LangChain

Adds instrumentation for LangChain.

Import name: Sentry.langChainIntegration

The langChainIntegration adds instrumentation for LangChain to capture spans by automatically wrapping LangChain operations and recording AI agent interactions with configurable input/output recording.

It is enabled by default and will automatically capture spans for LangChain operations including chat models, LLM invocations, chains, and tool executions. You can opt-in to capture inputs and outputs by setting recordInputs and recordOutputs in the integration config:

Copied
Sentry.init({
  dsn: "____PUBLIC_DSN____",
  tracesSampleRate: 1.0,
  integrations: [
    Sentry.langChainIntegration({
      recordInputs: true,
      recordOutputs: true,
    }),
  ],
});

Type: boolean

Records inputs to LangChain operations (such as prompts and messages).

Defaults to true if sendDefaultPii is true.

Copied
Sentry.init({
  integrations: [Sentry.langChainIntegration({ recordInputs: true })],
});

Type: boolean

Records outputs from LangChain operations (such as generated text and responses).

Defaults to true if sendDefaultPii is true.

Copied
Sentry.init({
  integrations: [Sentry.langChainIntegration({ recordOutputs: true })],
});

By default this integration adds tracing support for LangChain operations including:

  • Chat model invocations (gen_ai.chat) - Captures spans for chat model calls
  • LLM invocations (gen_ai.pipeline) - Captures spans for LLM pipeline executions
  • Chain executions (gen_ai.invoke_agent) - Captures spans for chain invocations
  • Tool executions (gen_ai.execute_tool) - Captures spans for tool calls

The integration automatically instruments the following LangChain runnable methods:

  • invoke() - Single execution
  • stream() - Streaming execution
  • batch() - Batch execution

The automatic instrumentation supports the following LangChain provider packages:

  • @langchain/anthropic
  • @langchain/openai
  • @langchain/google-genai
  • @langchain/mistralai
  • @langchain/google-vertexai
  • @langchain/groq

  • langchain: >=0.1.0 <1.0.0
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