog.langchain.com/
githubhttps://github.com/langchain-ai
xhttps://x.com/LangChain
linkedinhttps://www.linkedin.com/company/langchain
youtubehttps://www.youtube.com/@LangChain

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