LangChain

Overview

This guide shows you how to integrate Latitude Telemetry into an application that uses LangChain.

You’ll keep calling LangChain exactly as you do today. Telemetry simply observes and enriches those calls.

Requirements

A Latitude account and API key
A Latitude project slug
A project that uses LangChain

Steps

Install

TypeScript
Python

npm install @latitude-data/telemetry

pnpm add @latitude-data/telemetry

yarn add @latitude-data/telemetry

bun add @latitude-data/telemetry

pip install latitude-telemetry

uv add latitude-telemetry

poetry add latitude-telemetry

Initialize and use

TypeScript
Python

import { Latitude, capture } from "@latitude-data/telemetry"
import { ChatOpenAI } from "@langchain/openai"
import { HumanMessage } from "@langchain/core/messages"
import * as LangChain from "langchain"

const latitude = new Latitude({
  apiKey: process.env.LATITUDE_API_KEY!,
  project: process.env.LATITUDE_PROJECT_SLUG!,
  instrumentations: { langchain: LangChain },
})


const llm = new ChatOpenAI({ modelName: "gpt-4o" })

await capture("langchain-query", async () => {
  const response = await llm.invoke([new HumanMessage("Hello")])
  return response.content
})

await latitude.shutdown()

from latitude_telemetry import Latitude, capture
import langchain_core
from langchain_openai import ChatOpenAI
from langchain_core.messages import HumanMessage

latitude = Latitude(
    api_key="your-api-key",
    project="your-project-slug",
    instrumentations={"langchain": langchain_core},
)

llm = ChatOpenAI(model="gpt-4o")

def langchain_query():
    response = llm.invoke([HumanMessage(content="Hello")])
    return response.content

capture("langchain-query", langchain_query)

latitude.shutdown()

Seeing Your Traces

Once connected, traces appear automatically in Latitude:

Open your project in the Latitude dashboard
Each execution shows input/output messages, model, token usage, latency, and errors
LangChain chain steps appear as child spans

Google ADK LlamaIndex

⌘I

Overview

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Overview

Requirements

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Seeing Your Traces

​Overview

​Requirements

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​Seeing Your Traces

Overview

Requirements

Steps

Seeing Your Traces