---
name: "Trace and evaluate LLM application behavior with Langtrace"
slug: "trace-and-evaluate-llm-application-behavior-with-langtrace"
description: "Instrument Python or TypeScript agent applications with OpenTelemetry traces, metrics, and evaluation views for debugging production LLM workflows."
github_stars: 1207
verification: "security_reviewed"
source: "https://github.com/Scale3-Labs/langtrace"
author: "Scale3 Labs"
publisher_type: "organization"
category: "Monitoring & Alerts"
framework: "Multi-Framework"
tool_ecosystem:
  github_repo: "Scale3-Labs/langtrace"
  github_stars: 1207
  npm_package: "@langtrase/typescript-sdk"
  npm_weekly_downloads: 1100
---

# Trace and evaluate LLM application behavior with Langtrace

Instrument Python or TypeScript agent applications with OpenTelemetry traces, metrics, and evaluation views for debugging production LLM workflows.

## Prerequisites

Python or Node.js runtime, Langtrace API key or self-hosted Langtrace instance

## Installation

Requirements and caveats from upstream:
- [![PyPI SDK](https://img.shields.io/pypi/v/langtrace-python-sdk?style=flat-square&logo=python&label=python-sdk&color=green)](https://github.com/Scale3-Labs/langtrace-python-sdk)
- [![PyPI Downloads](https://static.pepy.tech/badge/langtrace-python-sdk/month)](https://pepy.tech/project/langtrace-python-sdk)
- [![Total PyPI Downloads](https://static.pepy.tech/badge/langtrace-python-sdk)](https://static.pepy.tech/badge/langtrace-python-sdk)

- Source: https://github.com/Scale3-Labs/langtrace
- Extracted from upstream docs: https://raw.githubusercontent.com/Scale3-Labs/langtrace/HEAD/README.md

## Documentation

- https://github.com/Scale3-Labs/langtrace

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/trace-and-evaluate-llm-application-behavior-with-langtrace/)