Langfuse Local Dev Loop

Overview

Set up a fast, iterative local development workflow with Langfuse tracing and debugging.

Prerequisites

• Completed langfuse-install-auth setup
• Node.js 18+ or Python 3.9+
• Docker (optional, for self-hosted local instance)
• IDE with TypeScript/Python support

Instructions

Step 1: Configure Development Environment

Create a .env.local file for development-specific settings:

# .env.local
LANGFUSE_PUBLIC_KEY=pk-lf-dev-...