Agent skill
code-review
Shared code review workflow for Langfuse. Use when reviewing a PR, branch, diff, or local changes for correctness, regressions, risk, and missing tests. Start with references/review-checklist.md for repo-specific review rules and use package AGENTS.md files plus any matching shared skills when the change touches those areas.
Install this agent skill to your Project
npx add-skill https://github.com/langfuse/langfuse/tree/main/.agents/skills/code-review
SKILL.md
Code Review
Use this skill when the task is to review code changes rather than implement a feature.
Start Here
- Read
references/review-checklist.mdfor the repo's canonical review rules. - Read root
AGENTS.mdand the nearest packageAGENTS.mdfor the files under review. - If the review touches ClickHouse, also use the shared
clickhouse-best-practicesskill. - If the review touches backend code, also use the shared
backend-dev-guidelinesskill where relevant.
Review Priorities
Focus on:
- correctness bugs
- behavioral regressions
- security and tenant-isolation risks
- performance issues with real impact
- missing or weak tests for risky changes
Output Expectations
- Findings first, ordered by severity
- File and line references for each finding
- Short summary only after findings
- If no findings, say so explicitly and mention any residual risk or coverage gaps
Scope Guidance
Use references/review-checklist.md for Langfuse-specific checks such as:
- ClickHouse and Postgres migration expectations
- project-scoped tenant isolation checks
- API/Fern consistency
- banner-offset UI positioning
- environment variable access patterns
Do not duplicate those rules in ad hoc prompts or tool-specific command files.
Recommended Agent Skills
Expand your agent's capabilities with these related and highly-rated skills.
frontend-browser-review
Shared workflow for browser-based review of user-visible frontend changes in Langfuse. Use when a change affects UI behavior, layout, styling, navigation, or browser-visible regressions and should be checked with the Playwright MCP server before signoff.
changelog-writing
Shared workflow for writing Langfuse changelog entries after a feature is complete. Use when a branch is ready for merge and a changelog entry or changelog draft is needed.
add-model-price
Use when editing worker/src/constants/default-model-prices.json, packages/shared/src/server/llm/types.ts, pricing tiers, tokenizer IDs, or matchPattern regexes for OpenAI, Anthropic, Bedrock, Vertex, Azure, or Gemini model pricing.
turborepo
Turborepo monorepo build system guidance. Triggers on: turbo.json, task pipelines, dependsOn, caching, remote cache, the "turbo" CLI, --filter, --affected, CI optimization, environment variables, internal packages, monorepo structure/best practices, and boundaries. Use when user: configures tasks/workflows/pipelines, creates packages, sets up monorepo, shares code between apps, runs changed/affected packages, debugs cache, or has apps/packages directories.
agent-setup-maintenance
Shared workflow for editing Langfuse's repo-owned agent setup under `.agents/`. Use when changing AGENTS files, shared skills, `.agents/config.json`, generated shim behavior, provider discovery paths, or install-time agent sync.
backend-dev-guidelines
Shared backend guide for Langfuse's Next.js 14, tRPC, BullMQ, and TypeScript monorepo. Use when creating or reviewing tRPC routers, public REST endpoints, BullMQ queue processors, backend services, middleware, Prisma or ClickHouse data access, OpenTelemetry instrumentation, Zod validation, env configuration, or backend tests across web, worker, or packages/shared.
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