feat(core): Instrument LangGraph Agent #18114
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nicohrubec
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Nov 13, 2025
dev-packages/node-integration-tests/suites/tracing/langgraph/scenario-tools.mjs
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nicohrubec
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| export function extractTokenUsageFromMetadata(span: Span, message: LangChainMessage): void { | ||
| const msg = message as Record<string, unknown>; | ||
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| // Extract from usage_metadata (newer format) |
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l: Sure, though I think it would be good then to put that detail in the comment or maybe a link where that is explained (if you have one) so that it is more clear
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#18112) This PR adds manual instrumentation support for LangGraph StateGraph operations in Cloudflare Workers and Vercel Edge environments. ``` import * as Sentry from '@sentry/cloudflare'; // or '@sentry/vercel-edge' import { StateGraph, START, END, MessagesAnnotation } from '@langchain/langgraph'; // Create and instrument the graph const graph = new StateGraph(MessagesAnnotation) .addNode('agent', agentFn) .addEdge(START, 'agent') .addEdge('agent', END); Sentry.instrumentLangGraph(graph, { recordInputs: true, recordOutputs: true, }); const compiled = graph.compile({ name: 'weather_assistant' }); await compiled.invoke({ messages: [{ role: 'user', content: 'What is the weather in SF?' }], }); ``` - [x] This PR depends on #18114
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This PR adds official support for instrumenting LangGraph StateGraph operations in Node with Sentry tracing, following OpenTelemetry semantic conventions for Generative AI.
Currently supported:
Node.js - Both agent creation and invocation are instrumented in this PR
ESM and CJS - Both module systems are supported
The langGraphIntegration() accepts the following options:
e.g
Operations traced: