Code Review

Code Review

Use this skill when the task is to review code changes rather than implement a feature.

Start Here

• Read references/review-checklist.md for the repo's canonical review rules.
• Read root AGENTS.md and the nearest package AGENTS.md for the files under review.
• If the review touches ClickHouse, also use the shared clickhouse-best-practices skill.
• If the review touches backend code, also use the shared backend-dev-guidelines skill where relevant.
• If the change accepts a user-supplied URL, adds outbound HTTP, introduces a new integration, touches secrets, RBAC, redirect handling, product analytics, browser monitoring, or session replay, also use the shared security-review skill. Run its references/checklist.md before signoff.

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
• Before calling coverage missing, identify the unique regression each proposed test catches. Do not ask for one whose only assertion would restate the diff — a spacing value, a label — because it costs a file and proves nothing. Prefer merging into the closest existing suite. Flag repeated tests of the same predicate across layers unless each proves a distinct transport, projection, or execution boundary.

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
• Prisma record-not-found checks (isPrismaRecordNotFoundError / isRecordNotFoundError, not an inlined P2025 check)
• 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.