Comprehensive backend development guide for Langfuse's Next.js 14/tRPC/Express/TypeScript monorepo. Use when creating tRPC routers, public API endpoints, BullMQ queue processors, services, or working with tRPC procedures, Next.js API routes, Prisma database access, ClickHouse analytics queries, Redis queues, OpenTelemetry instrumentation, Zod v4 validation, env.mjs configuration, tenant…
Install
npx skills add langfuse/langfuse --skill backend-dev-guidelinesnpx skills add langfuse/langfuse --skill backend-dev-guidelines -a claude-code -gnpx skills add langfuse/langfuse --skill backend-dev-guidelines -a codex -ggemini skills install https://github.com/langfuse/langfuse.git --path .claude/skills/backend-dev-guidelinesgh skill install langfuse/langfuse backend-dev-guidelinesgit clone --depth 1 https://github.com/langfuse/langfuse /tmp/langfuse__langfuse
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/langfuse__langfuse/.claude/skills/backend-dev-guidelines ~/.claude/skills/backend-dev-guidelines # Claude Code
cp -R /tmp/langfuse__langfuse/.claude/skills/backend-dev-guidelines ~/.agents/skills/backend-dev-guidelines # Codex, Cursor, Gemini CLI, Copilot, OpenCode