backend-dev-guidelines

Installation
SKILL.md

Backend Development Guidelines

Purpose

Establish consistency and best practices across Langfuse's backend packages (web, worker, packages/shared) using Next.js 14, tRPC, BullMQ, and TypeScript patterns.

When to Use This Skill

Automatically activates when working on:

  • Creating or modifying tRPC routers and procedures
  • Creating or modifying public API endpoints (REST)
  • Creating or modifying BullMQ queue consumers and producers
  • Building services with business logic
  • Authenticating API requests
  • Accessing resources based on entitlements
  • Implementing middleware (tRPC, NextAuth, public API)
  • Database operations with Prisma (PostgreSQL) or ClickHouse
  • Observability with OpenTelemetry, DataDog, logger, and traceException
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Installs
11
GitHub Stars
219
First Seen
Jan 22, 2026